Web Security Overview
Supported and well configured
HTTPS

Web sites need to use encryption to help their visitors know they're in the right place, as well as provide confidentiality and content integrity. Sites that don't support HTTPS may expose sensitive data and have their pages modified and subverted.

For all sites VERY IMPORTANT medium EFFORT
Supported and well configured
HTTPS Redirection

To deploy HTTPS properly, web sites must redirect all unsafe (plaintext) traffic to the encrypted variant. This approach ensures that no sensitive data is exposed and that further security technologies can be activated.

For all sites VERY IMPORTANT low EFFORT
Supported and well configured
HTTP Strict Transport Security

HTTP Strict Transport Security (HSTS) is an HTTPS extension that instructs browsers to remember sites that use encryption and enforce strict security requirements. Without HSTS, active network attacks are easy to carry out.

For important sites VERY IMPORTANT medium EFFORT
Supported and well configured
HSTS Preloaded

HSTS Preloading is informing browsers in advance about a site's use of HSTS, which means that strict security can be enforced even on the first visit. This approach provides best HTTPS security available today.

For important sites VERY IMPORTANT medium EFFORT
Supported and well configured
Content Security Policy

Content Security Policy (CSP) is an additional security layer that enables web sites to control browser behavior, creating a safety net that can counter attacks such as cross-site scripting.

For important sites IMPORTANT high EFFORT
Email Security Overview
Supported and well configured
STARTTLS

All hosts that receive email need encryption to ensure confidentiality of email messages. Email servers thus need to support STARTTLS, as well as provide decent TLS configuration and correct certificates.

For all sites VERY IMPORTANT low EFFORT
Supported and well configured
SPF

Sender Policy Framework (SPF) enables organizations to designate servers that are allowed to send email messages on their behalf. With SPF in place, spam is easier to identify.

For important sites IMPORTANT low EFFORT
Supported and well configured
DMARC

Domain-based Message Authentication, Reporting, and Conformance (DMARC) is a mechanism that allows organizations to specify how unauthenticated email (identified using SPF and DKIM) should be handled.

For important sites IMPORTANT low EFFORT

DNS Zone

The global DNS infrastructure is organized as a series of hierarchical DNS zones. The root zone hosts a number of global and country TLDs, which in turn host further zones that are delegated to their customers. Each organization that controls a zone can delegate parts of its namespace to other zones. In this test we perform detailed inspection of a DNS zone, but only if the host being tested matches the zone.

Test passed
Everything seems to be well configured. Well done.

Nameserver Names

Nameservers can be referred to by name and by address. In this section we show the names, which can appear in the NS records, the referrals from the parent zone, and the SOA record. In some situations, servers from the parent zone respond authoritatively, in which case we will include them in the list as well.

Nameserver Operational IPv4 IPv6 Sources
chris.ns.cloudflare.com. PRIMARY
108.162.193.85
172.64.33.85
173.245.59.85
2606:4700:58::adf5:3b55
2803:f800:50::6ca2:c155
2a06:98c1:50::ac40:2155
The server is online. Name resolves to an IPv4 address. Name resolves to an IPv6 address. REFERRAL NS SOA
serena.ns.cloudflare.com.
108.162.192.220
172.64.32.220
173.245.58.220
2606:4700:50::adf5:3adc
2803:f800:50::6ca2:c0dc
2a06:98c1:50::ac40:20dc
The server is online. Name resolves to an IPv4 address. Name resolves to an IPv6 address. REFERRAL NS

Nameserver Addresses

This section shows the configuration of all discovered nameservers by their IP address. To find all applicable nameservers, we inspect the parent zone nameservers for names and glue and then the tested zone nameservers for NS records. We then resolve all discovered names to IP addresses. Finally, we test each address individually.

Nameserver Operational Authoritative Recursive UDP TCP Sources Payload Size
108.162.192.220
serena.ns.cloudflare.com.
PTR: serena.ns.cloudflare.com.
The server appears to be online. Nameserver provides authoritative responses Nameserver doesn't provide recursive service Nameserver responds to UDP queries Nameserver responds to TCP queries NAME 1232
108.162.193.85 PRIMARY
chris.ns.cloudflare.com.
PTR: chris.ns.cloudflare.com.
The server appears to be online. Nameserver provides authoritative responses Nameserver doesn't provide recursive service Nameserver responds to UDP queries Nameserver responds to TCP queries NAME 1232
172.64.32.220
serena.ns.cloudflare.com.
PTR: serena.ns.cloudflare.com.
The server appears to be online. Nameserver provides authoritative responses Nameserver doesn't provide recursive service Nameserver responds to UDP queries Nameserver responds to TCP queries NAME 1232
172.64.33.85 PRIMARY
chris.ns.cloudflare.com.
PTR: chris.ns.cloudflare.com.
The server appears to be online. Nameserver provides authoritative responses Nameserver doesn't provide recursive service Nameserver responds to UDP queries Nameserver responds to TCP queries NAME 1232
173.245.58.220
serena.ns.cloudflare.com.
PTR: serena.ns.cloudflare.com.
The server appears to be online. Nameserver provides authoritative responses Nameserver doesn't provide recursive service Nameserver responds to UDP queries Nameserver responds to TCP queries NAME 1232
173.245.59.85 PRIMARY
chris.ns.cloudflare.com.
PTR: chris.ns.cloudflare.com.
The server appears to be online. Nameserver provides authoritative responses Nameserver doesn't provide recursive service Nameserver responds to UDP queries Nameserver responds to TCP queries NAME 1232
2606:4700:50::adf5:3adc
serena.ns.cloudflare.com.
PTR: serena.ns.cloudflare.com.
The server appears to be online. Nameserver provides authoritative responses Nameserver doesn't provide recursive service Nameserver responds to UDP queries Nameserver responds to TCP queries NAME 1232
2606:4700:58::adf5:3b55 PRIMARY
chris.ns.cloudflare.com.
PTR: chris.ns.cloudflare.com.
The server appears to be online. Nameserver provides authoritative responses Nameserver doesn't provide recursive service Nameserver responds to UDP queries Nameserver responds to TCP queries NAME 1232
2803:f800:50::6ca2:c0dc
serena.ns.cloudflare.com.
PTR: serena.ns.cloudflare.com.
The server appears to be online. Nameserver provides authoritative responses Nameserver doesn't provide recursive service Nameserver responds to UDP queries Nameserver responds to TCP queries NAME 1232
2803:f800:50::6ca2:c155 PRIMARY
chris.ns.cloudflare.com.
PTR: chris.ns.cloudflare.com.
The server appears to be online. Nameserver provides authoritative responses Nameserver doesn't provide recursive service Nameserver responds to UDP queries Nameserver responds to TCP queries NAME 1232
2a06:98c1:50::ac40:20dc
serena.ns.cloudflare.com.
PTR: serena.ns.cloudflare.com.
The server appears to be online. Nameserver provides authoritative responses Nameserver doesn't provide recursive service Nameserver responds to UDP queries Nameserver responds to TCP queries NAME 1232
2a06:98c1:50::ac40:2155 PRIMARY
chris.ns.cloudflare.com.
PTR: chris.ns.cloudflare.com.
The server appears to be online. Nameserver provides authoritative responses Nameserver doesn't provide recursive service Nameserver responds to UDP queries Nameserver responds to TCP queries NAME 1232

Start of Authority (SOA) Record

Start of Authority (SOA) records contain administrative information pertaining to one DNS zone, especially the configuration that's used for zone transfers between the primary nameserver and the secondaries. Only one SOA record should exist, with all nameservers providing the same information.

The domain name of the primary nameserver for the zone. Also known as MNAME.Primary nameserver chris.ns.cloudflare.com.
Email address of the persons responsible for this zone. Also known as RNAME.Admin email dns.cloudflare.com.
Zone serial or version number.Serial number -2026869330
The length of time secondary nameservers should wait before querying the primary for changes.Refresh interval 10,000 seconds (about 2 hours 46 minutes)
The length of time secondary nameservers should wait before querying an unresponsive primary again.Retry interval 2,400 seconds (about 40 minutes)
The length of time after which secondary nameservers should stop responding to queries for a zone, assuming no updates were obtained from the primary.Expire interval 604,800 seconds (about 7 days)
TTL for purposes of negative response caching. Negative cache TTL 3,600 seconds (about 1 hour)
Time To Live (TTL) indicates for how long a record remains valid. SOA record TTL 3,600 seconds (about 1 hour)

Analysis

Good
No problems detected with the zone configuration
Excellent. This DNS zone is in a good working order. No problems detected.

Backing DNS Queries

Below are all DNS queries we submitted during the zone inspection.

ID Server Transport Question Name Type Status

DNS Records

Correctly functioning name servers are necessary to hold and distribute information that's necessary for your domain name to operate correctly. Examples include converting names to IP addresses, determining where email should go, and so on. More recently, the DNS is being used to communicate email and other security policies.

Test passed
Everything seems to be well configured. Well done.

DNS Records

These are the results of individual DNS queries against your nameserver for common resource record types.

Name TTL Type Data
smartfixmarburg.de.     300 A 172.67.212.140            
smartfixmarburg.de.     300 A 104.21.85.243            
www.smartfixmarburg.de.     300 A 172.67.212.140            
www.smartfixmarburg.de.     300 A 104.21.85.243            
smartfixmarburg.de.     300 AAAA 2606:4700:3035:0:0:0:6815:55f3            
smartfixmarburg.de.     300 AAAA 2606:4700:3030:0:0:0:ac43:d48c            
www.smartfixmarburg.de.     300 AAAA 2606:4700:3030:0:0:0:ac43:d48c            
www.smartfixmarburg.de.     300 AAAA 2606:4700:3035:0:0:0:6815:55f3            
smartfixmarburg.de.     3600 DNSKEY 257 3 13 mdsswUyr3DPW132mOi8V9xESWE8jTo0dxCjjnopKl+GqJxpVXckHAeF+KkxLbxILfDLUT0rAK9iUzy1L53eKGQ==            
smartfixmarburg.de.     3600 DNSKEY 256 3 13 oJMRESz5E4gYzS/q6XDrvU1qMPYIjCWzJaOau8XNEZeqCYKD5ar0IRd8KqXXFJkqmVfRvMGPmM1x8fGAa2XhSA==            
smartfixmarburg.de.     300 HTTPS 1 . alpn=h3,h3-29,h2 ipv4hint=104.21.85.243,172.67.212.140 ipv6hint=2606:4700:3030:0:0:0:ac43:d48c,2606:4700:3035:0:0:0:6815:55f3            
www.smartfixmarburg.de.     300 HTTPS 1 . alpn=h3,h3-29,h2 ipv4hint=104.21.85.243,172.67.212.140 ipv6hint=2606:4700:3030:0:0:0:ac43:d48c,2606:4700:3035:0:0:0:6815:55f3            
smartfixmarburg.de.     300 MX 20 mxext3.mailbox.org.            
smartfixmarburg.de.     300 MX 0 mxext1.mailbox.org.            
smartfixmarburg.de.     300 MX 10 mxext2.mailbox.org.            
smartfixmarburg.de.     86400 NS chris.ns.cloudflare.com.            
smartfixmarburg.de.     86400 NS serena.ns.cloudflare.com.            
smartfixmarburg.de.     3600 SOA chris.ns.cloudflare.com. dns.cloudflare.com. 2268097966 10000 2400 604800 3600            
smartfixmarburg.de.     300 TXT "v=spf1 include:mailbox.org include:_spf.smtp.com ~all"            
_dmarc.smartfixmarburg.de.     300 TXT "v=DMARC1; p=reject; pct=100; rua=mailto:re+udpvhnfoskd@dmarc.postmarkapp.com;"            

Backing DNS Queries

Below are all DNS queries we submitted while we inspecting the resource records.

ID Server Question Name Type Status

DNSSEC

DNSSEC is an extension of the DNS protocol that provides cryptographic assurance of the authenticity and integrity of responses; it's intended as a defense against network attackers who are able to manipulate DNS to redirect their victims to servers of their choice. DNSSEC is controversial, with the industry split largely between those who think it's essential and those who believe that it's problematic and unnecessary.

Test passed
Everything seems to be well configured. Well done.

Analysis

Good
DNSSEC is well configured
Good. This domain name has well-configured DNSSEC.

Useful DNSSEC Tools

Certification Authority Authorization

CAA (RFC 8659) is a new standard that allows domain name owners to restrict which CAs are allowed to issue certificates for their domains. This can help to reduce the chance of misissuance, either accidentally or maliciously. In September 2017, CAA became mandatory for CAs to implement.

Feature not applicable, not implemented, or disabled
Your server doesn't support this feature.

Analysis

Powerup!
There is no CAA policy on this hostname
CAA policies can be used to restrict which CAs are allowed to issue certificates for a hostname. As such, CAA can be used to enforce an organization-wide policy and to prevent issuance of unauthorized certificates. The CA/Browser forum requires CAs to consult CAA configuration during certificate issuance from September 2017.

Email (SMTP)

An internet hostname can be served by zero or more mail servers, as specified by MX (mail exchange) DNS resource records. Each server can further resolve to multiple IP addresses, for example to handle IPv4 and IPv6 clients. Thus, in practice, hosts that wish to receive email reliably are supported by many endpoint.

Test passed
Everything seems to be well configured. Well done.
Some TLS and PKI information shown may have been retrieved from cache. The notes provide more information.
Server Preference Operational STARTTLS TLS PKI DNSSEC DANE
mxext1.mailbox.org
2001:67c:2050:104:0:1:25:1
PTR: mx1.mailbox.org
0
220 mx1.mailbox.org ESMTP Postfix

EHLO outbound.hardenize.com
250-mx1.mailbox.org
250-PIPELINING
250-SIZE 143699726
250-ETRN
250-STARTTLS
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 CHUNKING

STARTTLS
220 2.0.0 Ready to start TLS
Supports STARTTLS.
mxext1.mailbox.org
80.241.60.212
PTR: mx1.mailbox.org
0
220 mx1.mailbox.org ESMTP Postfix

EHLO outbound.hardenize.com
250-mx1.mailbox.org
250-PIPELINING
250-SIZE 143699726
250-ETRN
250-STARTTLS
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 CHUNKING

STARTTLS
220 2.0.0 Ready to start TLS
Supports STARTTLS.
mxext2.mailbox.org
2001:67c:2050:104:0:2:25:1
PTR: mx2.mailbox.org
10
220 mx2.mailbox.org ESMTP Postfix

EHLO outbound.hardenize.com
250-mx2.mailbox.org
250-PIPELINING
250-SIZE 143699726
250-ETRN
250-STARTTLS
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 CHUNKING

STARTTLS
220 2.0.0 Ready to start TLS
Supports STARTTLS.
mxext2.mailbox.org
80.241.60.215
PTR: mx2.mailbox.org
10
220 mx2.mailbox.org ESMTP Postfix

EHLO outbound.hardenize.com
250-mx2.mailbox.org
250-PIPELINING
250-SIZE 143699726
250-ETRN
250-STARTTLS
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 CHUNKING

STARTTLS
220 2.0.0 Ready to start TLS
Supports STARTTLS.
mxext3.mailbox.org
2001:67c:2050:104:0:3:25:1
PTR: mx3.mailbox.org
20
220 mx3.mailbox.org ESMTP Postfix

EHLO outbound.hardenize.com
250-mx3.mailbox.org
250-PIPELINING
250-SIZE 143699726
250-ETRN
250-STARTTLS
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 CHUNKING

STARTTLS
220 2.0.0 Ready to start TLS
Supports STARTTLS.
mxext3.mailbox.org
80.241.60.216
PTR: mx3.mailbox.org
20
220 mx3.mailbox.org ESMTP Postfix

EHLO outbound.hardenize.com
250-mx3.mailbox.org
250-PIPELINING
250-SIZE 143699726
250-ETRN
250-STARTTLS
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 CHUNKING

STARTTLS
220 2.0.0 Ready to start TLS
Supports STARTTLS.

Analysis

Notice
Some SMTP server assessments have been retrieved from cache
Some SMTP server assessment results have been retrieved from our cache. Because many hosts point to the same SMTP servers, we use a short-term cache to avoid testing the same SMTP servers over and over again.

Latest cache timestamp: 20 Jan 2022 13:00 UTC

Earliest cache timestamp: 18 Jan 2022 10:46 UTC

Email TLS (SMTP)

Transport Layer Security (TLS) is the most widely used encryption protocol on the Internet. In combination with valid certificates, servers can establish trusted communication channels even with users who have never visited them before. Network attackers can't uncover what is being communicated, even when they can see all the traffic.

Test passed
Everything seems to be well configured. Well done.
Some TLS and PKI information shown may have been retrieved from cache. The notes provide more information.

TLS Configuration: mxext1.mailbox.org (2001:67c:2050:104:0:1:25:1) Cached

Encryption protocol version determines what features are
available for negotiation between client and server.
Supported protocols
TLS v1.3
TLS v1.2
TLS v1.1
TLS v1.0
Servers should always enforce their own cipher
suite preference, as that is the only approach
that guarantees that the best possible suite is
selected.
Server suite preference
Shows cipher suite configuration for this protocol version.TLS v1.3
Server preference
Suite: TLS_AES_256_GCM_SHA384
Suite ID: 0x1302
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: secp384r1
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA384
TLS_AES_256_GCM_SHA384
 256 bits (ECDHE 384 bits)
Suite: TLS_CHACHA20_POLY1305_SHA256
Suite ID: 0x1303
Cipher name: CHACHA20
Cipher strength: 256 bits
Cipher mode: AEAD
Key exchange: secp384r1
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_CHACHA20_POLY1305_SHA256
 256 bits (ECDHE 384 bits)
Suite: TLS_AES_128_GCM_SHA256
Suite ID: 0x1301
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: secp384r1
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_AES_128_GCM_SHA256
 128 bits (ECDHE 384 bits)
Shows cipher suite configuration for this protocol version.TLS v1.2
Server preference
Suite: TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
Suite ID: 0xcca8
Cipher name: CHACHA20
Cipher strength: 256 bits
Cipher mode: AEAD
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
 256 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256
Suite ID: 0xccaa
Cipher name: CHACHA20
Cipher strength: 256 bits
Cipher mode: AEAD
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA256
TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256
 256 bits (DHE 4096 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
Suite ID: 0xc030
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA384
TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
 256 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_AES_256_GCM_SHA384
Suite ID: 0x9f
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA384
TLS_DHE_RSA_WITH_AES_256_GCM_SHA384
 256 bits (DHE 4096 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
Suite ID: 0xc02f
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
 128 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_AES_128_GCM_SHA256
Suite ID: 0x9e
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA256
TLS_DHE_RSA_WITH_AES_128_GCM_SHA256
 128 bits (DHE 4096 bits)
Suite: TLS_RSA_WITH_AES_256_GCM_SHA384
Suite ID: 0x9d
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA384
TLS_RSA_WITH_AES_256_GCM_SHA384
 256 bits
Suite: TLS_RSA_WITH_AES_128_CBC_SHA256
Suite ID: 0x3c
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_128_CBC_SHA256
 128 bits
Suite: TLS_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0x35
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA
TLS_RSA_WITH_AES_256_CBC_SHA
 256 bits
Suite: TLS_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0x2f
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA
TLS_RSA_WITH_AES_128_CBC_SHA
 128 bits
Suite: TLS_DHE_RSA_WITH_AES_256_CCM_8
Suite ID: 0xc0a3
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA256
TLS_DHE_RSA_WITH_AES_256_CCM_8
 256 bits (DHE 4096 bits)
Suite: TLS_DHE_RSA_WITH_AES_256_CCM
Suite ID: 0xc09f
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA256
TLS_DHE_RSA_WITH_AES_256_CCM
 256 bits (DHE 4096 bits)
Suite: TLS_DHE_RSA_WITH_AES_128_CCM_8
Suite ID: 0xc0a2
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA256
TLS_DHE_RSA_WITH_AES_128_CCM_8
 128 bits (DHE 4096 bits)
Suite: TLS_DHE_RSA_WITH_AES_128_CCM
Suite ID: 0xc09e
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA256
TLS_DHE_RSA_WITH_AES_128_CCM
 128 bits (DHE 4096 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
Suite ID: 0xc028
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA384
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
 256 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_AES_256_CBC_SHA256
Suite ID: 0x6b
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA256
TLS_DHE_RSA_WITH_AES_256_CBC_SHA256
 256 bits (DHE 4096 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256
Suite ID: 0xc027
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256
 128 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_AES_128_CBC_SHA256
Suite ID: 0x67
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA256
TLS_DHE_RSA_WITH_AES_128_CBC_SHA256
 128 bits (DHE 4096 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0xc014
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
 256 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0x39
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA
TLS_DHE_RSA_WITH_AES_256_CBC_SHA
 256 bits (DHE 4096 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0xc013
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
 128 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0x33
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA
TLS_DHE_RSA_WITH_AES_128_CBC_SHA
 128 bits (DHE 4096 bits)
Suite: TLS_RSA_WITH_AES_256_CCM_8
Suite ID: 0xc0a1
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_256_CCM_8
 256 bits
Suite: TLS_RSA_WITH_AES_256_CCM
Suite ID: 0xc09d
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_256_CCM
 256 bits
Suite: TLS_RSA_WITH_AES_128_GCM_SHA256
Suite ID: 0x9c
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_128_GCM_SHA256
 128 bits
Suite: TLS_RSA_WITH_AES_128_CCM_8
Suite ID: 0xc0a0
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_128_CCM_8
 128 bits
Suite: TLS_RSA_WITH_AES_128_CCM
Suite ID: 0xc09c
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_128_CCM
 128 bits
Suite: TLS_RSA_WITH_AES_256_CBC_SHA256
Suite ID: 0x3d
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_256_CBC_SHA256
 256 bits
Shows cipher suite configuration for this protocol version.TLS v1.1
Server preference
Suite: TLS_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0x35
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA
TLS_RSA_WITH_AES_256_CBC_SHA
 256 bits
Suite: TLS_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0x2f
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA
TLS_RSA_WITH_AES_128_CBC_SHA
 128 bits
Suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0xc014
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
 256 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0x39
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA
TLS_DHE_RSA_WITH_AES_256_CBC_SHA
 256 bits (DHE 4096 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0xc013
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
 128 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0x33
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA
TLS_DHE_RSA_WITH_AES_128_CBC_SHA
 128 bits (DHE 4096 bits)
Shows cipher suite configuration for this protocol version.TLS v1.0
Server preference
Suite: TLS_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0x35
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA
TLS_RSA_WITH_AES_256_CBC_SHA
 256 bits
Suite: TLS_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0x2f
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA
TLS_RSA_WITH_AES_128_CBC_SHA
 128 bits
Suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0xc014
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
 256 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0x39
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA
TLS_DHE_RSA_WITH_AES_256_CBC_SHA
 256 bits (DHE 4096 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0xc013
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
 128 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0x33
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA
TLS_DHE_RSA_WITH_AES_128_CBC_SHA
 128 bits (DHE 4096 bits)
These results have been retrieved from
our cache. This row indicates when was
that the original test ran.
Retrieved from cache
20 Jan 2022 11:58 UTC

Analysis

Notice
Deprecated TLS 1.0 protocol supported
TLS 1.0 is a weak older protocol that should be phased out. Sites that aim at a wide audience might still need to support TLS 1.0 for the time being, because many older clients don't support newer protocol versions. Sites with a modern user base might be able to disable TLS 1.0 even now. We recommend that you enable logging of encryption parameters, after which you can examine your protocol usage and make decisions with confidence.
Good
TLS 1.2 supported
Good. This server supports TLS 1.2, which can provide strong security when configured correctly. This version of the TLS protocol is necessary to provide good security with a wide range of clients that don't yet support TLS 1.3.
Good
Server enforces cipher suite preferences
Excellent. This server enforces server cipher suite preference, which means that it is able to select the best suite from the options submitted by clients. Combined with a well designed list of supported cipher suites, this settings enables negotiation of best security.
Good
Strong key exchange detected
Excellent. All cipher suites on this server rely on strong key exchange. The sweet spot is 2048 bits for DHE and 256 bits for ECDHE. Putting ECDHE suites first guarantees best security and best performance.
Good
Server prefers forward secrecy and authenticated encryption suites
Excellent. Not only does this server enforce its server preference, but it also has at the top of the list suites that support both forward secrecy and authenticated encryption. This is the best TLS 1.2 can offer.
Notice
Relaxed TLS assessment criteria applied to SMTP on port 25
We apply relaxed assessment criteria when evaluating TLS configuration of SMTP servers on port 25. This is because most delivery agents fall back to delivering via plaintext on failure to negotiate encryption. Some configuration elements that can be abused to attack other ports and protocols (e.g., SSLv2 and export cipher suites) are penalized in the same way as for other protocols. We will review this policy in the future.
Good
DHE server parameter not reused
This server does not reuse the private value used for the Diffie-Hellman key exchange.

TLS Configuration: mxext1.mailbox.org (80.241.60.212) Cached

Encryption protocol version determines what features are
available for negotiation between client and server.
Supported protocols
TLS v1.3
TLS v1.2
TLS v1.1
TLS v1.0
Servers should always enforce their own cipher
suite preference, as that is the only approach
that guarantees that the best possible suite is
selected.
Server suite preference
Shows cipher suite configuration for this protocol version.TLS v1.3
Server preference
Suite: TLS_AES_256_GCM_SHA384
Suite ID: 0x1302
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: secp384r1
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA384
TLS_AES_256_GCM_SHA384
 256 bits (ECDHE 384 bits)
Suite: TLS_CHACHA20_POLY1305_SHA256
Suite ID: 0x1303
Cipher name: CHACHA20
Cipher strength: 256 bits
Cipher mode: AEAD
Key exchange: secp384r1
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_CHACHA20_POLY1305_SHA256
 256 bits (ECDHE 384 bits)
Suite: TLS_AES_128_GCM_SHA256
Suite ID: 0x1301
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: secp384r1
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_AES_128_GCM_SHA256
 128 bits (ECDHE 384 bits)
Shows cipher suite configuration for this protocol version.TLS v1.2
Server preference
Suite: TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
Suite ID: 0xcca8
Cipher name: CHACHA20
Cipher strength: 256 bits
Cipher mode: AEAD
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
 256 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256
Suite ID: 0xccaa
Cipher name: CHACHA20
Cipher strength: 256 bits
Cipher mode: AEAD
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA256
TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256
 256 bits (DHE 4096 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
Suite ID: 0xc030
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA384
TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
 256 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_AES_256_GCM_SHA384
Suite ID: 0x9f
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA384
TLS_DHE_RSA_WITH_AES_256_GCM_SHA384
 256 bits (DHE 4096 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
Suite ID: 0xc02f
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
 128 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_AES_128_GCM_SHA256
Suite ID: 0x9e
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA256
TLS_DHE_RSA_WITH_AES_128_GCM_SHA256
 128 bits (DHE 4096 bits)
Suite: TLS_RSA_WITH_AES_256_GCM_SHA384
Suite ID: 0x9d
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA384
TLS_RSA_WITH_AES_256_GCM_SHA384
 256 bits
Suite: TLS_RSA_WITH_AES_128_CBC_SHA256
Suite ID: 0x3c
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_128_CBC_SHA256
 128 bits
Suite: TLS_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0x35
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA
TLS_RSA_WITH_AES_256_CBC_SHA
 256 bits
Suite: TLS_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0x2f
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA
TLS_RSA_WITH_AES_128_CBC_SHA
 128 bits
Suite: TLS_DHE_RSA_WITH_AES_256_CCM_8
Suite ID: 0xc0a3
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA256
TLS_DHE_RSA_WITH_AES_256_CCM_8
 256 bits (DHE 4096 bits)
Suite: TLS_DHE_RSA_WITH_AES_256_CCM
Suite ID: 0xc09f
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA256
TLS_DHE_RSA_WITH_AES_256_CCM
 256 bits (DHE 4096 bits)
Suite: TLS_DHE_RSA_WITH_AES_128_CCM_8
Suite ID: 0xc0a2
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA256
TLS_DHE_RSA_WITH_AES_128_CCM_8
 128 bits (DHE 4096 bits)
Suite: TLS_DHE_RSA_WITH_AES_128_CCM
Suite ID: 0xc09e
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA256
TLS_DHE_RSA_WITH_AES_128_CCM
 128 bits (DHE 4096 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
Suite ID: 0xc028
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA384
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
 256 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_AES_256_CBC_SHA256
Suite ID: 0x6b
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA256
TLS_DHE_RSA_WITH_AES_256_CBC_SHA256
 256 bits (DHE 4096 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256
Suite ID: 0xc027
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256
 128 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_AES_128_CBC_SHA256
Suite ID: 0x67
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA256
TLS_DHE_RSA_WITH_AES_128_CBC_SHA256
 128 bits (DHE 4096 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0xc014
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
 256 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0x39
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA
TLS_DHE_RSA_WITH_AES_256_CBC_SHA
 256 bits (DHE 4096 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0xc013
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
 128 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0x33
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA
TLS_DHE_RSA_WITH_AES_128_CBC_SHA
 128 bits (DHE 4096 bits)
Suite: TLS_RSA_WITH_AES_256_CCM_8
Suite ID: 0xc0a1
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_256_CCM_8
 256 bits
Suite: TLS_RSA_WITH_AES_256_CCM
Suite ID: 0xc09d
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_256_CCM
 256 bits
Suite: TLS_RSA_WITH_AES_128_GCM_SHA256
Suite ID: 0x9c
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_128_GCM_SHA256
 128 bits
Suite: TLS_RSA_WITH_AES_128_CCM_8
Suite ID: 0xc0a0
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_128_CCM_8
 128 bits
Suite: TLS_RSA_WITH_AES_128_CCM
Suite ID: 0xc09c
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_128_CCM
 128 bits
Suite: TLS_RSA_WITH_AES_256_CBC_SHA256
Suite ID: 0x3d
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_256_CBC_SHA256
 256 bits
Shows cipher suite configuration for this protocol version.TLS v1.1
Server preference
Suite: TLS_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0x35
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA
TLS_RSA_WITH_AES_256_CBC_SHA
 256 bits
Suite: TLS_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0x2f
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA
TLS_RSA_WITH_AES_128_CBC_SHA
 128 bits
Suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0xc014
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
 256 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0x39
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA
TLS_DHE_RSA_WITH_AES_256_CBC_SHA
 256 bits (DHE 4096 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0xc013
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
 128 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0x33
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA
TLS_DHE_RSA_WITH_AES_128_CBC_SHA
 128 bits (DHE 4096 bits)
Shows cipher suite configuration for this protocol version.TLS v1.0
Server preference
Suite: TLS_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0x35
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA
TLS_RSA_WITH_AES_256_CBC_SHA
 256 bits
Suite: TLS_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0x2f
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA
TLS_RSA_WITH_AES_128_CBC_SHA
 128 bits
Suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0xc014
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
 256 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0x39
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA
TLS_DHE_RSA_WITH_AES_256_CBC_SHA
 256 bits (DHE 4096 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0xc013
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
 128 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0x33
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA
TLS_DHE_RSA_WITH_AES_128_CBC_SHA
 128 bits (DHE 4096 bits)
These results have been retrieved from
our cache. This row indicates when was
that the original test ran.
Retrieved from cache
20 Jan 2022 02:21 UTC

Analysis

Notice
Deprecated TLS 1.0 protocol supported
TLS 1.0 is a weak older protocol that should be phased out. Sites that aim at a wide audience might still need to support TLS 1.0 for the time being, because many older clients don't support newer protocol versions. Sites with a modern user base might be able to disable TLS 1.0 even now. We recommend that you enable logging of encryption parameters, after which you can examine your protocol usage and make decisions with confidence.
Good
TLS 1.2 supported
Good. This server supports TLS 1.2, which can provide strong security when configured correctly. This version of the TLS protocol is necessary to provide good security with a wide range of clients that don't yet support TLS 1.3.
Good
Server enforces cipher suite preferences
Excellent. This server enforces server cipher suite preference, which means that it is able to select the best suite from the options submitted by clients. Combined with a well designed list of supported cipher suites, this settings enables negotiation of best security.
Good
Strong key exchange detected
Excellent. All cipher suites on this server rely on strong key exchange. The sweet spot is 2048 bits for DHE and 256 bits for ECDHE. Putting ECDHE suites first guarantees best security and best performance.
Good
Server prefers forward secrecy and authenticated encryption suites
Excellent. Not only does this server enforce its server preference, but it also has at the top of the list suites that support both forward secrecy and authenticated encryption. This is the best TLS 1.2 can offer.
Notice
Relaxed TLS assessment criteria applied to SMTP on port 25
We apply relaxed assessment criteria when evaluating TLS configuration of SMTP servers on port 25. This is because most delivery agents fall back to delivering via plaintext on failure to negotiate encryption. Some configuration elements that can be abused to attack other ports and protocols (e.g., SSLv2 and export cipher suites) are penalized in the same way as for other protocols. We will review this policy in the future.
Good
DHE server parameter not reused
This server does not reuse the private value used for the Diffie-Hellman key exchange.

TLS Configuration: mxext2.mailbox.org (2001:67c:2050:104:0:2:25:1) Cached

Encryption protocol version determines what features are
available for negotiation between client and server.
Supported protocols
TLS v1.2
Shows cipher suite configuration for this protocol version.TLS v1.2 Suite: TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
Suite ID: 0xcca8
Cipher name: CHACHA20
Cipher strength: 256 bits
Cipher mode: AEAD
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
 256 bits (ECDHE 384 bits)
These results have been retrieved from
our cache. This row indicates when was
that the original test ran.
Retrieved from cache
18 Jan 2022 10:46 UTC

Analysis

Good
TLS 1.2 supported
Good. This server supports TLS 1.2, which can provide strong security when configured correctly. This version of the TLS protocol is necessary to provide good security with a wide range of clients that don't yet support TLS 1.3.
Good
Strong key exchange detected
Excellent. All cipher suites on this server rely on strong key exchange. The sweet spot is 2048 bits for DHE and 256 bits for ECDHE. Putting ECDHE suites first guarantees best security and best performance.
Notice
Partial results shown
SMTP assessments usually take a long time. To get you some results faster, we initially perform shallow checks. If you come back later we may be able to show you complete results.
Notice
Relaxed TLS assessment criteria applied to SMTP on port 25
We apply relaxed assessment criteria when evaluating TLS configuration of SMTP servers on port 25. This is because most delivery agents fall back to delivering via plaintext on failure to negotiate encryption. Some configuration elements that can be abused to attack other ports and protocols (e.g., SSLv2 and export cipher suites) are penalized in the same way as for other protocols. We will review this policy in the future.

TLS Configuration: mxext2.mailbox.org (80.241.60.215) Cached

Encryption protocol version determines what features are
available for negotiation between client and server.
Supported protocols
TLS v1.3
TLS v1.2
TLS v1.1
TLS v1.0
Servers should always enforce their own cipher
suite preference, as that is the only approach
that guarantees that the best possible suite is
selected.
Server suite preference
Shows cipher suite configuration for this protocol version.TLS v1.3
Server preference
Suite: TLS_AES_256_GCM_SHA384
Suite ID: 0x1302
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: secp384r1
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA384
TLS_AES_256_GCM_SHA384
 256 bits (ECDHE 384 bits)
Suite: TLS_CHACHA20_POLY1305_SHA256
Suite ID: 0x1303
Cipher name: CHACHA20
Cipher strength: 256 bits
Cipher mode: AEAD
Key exchange: secp384r1
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_CHACHA20_POLY1305_SHA256
 256 bits (ECDHE 384 bits)
Suite: TLS_AES_128_GCM_SHA256
Suite ID: 0x1301
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: secp384r1
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_AES_128_GCM_SHA256
 128 bits (ECDHE 384 bits)
Shows cipher suite configuration for this protocol version.TLS v1.2
Server preference
Suite: TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
Suite ID: 0xcca8
Cipher name: CHACHA20
Cipher strength: 256 bits
Cipher mode: AEAD
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
 256 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256
Suite ID: 0xccaa
Cipher name: CHACHA20
Cipher strength: 256 bits
Cipher mode: AEAD
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA256
TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256
 256 bits (DHE 4096 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
Suite ID: 0xc030
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA384
TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
 256 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_AES_256_GCM_SHA384
Suite ID: 0x9f
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA384
TLS_DHE_RSA_WITH_AES_256_GCM_SHA384
 256 bits (DHE 4096 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
Suite ID: 0xc02f
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
 128 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_AES_128_GCM_SHA256
Suite ID: 0x9e
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA256
TLS_DHE_RSA_WITH_AES_128_GCM_SHA256
 128 bits (DHE 4096 bits)
Suite: TLS_RSA_WITH_AES_256_GCM_SHA384
Suite ID: 0x9d
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA384
TLS_RSA_WITH_AES_256_GCM_SHA384
 256 bits
Suite: TLS_RSA_WITH_AES_128_CBC_SHA256
Suite ID: 0x3c
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_128_CBC_SHA256
 128 bits
Suite: TLS_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0x35
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA
TLS_RSA_WITH_AES_256_CBC_SHA
 256 bits
Suite: TLS_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0x2f
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA
TLS_RSA_WITH_AES_128_CBC_SHA
 128 bits
Suite: TLS_DHE_RSA_WITH_AES_256_CCM_8
Suite ID: 0xc0a3
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA256
TLS_DHE_RSA_WITH_AES_256_CCM_8
 256 bits (DHE 4096 bits)
Suite: TLS_DHE_RSA_WITH_AES_256_CCM
Suite ID: 0xc09f
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA256
TLS_DHE_RSA_WITH_AES_256_CCM
 256 bits (DHE 4096 bits)
Suite: TLS_DHE_RSA_WITH_AES_128_CCM_8
Suite ID: 0xc0a2
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA256
TLS_DHE_RSA_WITH_AES_128_CCM_8
 128 bits (DHE 4096 bits)
Suite: TLS_DHE_RSA_WITH_AES_128_CCM
Suite ID: 0xc09e
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA256
TLS_DHE_RSA_WITH_AES_128_CCM
 128 bits (DHE 4096 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
Suite ID: 0xc028
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA384
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
 256 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_AES_256_CBC_SHA256
Suite ID: 0x6b
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA256
TLS_DHE_RSA_WITH_AES_256_CBC_SHA256
 256 bits (DHE 4096 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256
Suite ID: 0xc027
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256
 128 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_AES_128_CBC_SHA256
Suite ID: 0x67
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA256
TLS_DHE_RSA_WITH_AES_128_CBC_SHA256
 128 bits (DHE 4096 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0xc014
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
 256 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0x39
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA
TLS_DHE_RSA_WITH_AES_256_CBC_SHA
 256 bits (DHE 4096 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0xc013
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
 128 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0x33
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA
TLS_DHE_RSA_WITH_AES_128_CBC_SHA
 128 bits (DHE 4096 bits)
Suite: TLS_RSA_WITH_AES_256_CCM_8
Suite ID: 0xc0a1
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_256_CCM_8
 256 bits
Suite: TLS_RSA_WITH_AES_256_CCM
Suite ID: 0xc09d
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_256_CCM
 256 bits
Suite: TLS_RSA_WITH_AES_128_GCM_SHA256
Suite ID: 0x9c
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_128_GCM_SHA256
 128 bits
Suite: TLS_RSA_WITH_AES_128_CCM_8
Suite ID: 0xc0a0
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_128_CCM_8
 128 bits
Suite: TLS_RSA_WITH_AES_128_CCM
Suite ID: 0xc09c
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_128_CCM
 128 bits
Suite: TLS_RSA_WITH_AES_256_CBC_SHA256
Suite ID: 0x3d
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_256_CBC_SHA256
 256 bits
Shows cipher suite configuration for this protocol version.TLS v1.1
Server preference
Suite: TLS_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0x35
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA
TLS_RSA_WITH_AES_256_CBC_SHA
 256 bits
Suite: TLS_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0x2f
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA
TLS_RSA_WITH_AES_128_CBC_SHA
 128 bits
Suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0xc014
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
 256 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0x39
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA
TLS_DHE_RSA_WITH_AES_256_CBC_SHA
 256 bits (DHE 4096 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0xc013
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
 128 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0x33
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA
TLS_DHE_RSA_WITH_AES_128_CBC_SHA
 128 bits (DHE 4096 bits)
Shows cipher suite configuration for this protocol version.TLS v1.0
Server preference
Suite: TLS_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0x35
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA
TLS_RSA_WITH_AES_256_CBC_SHA
 256 bits
Suite: TLS_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0x2f
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA
TLS_RSA_WITH_AES_128_CBC_SHA
 128 bits
Suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0xc014
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
 256 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0x39
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA
TLS_DHE_RSA_WITH_AES_256_CBC_SHA
 256 bits (DHE 4096 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0xc013
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
 128 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0x33
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA
TLS_DHE_RSA_WITH_AES_128_CBC_SHA
 128 bits (DHE 4096 bits)
These results have been retrieved from
our cache. This row indicates when was
that the original test ran.
Retrieved from cache
20 Jan 2022 03:24 UTC

Analysis

Notice
Deprecated TLS 1.0 protocol supported
TLS 1.0 is a weak older protocol that should be phased out. Sites that aim at a wide audience might still need to support TLS 1.0 for the time being, because many older clients don't support newer protocol versions. Sites with a modern user base might be able to disable TLS 1.0 even now. We recommend that you enable logging of encryption parameters, after which you can examine your protocol usage and make decisions with confidence.
Good
TLS 1.2 supported
Good. This server supports TLS 1.2, which can provide strong security when configured correctly. This version of the TLS protocol is necessary to provide good security with a wide range of clients that don't yet support TLS 1.3.
Good
Server enforces cipher suite preferences
Excellent. This server enforces server cipher suite preference, which means that it is able to select the best suite from the options submitted by clients. Combined with a well designed list of supported cipher suites, this settings enables negotiation of best security.
Good
Strong key exchange detected
Excellent. All cipher suites on this server rely on strong key exchange. The sweet spot is 2048 bits for DHE and 256 bits for ECDHE. Putting ECDHE suites first guarantees best security and best performance.
Good
Server prefers forward secrecy and authenticated encryption suites
Excellent. Not only does this server enforce its server preference, but it also has at the top of the list suites that support both forward secrecy and authenticated encryption. This is the best TLS 1.2 can offer.
Notice
Relaxed TLS assessment criteria applied to SMTP on port 25
We apply relaxed assessment criteria when evaluating TLS configuration of SMTP servers on port 25. This is because most delivery agents fall back to delivering via plaintext on failure to negotiate encryption. Some configuration elements that can be abused to attack other ports and protocols (e.g., SSLv2 and export cipher suites) are penalized in the same way as for other protocols. We will review this policy in the future.
Good
DHE server parameter not reused
This server does not reuse the private value used for the Diffie-Hellman key exchange.

TLS Configuration: mxext3.mailbox.org (2001:67c:2050:104:0:3:25:1) Cached

Encryption protocol version determines what features are
available for negotiation between client and server.
Supported protocols
TLS v1.3
TLS v1.2
TLS v1.1
TLS v1.0
Servers should always enforce their own cipher
suite preference, as that is the only approach
that guarantees that the best possible suite is
selected.
Server suite preference
Shows cipher suite configuration for this protocol version.TLS v1.3
Server preference
Suite: TLS_AES_256_GCM_SHA384
Suite ID: 0x1302
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: secp384r1
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA384
TLS_AES_256_GCM_SHA384
 256 bits (ECDHE 384 bits)
Suite: TLS_CHACHA20_POLY1305_SHA256
Suite ID: 0x1303
Cipher name: CHACHA20
Cipher strength: 256 bits
Cipher mode: AEAD
Key exchange: secp384r1
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_CHACHA20_POLY1305_SHA256
 256 bits (ECDHE 384 bits)
Suite: TLS_AES_128_GCM_SHA256
Suite ID: 0x1301
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: secp384r1
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_AES_128_GCM_SHA256
 128 bits (ECDHE 384 bits)
Shows cipher suite configuration for this protocol version.TLS v1.2
Server preference
Suite: TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
Suite ID: 0xcca8
Cipher name: CHACHA20
Cipher strength: 256 bits
Cipher mode: AEAD
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
 256 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256
Suite ID: 0xccaa
Cipher name: CHACHA20
Cipher strength: 256 bits
Cipher mode: AEAD
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA256
TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256
 256 bits (DHE 4096 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
Suite ID: 0xc030
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA384
TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
 256 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_AES_256_GCM_SHA384
Suite ID: 0x9f
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA384
TLS_DHE_RSA_WITH_AES_256_GCM_SHA384
 256 bits (DHE 4096 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
Suite ID: 0xc02f
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
 128 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_AES_128_GCM_SHA256
Suite ID: 0x9e
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA256
TLS_DHE_RSA_WITH_AES_128_GCM_SHA256
 128 bits (DHE 4096 bits)
Suite: TLS_RSA_WITH_AES_256_GCM_SHA384
Suite ID: 0x9d
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA384
TLS_RSA_WITH_AES_256_GCM_SHA384
 256 bits
Suite: TLS_RSA_WITH_AES_128_CBC_SHA256
Suite ID: 0x3c
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_128_CBC_SHA256
 128 bits
Suite: TLS_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0x35
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA
TLS_RSA_WITH_AES_256_CBC_SHA
 256 bits
Suite: TLS_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0x2f
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA
TLS_RSA_WITH_AES_128_CBC_SHA
 128 bits
Suite: TLS_DHE_RSA_WITH_AES_256_CCM_8
Suite ID: 0xc0a3
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA256
TLS_DHE_RSA_WITH_AES_256_CCM_8
 256 bits (DHE 4096 bits)
Suite: TLS_DHE_RSA_WITH_AES_256_CCM
Suite ID: 0xc09f
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA256
TLS_DHE_RSA_WITH_AES_256_CCM
 256 bits (DHE 4096 bits)
Suite: TLS_DHE_RSA_WITH_AES_128_CCM_8
Suite ID: 0xc0a2
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA256
TLS_DHE_RSA_WITH_AES_128_CCM_8
 128 bits (DHE 4096 bits)
Suite: TLS_DHE_RSA_WITH_AES_128_CCM
Suite ID: 0xc09e
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA256
TLS_DHE_RSA_WITH_AES_128_CCM
 128 bits (DHE 4096 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
Suite ID: 0xc028
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA384
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
 256 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_AES_256_CBC_SHA256
Suite ID: 0x6b
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA256
TLS_DHE_RSA_WITH_AES_256_CBC_SHA256
 256 bits (DHE 4096 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256
Suite ID: 0xc027
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256
 128 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_AES_128_CBC_SHA256
Suite ID: 0x67
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA256
TLS_DHE_RSA_WITH_AES_128_CBC_SHA256
 128 bits (DHE 4096 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0xc014
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
 256 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0x39
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA
TLS_DHE_RSA_WITH_AES_256_CBC_SHA
 256 bits (DHE 4096 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0xc013
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
 128 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0x33
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA
TLS_DHE_RSA_WITH_AES_128_CBC_SHA
 128 bits (DHE 4096 bits)
Suite: TLS_RSA_WITH_AES_256_CCM_8
Suite ID: 0xc0a1
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_256_CCM_8
 256 bits
Suite: TLS_RSA_WITH_AES_256_CCM
Suite ID: 0xc09d
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_256_CCM
 256 bits
Suite: TLS_RSA_WITH_AES_128_GCM_SHA256
Suite ID: 0x9c
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_128_GCM_SHA256
 128 bits
Suite: TLS_RSA_WITH_AES_128_CCM_8
Suite ID: 0xc0a0
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_128_CCM_8
 128 bits
Suite: TLS_RSA_WITH_AES_128_CCM
Suite ID: 0xc09c
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_128_CCM
 128 bits
Suite: TLS_RSA_WITH_AES_256_CBC_SHA256
Suite ID: 0x3d
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_256_CBC_SHA256
 256 bits
Shows cipher suite configuration for this protocol version.TLS v1.1
Server preference
Suite: TLS_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0x35
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA
TLS_RSA_WITH_AES_256_CBC_SHA
 256 bits
Suite: TLS_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0x2f
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA
TLS_RSA_WITH_AES_128_CBC_SHA
 128 bits
Suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0xc014
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
 256 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0x39
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA
TLS_DHE_RSA_WITH_AES_256_CBC_SHA
 256 bits (DHE 4096 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0xc013
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
 128 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0x33
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA
TLS_DHE_RSA_WITH_AES_128_CBC_SHA
 128 bits (DHE 4096 bits)
Shows cipher suite configuration for this protocol version.TLS v1.0
Server preference
Suite: TLS_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0x35
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA
TLS_RSA_WITH_AES_256_CBC_SHA
 256 bits
Suite: TLS_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0x2f
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA
TLS_RSA_WITH_AES_128_CBC_SHA
 128 bits
Suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0xc014
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
 256 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0x39
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA
TLS_DHE_RSA_WITH_AES_256_CBC_SHA
 256 bits (DHE 4096 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0xc013
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
 128 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0x33
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA
TLS_DHE_RSA_WITH_AES_128_CBC_SHA
 128 bits (DHE 4096 bits)
These results have been retrieved from
our cache. This row indicates when was
that the original test ran.
Retrieved from cache
20 Jan 2022 10:56 UTC

Analysis

Notice
Deprecated TLS 1.0 protocol supported
TLS 1.0 is a weak older protocol that should be phased out. Sites that aim at a wide audience might still need to support TLS 1.0 for the time being, because many older clients don't support newer protocol versions. Sites with a modern user base might be able to disable TLS 1.0 even now. We recommend that you enable logging of encryption parameters, after which you can examine your protocol usage and make decisions with confidence.
Good
TLS 1.2 supported
Good. This server supports TLS 1.2, which can provide strong security when configured correctly. This version of the TLS protocol is necessary to provide good security with a wide range of clients that don't yet support TLS 1.3.
Good
Server enforces cipher suite preferences
Excellent. This server enforces server cipher suite preference, which means that it is able to select the best suite from the options submitted by clients. Combined with a well designed list of supported cipher suites, this settings enables negotiation of best security.
Good
Strong key exchange detected
Excellent. All cipher suites on this server rely on strong key exchange. The sweet spot is 2048 bits for DHE and 256 bits for ECDHE. Putting ECDHE suites first guarantees best security and best performance.
Good
Server prefers forward secrecy and authenticated encryption suites
Excellent. Not only does this server enforce its server preference, but it also has at the top of the list suites that support both forward secrecy and authenticated encryption. This is the best TLS 1.2 can offer.
Notice
Relaxed TLS assessment criteria applied to SMTP on port 25
We apply relaxed assessment criteria when evaluating TLS configuration of SMTP servers on port 25. This is because most delivery agents fall back to delivering via plaintext on failure to negotiate encryption. Some configuration elements that can be abused to attack other ports and protocols (e.g., SSLv2 and export cipher suites) are penalized in the same way as for other protocols. We will review this policy in the future.
Good
DHE server parameter not reused
This server does not reuse the private value used for the Diffie-Hellman key exchange.

TLS Configuration: mxext3.mailbox.org (80.241.60.216) Cached

Encryption protocol version determines what features are
available for negotiation between client and server.
Supported protocols
TLS v1.3
TLS v1.2
TLS v1.1
TLS v1.0
Servers should always enforce their own cipher
suite preference, as that is the only approach
that guarantees that the best possible suite is
selected.
Server suite preference
Shows cipher suite configuration for this protocol version.TLS v1.3
Server preference
Suite: TLS_AES_256_GCM_SHA384
Suite ID: 0x1302
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: secp384r1
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA384
TLS_AES_256_GCM_SHA384
 256 bits (ECDHE 384 bits)
Suite: TLS_CHACHA20_POLY1305_SHA256
Suite ID: 0x1303
Cipher name: CHACHA20
Cipher strength: 256 bits
Cipher mode: AEAD
Key exchange: secp384r1
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_CHACHA20_POLY1305_SHA256
 256 bits (ECDHE 384 bits)
Suite: TLS_AES_128_GCM_SHA256
Suite ID: 0x1301
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: secp384r1
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_AES_128_GCM_SHA256
 128 bits (ECDHE 384 bits)
Shows cipher suite configuration for this protocol version.TLS v1.2
Server preference
Suite: TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
Suite ID: 0xcca8
Cipher name: CHACHA20
Cipher strength: 256 bits
Cipher mode: AEAD
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
 256 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256
Suite ID: 0xccaa
Cipher name: CHACHA20
Cipher strength: 256 bits
Cipher mode: AEAD
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA256
TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256
 256 bits (DHE 4096 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
Suite ID: 0xc030
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA384
TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
 256 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_AES_256_GCM_SHA384
Suite ID: 0x9f
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA384
TLS_DHE_RSA_WITH_AES_256_GCM_SHA384
 256 bits (DHE 4096 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
Suite ID: 0xc02f
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
 128 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_AES_128_GCM_SHA256
Suite ID: 0x9e
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA256
TLS_DHE_RSA_WITH_AES_128_GCM_SHA256
 128 bits (DHE 4096 bits)
Suite: TLS_RSA_WITH_AES_256_GCM_SHA384
Suite ID: 0x9d
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA384
TLS_RSA_WITH_AES_256_GCM_SHA384
 256 bits
Suite: TLS_RSA_WITH_AES_128_CBC_SHA256
Suite ID: 0x3c
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_128_CBC_SHA256
 128 bits
Suite: TLS_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0x35
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA
TLS_RSA_WITH_AES_256_CBC_SHA
 256 bits
Suite: TLS_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0x2f
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA
TLS_RSA_WITH_AES_128_CBC_SHA
 128 bits
Suite: TLS_DHE_RSA_WITH_AES_256_CCM_8
Suite ID: 0xc0a3
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA256
TLS_DHE_RSA_WITH_AES_256_CCM_8
 256 bits (DHE 4096 bits)
Suite: TLS_DHE_RSA_WITH_AES_256_CCM
Suite ID: 0xc09f
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA256
TLS_DHE_RSA_WITH_AES_256_CCM
 256 bits (DHE 4096 bits)
Suite: TLS_DHE_RSA_WITH_AES_128_CCM_8
Suite ID: 0xc0a2
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA256
TLS_DHE_RSA_WITH_AES_128_CCM_8
 128 bits (DHE 4096 bits)
Suite: TLS_DHE_RSA_WITH_AES_128_CCM
Suite ID: 0xc09e
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA256
TLS_DHE_RSA_WITH_AES_128_CCM
 128 bits (DHE 4096 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
Suite ID: 0xc028
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA384
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
 256 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_AES_256_CBC_SHA256
Suite ID: 0x6b
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA256
TLS_DHE_RSA_WITH_AES_256_CBC_SHA256
 256 bits (DHE 4096 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256
Suite ID: 0xc027
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256
 128 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_AES_128_CBC_SHA256
Suite ID: 0x67
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA256
TLS_DHE_RSA_WITH_AES_128_CBC_SHA256
 128 bits (DHE 4096 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0xc014
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
 256 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0x39
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA
TLS_DHE_RSA_WITH_AES_256_CBC_SHA
 256 bits (DHE 4096 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0xc013
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
 128 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0x33
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA
TLS_DHE_RSA_WITH_AES_128_CBC_SHA
 128 bits (DHE 4096 bits)
Suite: TLS_RSA_WITH_AES_256_CCM_8
Suite ID: 0xc0a1
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_256_CCM_8
 256 bits
Suite: TLS_RSA_WITH_AES_256_CCM
Suite ID: 0xc09d
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_256_CCM
 256 bits
Suite: TLS_RSA_WITH_AES_128_GCM_SHA256
Suite ID: 0x9c
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_128_GCM_SHA256
 128 bits
Suite: TLS_RSA_WITH_AES_128_CCM_8
Suite ID: 0xc0a0
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_128_CCM_8
 128 bits
Suite: TLS_RSA_WITH_AES_128_CCM
Suite ID: 0xc09c
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_128_CCM
 128 bits
Suite: TLS_RSA_WITH_AES_256_CBC_SHA256
Suite ID: 0x3d
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_256_CBC_SHA256
 256 bits
Shows cipher suite configuration for this protocol version.TLS v1.1
Server preference
Suite: TLS_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0x35
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA
TLS_RSA_WITH_AES_256_CBC_SHA
 256 bits
Suite: TLS_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0x2f
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA
TLS_RSA_WITH_AES_128_CBC_SHA
 128 bits
Suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0xc014
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
 256 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0x39
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA
TLS_DHE_RSA_WITH_AES_256_CBC_SHA
 256 bits (DHE 4096 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0xc013
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
 128 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0x33
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA
TLS_DHE_RSA_WITH_AES_128_CBC_SHA
 128 bits (DHE 4096 bits)
Shows cipher suite configuration for this protocol version.TLS v1.0
Server preference
Suite: TLS_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0x35
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA
TLS_RSA_WITH_AES_256_CBC_SHA
 256 bits
Suite: TLS_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0x2f
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 4096 bits
Forward secrecy: No (WEAK)
PRF: SHA
TLS_RSA_WITH_AES_128_CBC_SHA
 128 bits
Suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0xc014
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
 256 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0x39
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA
TLS_DHE_RSA_WITH_AES_256_CBC_SHA
 256 bits (DHE 4096 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0xc013
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
 128 bits (ECDHE 384 bits)
Suite: TLS_DHE_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0x33
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: DHE_RSA
Key exchange strength: 4096 bits
Forward secrecy: Yes
PRF: SHA
TLS_DHE_RSA_WITH_AES_128_CBC_SHA
 128 bits (DHE 4096 bits)
These results have been retrieved from
our cache. This row indicates when was
that the original test ran.
Retrieved from cache
20 Jan 2022 13:00 UTC

Analysis

Notice
Deprecated TLS 1.0 protocol supported
TLS 1.0 is a weak older protocol that should be phased out. Sites that aim at a wide audience might still need to support TLS 1.0 for the time being, because many older clients don't support newer protocol versions. Sites with a modern user base might be able to disable TLS 1.0 even now. We recommend that you enable logging of encryption parameters, after which you can examine your protocol usage and make decisions with confidence.
Good
TLS 1.2 supported
Good. This server supports TLS 1.2, which can provide strong security when configured correctly. This version of the TLS protocol is necessary to provide good security with a wide range of clients that don't yet support TLS 1.3.
Good
Server enforces cipher suite preferences
Excellent. This server enforces server cipher suite preference, which means that it is able to select the best suite from the options submitted by clients. Combined with a well designed list of supported cipher suites, this settings enables negotiation of best security.
Good
Strong key exchange detected
Excellent. All cipher suites on this server rely on strong key exchange. The sweet spot is 2048 bits for DHE and 256 bits for ECDHE. Putting ECDHE suites first guarantees best security and best performance.
Good
Server prefers forward secrecy and authenticated encryption suites
Excellent. Not only does this server enforce its server preference, but it also has at the top of the list suites that support both forward secrecy and authenticated encryption. This is the best TLS 1.2 can offer.
Notice
Relaxed TLS assessment criteria applied to SMTP on port 25
We apply relaxed assessment criteria when evaluating TLS configuration of SMTP servers on port 25. This is because most delivery agents fall back to delivering via plaintext on failure to negotiate encryption. Some configuration elements that can be abused to attack other ports and protocols (e.g., SSLv2 and export cipher suites) are penalized in the same way as for other protocols. We will review this policy in the future.
Good
DHE server parameter not reused
This server does not reuse the private value used for the Diffie-Hellman key exchange.

Email Certificates (SMTP)

A certificate is a digital document that contains a public key, some information about the entity associated with it, and a digital signature from the certificate issuer. It’s a mechanism that enables us to exchange, store, and use public keys. Being able to reliably verify the identity of a remote server is crucial in order to achieve secure encrypted communication.

Test passed
Everything seems to be well configured. Well done.
Some TLS and PKI information shown may have been retrieved from cache. The notes provide more information.

Certificate #1  Cached

Leaf certificate *.mailbox.org
Issuer: DigiCert
Not Before: 09 Jun 2021 00:00:00 UTC
Not After: 09 Jun 2022 23:59:59 UTC (expires in 4 months 20 days)
Key: RSA 4096 bits
Signature: SHA256withRSA
 View details

Analysis

Good
Strong private key
Good. The private key associated with this certificate is secure.
Good
Strong signature algorithm
Good. This certificate uses a strong signature algorithm.
Good
Certificate matches hostname
Good. The provided certificate matches the expected hostnames.
Good
Certificate dates match
Good. The certificate is valid for use at this point of time.
Good
Certificate has not been revoked
Good. This certificate has not been revoked.
Good
Certificate satisfies Apple's CT compliance requirements
Good. This certificate satisfies Apple's CT requirements at present.
Good
Certificate satisfies Chrome's CT compliance requirements
Good. This certificate satisfies Chrome's CT requirements at present.
Notice
Symantec subordinate CA excluded from early expiration
Although the leaf certificate ultimately chains to a Symantec root, it has been issued from an independently-operated subordinate CA that has been excluded from early expiration.

Certificate Chain

Leaf certificate
*.mailbox.org | ef8a1a3
Not After: 09 Jun 2022 23:59:59 UTC (expires in 4 months 20 days)
Authentication: RSA 4096 bits (SHA256withRSA)
 View details
Intermediate certificate
Thawte TLS RSA CA G1 | 4bcc5e2
Not After: 02 Nov 2027 12:24:25 UTC (expires in 5 years 9 months)
Authentication: RSA 2048 bits (SHA256withRSA)
 View details
Root certificate
DigiCert Global Root G2 | cb3ccbb
Not After: 15 Jan 2038 12:00:00 UTC (expires in 15 years 11 months)
Authentication: RSA 2048 bits (SHA256withRSA)
 View details

Analysis

Good
Certificate chain is correct
Good. This chain contains all the right certificates and in the right order.

Email DANE (SMTP)

DNS-based Authentication of Named Entities (DANE) is a bridge between DNSSEC and TLS. In one possible scenario, DANE can be used for public key pinning, building on an existing publicly-trusted certificate. In another approach, it can be used to completely bypass the CA ecosystem and establish trust using DNSSEC alone.

Test passed
Everything seems to be well configured. Well done.
Some TLS and PKI information shown may have been retrieved from cache. The notes provide more information.

DANE: mxext1.mailbox.org (2001:67c:2050:104:0:1:25:1)

Specifies which certificate in the chain
is being pinned and how validation should
be performed.
Certificate Usage
Domain-issued certificate / DANE-EE (3) Creates a leaf pin for a certificate that must be
present in the certificate chain. PKIX validation is
not performed and the pinned certificate is assumed
to be trusted.
Determines if the association is made with
a certificate or with a public key (via
its SPKI structure).
Selector
SPKI structure (1)
Determines how matching is done; directly or via a hash. Matching Type SHA2-256 (1)
Contains the data necessary to perform the matching. Data 4758af6f02dfb5dc8795fa402e77a8a0486af5e85d2ca60c294476aadc40b220
Specifies which certificate in the chain
is being pinned and how validation should
be performed.
Certificate Usage
Domain-issued certificate / DANE-EE (3) Creates a leaf pin for a certificate that must be
present in the certificate chain. PKIX validation is
not performed and the pinned certificate is assumed
to be trusted.
Determines if the association is made with
a certificate or with a public key (via
its SPKI structure).
Selector
SPKI structure (1)
Determines how matching is done; directly or via a hash. Matching Type SHA2-256 (1)
Contains the data necessary to perform the matching. Data e41cc7633029afdba53744d7e5fc31ef507e592de9dfb33557bf3b9a79239446
Specifies which certificate in the chain
is being pinned and how validation should
be performed.
Certificate Usage
Domain-issued certificate / DANE-EE (3) Creates a leaf pin for a certificate that must be
present in the certificate chain. PKIX validation is
not performed and the pinned certificate is assumed
to be trusted.
Determines if the association is made with
a certificate or with a public key (via
its SPKI structure).
Selector
SPKI structure (1)
Determines how matching is done; directly or via a hash. Matching Type SHA2-256 (1)
Contains the data necessary to perform the matching. Data 996ad31d65e03f038b8ec950f6f26611529da03e3a283e4400cba2edd04b8a88

Leaf certificate: RSA 4096 bits
Subject: CN=*.mailbox.org
Issuer: CN=Thawte TLS RSA CA G1, OU=www.digicert.com, O=DigiCert Inc, C=US
*.mailbox.org (RSA 4096 bits)

Analysis

Good
Valid DANE configuration
Excellent. Your DANE configuration matches the certificate chain(s) provided by the service. Your TLS configuration enjoys the additional benefit of DANE validation.

DANE: mxext1.mailbox.org (80.241.60.212)

Specifies which certificate in the chain
is being pinned and how validation should
be performed.
Certificate Usage
Domain-issued certificate / DANE-EE (3) Creates a leaf pin for a certificate that must be
present in the certificate chain. PKIX validation is
not performed and the pinned certificate is assumed
to be trusted.
Determines if the association is made with
a certificate or with a public key (via
its SPKI structure).
Selector
SPKI structure (1)
Determines how matching is done; directly or via a hash. Matching Type SHA2-256 (1)
Contains the data necessary to perform the matching. Data 4758af6f02dfb5dc8795fa402e77a8a0486af5e85d2ca60c294476aadc40b220
Specifies which certificate in the chain
is being pinned and how validation should
be performed.
Certificate Usage
Domain-issued certificate / DANE-EE (3) Creates a leaf pin for a certificate that must be
present in the certificate chain. PKIX validation is
not performed and the pinned certificate is assumed
to be trusted.
Determines if the association is made with
a certificate or with a public key (via
its SPKI structure).
Selector
SPKI structure (1)
Determines how matching is done; directly or via a hash. Matching Type SHA2-256 (1)
Contains the data necessary to perform the matching. Data e41cc7633029afdba53744d7e5fc31ef507e592de9dfb33557bf3b9a79239446
Specifies which certificate in the chain
is being pinned and how validation should
be performed.
Certificate Usage
Domain-issued certificate / DANE-EE (3) Creates a leaf pin for a certificate that must be
present in the certificate chain. PKIX validation is
not performed and the pinned certificate is assumed
to be trusted.
Determines if the association is made with
a certificate or with a public key (via
its SPKI structure).
Selector
SPKI structure (1)
Determines how matching is done; directly or via a hash. Matching Type SHA2-256 (1)
Contains the data necessary to perform the matching. Data 996ad31d65e03f038b8ec950f6f26611529da03e3a283e4400cba2edd04b8a88

Leaf certificate: RSA 4096 bits
Subject: CN=*.mailbox.org
Issuer: CN=Thawte TLS RSA CA G1, OU=www.digicert.com, O=DigiCert Inc, C=US
*.mailbox.org (RSA 4096 bits)

Analysis

Good
Valid DANE configuration
Excellent. Your DANE configuration matches the certificate chain(s) provided by the service. Your TLS configuration enjoys the additional benefit of DANE validation.

DANE: mxext2.mailbox.org (2001:67c:2050:104:0:2:25:1)

Specifies which certificate in the chain
is being pinned and how validation should
be performed.
Certificate Usage
Domain-issued certificate / DANE-EE (3) Creates a leaf pin for a certificate that must be
present in the certificate chain. PKIX validation is
not performed and the pinned certificate is assumed
to be trusted.
Determines if the association is made with
a certificate or with a public key (via
its SPKI structure).
Selector
SPKI structure (1)
Determines how matching is done; directly or via a hash. Matching Type SHA2-256 (1)
Contains the data necessary to perform the matching. Data 996ad31d65e03f038b8ec950f6f26611529da03e3a283e4400cba2edd04b8a88

Leaf certificate: RSA 4096 bits
Subject: CN=*.mailbox.org
Issuer: CN=Thawte TLS RSA CA G1, OU=www.digicert.com, O=DigiCert Inc, C=US
*.mailbox.org (RSA 4096 bits)

Specifies which certificate in the chain
is being pinned and how validation should
be performed.
Certificate Usage
Domain-issued certificate / DANE-EE (3) Creates a leaf pin for a certificate that must be
present in the certificate chain. PKIX validation is
not performed and the pinned certificate is assumed
to be trusted.
Determines if the association is made with
a certificate or with a public key (via
its SPKI structure).
Selector
SPKI structure (1)
Determines how matching is done; directly or via a hash. Matching Type SHA2-256 (1)
Contains the data necessary to perform the matching. Data e41cc7633029afdba53744d7e5fc31ef507e592de9dfb33557bf3b9a79239446
Specifies which certificate in the chain
is being pinned and how validation should
be performed.
Certificate Usage
Domain-issued certificate / DANE-EE (3) Creates a leaf pin for a certificate that must be
present in the certificate chain. PKIX validation is
not performed and the pinned certificate is assumed
to be trusted.
Determines if the association is made with
a certificate or with a public key (via
its SPKI structure).
Selector
SPKI structure (1)
Determines how matching is done; directly or via a hash. Matching Type SHA2-256 (1)
Contains the data necessary to perform the matching. Data 4758af6f02dfb5dc8795fa402e77a8a0486af5e85d2ca60c294476aadc40b220

Analysis

Good
Valid DANE configuration
Excellent. Your DANE configuration matches the certificate chain(s) provided by the service. Your TLS configuration enjoys the additional benefit of DANE validation.

DANE: mxext2.mailbox.org (80.241.60.215)

Specifies which certificate in the chain
is being pinned and how validation should
be performed.
Certificate Usage
Domain-issued certificate / DANE-EE (3) Creates a leaf pin for a certificate that must be
present in the certificate chain. PKIX validation is
not performed and the pinned certificate is assumed
to be trusted.
Determines if the association is made with
a certificate or with a public key (via
its SPKI structure).
Selector
SPKI structure (1)
Determines how matching is done; directly or via a hash. Matching Type SHA2-256 (1)
Contains the data necessary to perform the matching. Data 996ad31d65e03f038b8ec950f6f26611529da03e3a283e4400cba2edd04b8a88

Leaf certificate: RSA 4096 bits
Subject: CN=*.mailbox.org
Issuer: CN=Thawte TLS RSA CA G1, OU=www.digicert.com, O=DigiCert Inc, C=US
*.mailbox.org (RSA 4096 bits)

Specifies which certificate in the chain
is being pinned and how validation should
be performed.
Certificate Usage
Domain-issued certificate / DANE-EE (3) Creates a leaf pin for a certificate that must be
present in the certificate chain. PKIX validation is
not performed and the pinned certificate is assumed
to be trusted.
Determines if the association is made with
a certificate or with a public key (via
its SPKI structure).
Selector
SPKI structure (1)
Determines how matching is done; directly or via a hash. Matching Type SHA2-256 (1)
Contains the data necessary to perform the matching. Data e41cc7633029afdba53744d7e5fc31ef507e592de9dfb33557bf3b9a79239446
Specifies which certificate in the chain
is being pinned and how validation should
be performed.
Certificate Usage
Domain-issued certificate / DANE-EE (3) Creates a leaf pin for a certificate that must be
present in the certificate chain. PKIX validation is
not performed and the pinned certificate is assumed
to be trusted.
Determines if the association is made with
a certificate or with a public key (via
its SPKI structure).
Selector
SPKI structure (1)
Determines how matching is done; directly or via a hash. Matching Type SHA2-256 (1)
Contains the data necessary to perform the matching. Data 4758af6f02dfb5dc8795fa402e77a8a0486af5e85d2ca60c294476aadc40b220

Analysis

Good
Valid DANE configuration
Excellent. Your DANE configuration matches the certificate chain(s) provided by the service. Your TLS configuration enjoys the additional benefit of DANE validation.

DANE: mxext3.mailbox.org (2001:67c:2050:104:0:3:25:1)

Specifies which certificate in the chain
is being pinned and how validation should
be performed.
Certificate Usage
Domain-issued certificate / DANE-EE (3) Creates a leaf pin for a certificate that must be
present in the certificate chain. PKIX validation is
not performed and the pinned certificate is assumed
to be trusted.
Determines if the association is made with
a certificate or with a public key (via
its SPKI structure).
Selector
SPKI structure (1)
Determines how matching is done; directly or via a hash. Matching Type SHA2-256 (1)
Contains the data necessary to perform the matching. Data 996ad31d65e03f038b8ec950f6f26611529da03e3a283e4400cba2edd04b8a88

Leaf certificate: RSA 4096 bits
Subject: CN=*.mailbox.org
Issuer: CN=Thawte TLS RSA CA G1, OU=www.digicert.com, O=DigiCert Inc, C=US
*.mailbox.org (RSA 4096 bits)

Specifies which certificate in the chain
is being pinned and how validation should
be performed.
Certificate Usage
Domain-issued certificate / DANE-EE (3) Creates a leaf pin for a certificate that must be
present in the certificate chain. PKIX validation is
not performed and the pinned certificate is assumed
to be trusted.
Determines if the association is made with
a certificate or with a public key (via
its SPKI structure).
Selector
SPKI structure (1)
Determines how matching is done; directly or via a hash. Matching Type SHA2-256 (1)
Contains the data necessary to perform the matching. Data 4758af6f02dfb5dc8795fa402e77a8a0486af5e85d2ca60c294476aadc40b220
Specifies which certificate in the chain
is being pinned and how validation should
be performed.
Certificate Usage
Domain-issued certificate / DANE-EE (3) Creates a leaf pin for a certificate that must be
present in the certificate chain. PKIX validation is
not performed and the pinned certificate is assumed
to be trusted.
Determines if the association is made with
a certificate or with a public key (via
its SPKI structure).
Selector
SPKI structure (1)
Determines how matching is done; directly or via a hash. Matching Type SHA2-256 (1)
Contains the data necessary to perform the matching. Data e41cc7633029afdba53744d7e5fc31ef507e592de9dfb33557bf3b9a79239446

Analysis

Good
Valid DANE configuration
Excellent. Your DANE configuration matches the certificate chain(s) provided by the service. Your TLS configuration enjoys the additional benefit of DANE validation.

DANE: mxext3.mailbox.org (80.241.60.216)

Specifies which certificate in the chain
is being pinned and how validation should
be performed.
Certificate Usage
Domain-issued certificate / DANE-EE (3) Creates a leaf pin for a certificate that must be
present in the certificate chain. PKIX validation is
not performed and the pinned certificate is assumed
to be trusted.
Determines if the association is made with
a certificate or with a public key (via
its SPKI structure).
Selector
SPKI structure (1)
Determines how matching is done; directly or via a hash. Matching Type SHA2-256 (1)
Contains the data necessary to perform the matching. Data 996ad31d65e03f038b8ec950f6f26611529da03e3a283e4400cba2edd04b8a88

Leaf certificate: RSA 4096 bits
Subject: CN=*.mailbox.org
Issuer: CN=Thawte TLS RSA CA G1, OU=www.digicert.com, O=DigiCert Inc, C=US
*.mailbox.org (RSA 4096 bits)

Specifies which certificate in the chain
is being pinned and how validation should
be performed.
Certificate Usage
Domain-issued certificate / DANE-EE (3) Creates a leaf pin for a certificate that must be
present in the certificate chain. PKIX validation is
not performed and the pinned certificate is assumed
to be trusted.
Determines if the association is made with
a certificate or with a public key (via
its SPKI structure).
Selector
SPKI structure (1)
Determines how matching is done; directly or via a hash. Matching Type SHA2-256 (1)
Contains the data necessary to perform the matching. Data 4758af6f02dfb5dc8795fa402e77a8a0486af5e85d2ca60c294476aadc40b220
Specifies which certificate in the chain
is being pinned and how validation should
be performed.
Certificate Usage
Domain-issued certificate / DANE-EE (3) Creates a leaf pin for a certificate that must be
present in the certificate chain. PKIX validation is
not performed and the pinned certificate is assumed
to be trusted.
Determines if the association is made with
a certificate or with a public key (via
its SPKI structure).
Selector
SPKI structure (1)
Determines how matching is done; directly or via a hash. Matching Type SHA2-256 (1)
Contains the data necessary to perform the matching. Data e41cc7633029afdba53744d7e5fc31ef507e592de9dfb33557bf3b9a79239446

Analysis

Good
Valid DANE configuration
Excellent. Your DANE configuration matches the certificate chain(s) provided by the service. Your TLS configuration enjoys the additional benefit of DANE validation.

SPF

Sender Policy Framework (SPF) is a protocol that allows domain name owners to control which internet hosts are allowed to send email on their behalf. This simple mechanism can be used to reduce the effect of email spoofing and cut down on spam.

Test passed
Everything seems to be well configured. Well done.

SPF Policy Information Main policy

Host where this policy is located.Location smartfixmarburg.de
SPF version used by this policy.v spf1
Evaluates SPF policy specified in another DNS location. This
directive is typically used to allow hosts controlled by
another organization.
include
mailbox.org
Evaluates SPF policy specified in another DNS location. This
directive is typically used to allow hosts controlled by
another organization.
include
_spf.smtp.com
This policy element always matches. It's normally used
at the end of a policy to specify the handling of hosts
that don't match earlier mechanisms.
~all

Analysis

Info
SPF policy found

Policy text: v=spf1 include:mailbox.org include:_spf.smtp.com ~all

Location: smartfixmarburg.de

Good
SPF policy is valid
Good. Your SPF policy is valid.
Good
Policy DNS lookups under limit
Good. Your policy stays under the limit of up to 10 DNS queries. The SPF specification Section 4.6.4. requires implementations to limit the total number of DNS queries. Policies that exceed the limit should not be used and may not work in practice.

Lookups: 3

SPF Policy Information Included policy

Host where this policy is located.Location mailbox.org
SPF version used by this policy.v spf1
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
213.203.238.0/25
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
195.10.208.0/24
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
91.198.250.0/24
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
80.241.56.0/21
This mechanism tests whether the IP address being
tested is contained within a given IPv6 network.
ip6
2001:67c:2050::/48
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
80.241.60.0/24
This mechanism matches if the sending IP address
is one of the MX hosts for the domain name.
mx
This policy element always matches. It's normally used
at the end of a policy to specify the handling of hosts
that don't match earlier mechanisms.
~all

SPF Policy Information Included policy

Host where this policy is located.Location _spf.smtp.com
SPF version used by this policy.v spf1
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
192.40.160.0/19
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
74.91.80.0/20
This policy element always matches. It's normally used
at the end of a policy to specify the handling of hosts
that don't match earlier mechanisms.
~all

DMARC

Domain-based Message Authentication, Reporting, and Conformance (DMARC) is a scalable mechanism by which a mail-originating organization can express domain-level policies and preferences for message validation, disposition, and reporting, that a mail-receiving organization can use to improve mail handling.

Test passed
Everything seems to be well configured. Well done.

DMARC Policy Information

The location from which we obtained this policy.Policy location _dmarc.smartfixmarburg.de
DMARC version used by this policy.v DMARC1
Indicates the policy to be enacted by the receiver at
the request of the domain owner. Possible values are:
none, quarantine, and reject.
p
reject
Percentage of messages from mail stream to
which the DMARC policy is to be applied.
pct
100
Addresses to which aggregate feedback is to be sent.rua mailto:re+udpvhnfoskd@dmarc.postmarkapp.com

Analysis

Info
DMARC policy found

Policy: v=DMARC1; p=reject; pct=100; rua=mailto:re+udpvhnfoskd@dmarc.postmarkapp.com;

Host: _dmarc.smartfixmarburg.de

Good
Valid external destination

Permission record location: smartfixmarburg.de._report._dmarc.dmarc.postmarkapp.com

External destination: mailto:re+udpvhnfoskd@dmarc.postmarkapp.com

Permission record contents: v=DMARC1;

Good
Policy is valid
Good. You have a valid DMARC policy.

MTA Strict Transport Security

SMTP Mail Transfer Agent Strict Transport Security (MTA-STS) is a mechanism enabling mail service providers to declare their ability to receive Transport Layer Security (TLS) secure SMTP connections, and to specify whether sending SMTP servers should refuse to deliver to MX hosts that do not offer TLS with a trusted server certificate.

Feature not applicable, not implemented, or disabled
Your server doesn't support this feature.

SMTP TLS Reporting

SMTP TLS Reporting (RFC 8460), or TLS-RPT for short, describes a reporting mechanism and format by which systems sending email can share statistics and specific information about potential failures with recipient domains. Recipient domains can then use this information to both detect potential attacks and diagnose unintentional misconfigurations. TLS-RPT can be used with DANE or MTA-STS.

Feature not applicable, not implemented, or disabled
Your server doesn't support this feature.

HTTP (80)

To observe your HTTP implementation, we submit a request to the homepage of your site on port 80, follow all redirections (even when they take us to other domain names), and record the returned HTTP headers.

Test passed
Everything seems to be well configured. Well done.

URL: http://smartfixmarburg.de/

1
http://smartfixmarburg.de/
HTTP/1.1 301 Moved Permanently
2
https://smartfixmarburg.de/
HTTP/1.1 200 OK

Analysis

Powerup!
Information leakage in HTTP response header
A HTTP response provided by this server includes a server that reveals potentially sensitive information about the software running on it. There is no reason why this information should be provided to the public and we recommend that it is removed.

Header value: PHP/7.4.27

Header name: x-powered-by

Good
HTTP redirects to HTTPS
Good. This plaintext HTTP server redirects to HTTPS.

URL: http://www.smartfixmarburg.de/

1
http://www.smartfixmarburg.de/
HTTP/1.1 301 Moved Permanently
2
https://www.smartfixmarburg.de/
HTTP/1.1 301 Moved Permanently
3
https://smartfixmarburg.de/
HTTP/1.1 200 OK

Analysis

Powerup!
Information leakage in HTTP response header
A HTTP response provided by this server includes a server that reveals potentially sensitive information about the software running on it. There is no reason why this information should be provided to the public and we recommend that it is removed.

Header value: PHP/7.4.27

Header name: x-powered-by

Good
HTTP redirects to HTTPS
Good. This plaintext HTTP server redirects to HTTPS.

HTTP (443)

To observe your HTTPS implementation, we submit a request to the homepage of your site on port 443, follow all redirections (even when they take us to other domain names), and record the returned HTTP headers. We use the most recent set of headers returned from the tested hostname for further tests such as HSTS and HPKP.

Test passed
Everything seems to be well configured. Well done.

URL: https://smartfixmarburg.de/

1
https://smartfixmarburg.de/
HTTP/1.1 200 OK

Analysis

Powerup!
Information leakage in HTTP response header
A HTTP response provided by this server includes a server that reveals potentially sensitive information about the software running on it. There is no reason why this information should be provided to the public and we recommend that it is removed.

Header value: PHP/7.4.27

Header name: x-powered-by

URL: https://www.smartfixmarburg.de/

1
https://www.smartfixmarburg.de/
HTTP/1.1 301 Moved Permanently
2
https://smartfixmarburg.de/
HTTP/1.1 200 OK

Analysis

Powerup!
Information leakage in HTTP response header
A HTTP response provided by this server includes a server that reveals potentially sensitive information about the software running on it. There is no reason why this information should be provided to the public and we recommend that it is removed.

Header value: PHP/7.4.27

Header name: x-powered-by

WWW TLS

Transport Layer Security (TLS) is the most widely used encryption protocol on the Internet. In combination with valid certificates, servers can establish trusted communication channels even with users who have never visited them before. Network attackers can't uncover what is being communicated, even when they can see all the traffic.

Test passed
Everything seems to be well configured. Well done.

TLS Configuration: www.smartfixmarburg.de (2606:4700:3035:0:0:0:6815:55f3)

Encryption protocol version determines what features are
available for negotiation between client and server.
Supported protocols
TLS v1.3
TLS v1.2
Servers should always enforce their own cipher
suite preference, as that is the only approach
that guarantees that the best possible suite is
selected.
Server suite preference
Shows cipher suite configuration for this protocol version.TLS v1.3
Server preference
Suite: TLS_CHACHA20_POLY1305_SHA256
Suite ID: 0x1303
Cipher name: CHACHA20
Cipher strength: 256 bits
Cipher mode: AEAD
Key exchange: ecdh_x25519
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_CHACHA20_POLY1305_SHA256
 256 bits (ECDHE 256 bits)
Suite: TLS_AES_128_GCM_SHA256
Suite ID: 0x1301
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ecdh_x25519
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_AES_128_GCM_SHA256
 128 bits (ECDHE 256 bits)
Suite: TLS_AES_256_GCM_SHA384
Suite ID: 0x1302
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ecdh_x25519
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA384
TLS_AES_256_GCM_SHA384
 256 bits (ECDHE 256 bits)
Shows cipher suite configuration for this protocol version.TLS v1.2
Server preference
Suite: AGL_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
Suite ID: 0xcc13
Cipher name: CHACHA20
Cipher strength: 256 bits
Cipher mode: AEAD
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA256
AGL_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
 256 bits (ECDHE 256 bits)
Suite: TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
Suite ID: 0xcca8
Cipher name: CHACHA20
Cipher strength: 256 bits
Cipher mode: AEAD
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
 256 bits (ECDHE 256 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
Suite ID: 0xc02f
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
 128 bits (ECDHE 256 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0xc013
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
 128 bits (ECDHE 256 bits)
Suite: TLS_RSA_WITH_AES_128_GCM_SHA256
Suite ID: 0x9c
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: RSA
Key exchange strength: 2048 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_128_GCM_SHA256
 128 bits
Suite: TLS_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0x2f
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 2048 bits
Forward secrecy: No (WEAK)
PRF: SHA
TLS_RSA_WITH_AES_128_CBC_SHA
 128 bits
Suite: TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
Suite ID: 0xc030
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA384
TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
 256 bits (ECDHE 256 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0xc014
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
 256 bits (ECDHE 256 bits)
Suite: TLS_RSA_WITH_AES_256_GCM_SHA384
Suite ID: 0x9d
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: RSA
Key exchange strength: 2048 bits
Forward secrecy: No (WEAK)
PRF: SHA384
TLS_RSA_WITH_AES_256_GCM_SHA384
 256 bits
Suite: TLS_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0x35
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 2048 bits
Forward secrecy: No (WEAK)
PRF: SHA
TLS_RSA_WITH_AES_256_CBC_SHA
 256 bits
Suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256
Suite ID: 0xc027
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256
 128 bits (ECDHE 256 bits)
Suite: TLS_RSA_WITH_AES_128_CBC_SHA256
Suite ID: 0x3c
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 2048 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_128_CBC_SHA256
 128 bits
Suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
Suite ID: 0xc028
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA384
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
 256 bits (ECDHE 256 bits)
Suite: TLS_RSA_WITH_AES_256_CBC_SHA256
Suite ID: 0x3d
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 2048 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_256_CBC_SHA256
 256 bits

Analysis

Good
TLS 1.3 supported
Excellent. This server supports TLS 1.3, which is the latest revision of the TLS protocol and a significant improvement over earlier versions. Developed over a period of several years and extensively analyzed prior to the release, TLS 1.3 removed insecure features, and improved both security and performance.
Good
TLS 1.2 supported
Good. This server supports TLS 1.2, which can provide strong security when configured correctly. This version of the TLS protocol is necessary to provide good security with a wide range of clients that don't yet support TLS 1.3.
Good
Deprecated protocols not supported
Excellent. This server doesn't support any of the deprecated protocol (TLS 1.1 and earlier).
Good
Strong key exchange detected
Excellent. All cipher suites on this server rely on strong key exchange. The sweet spot is 2048 bits for DHE and 256 bits for ECDHE. Putting ECDHE suites first guarantees best security and best performance.
Good
Server prefers forward secrecy and authenticated encryption suites
Excellent. Not only does this server enforce its server preference, but it also has at the top of the list suites that support both forward secrecy and authenticated encryption. This is the best TLS 1.2 can offer.
Good
Server enforces cipher suite preferences
Excellent. This server enforces server cipher suite preference, which means that it is able to select the best suite from the options submitted by clients. Combined with a well designed list of supported cipher suites, this settings enables negotiation of best security.
Good
All TLS connections with this server satisfy Apple's CT requirements
All TLS connections established with this server satisfy Chrome's CT requirements, using certificate, TLS extension, or OCSP response as SCT transport method.

SCT transports: CERT

Good
All TLS connections with this server satisfy Chrome's CT requirements
All TLS connections established with this server satisfy Chrome's CT requirements, using certificate, TLS extension, or OCSP response as SCT transport method.

SCT transports: CERT

Notice
DHE suites not supported
This server doesn't support the Diffie-Hellman (DH) key exchange.

TLS Configuration: smartfixmarburg.de (2606:4700:3030:0:0:0:ac43:d48c)

Encryption protocol version determines what features are
available for negotiation between client and server.
Supported protocols
TLS v1.3
TLS v1.2
Servers should always enforce their own cipher
suite preference, as that is the only approach
that guarantees that the best possible suite is
selected.
Server suite preference
Shows cipher suite configuration for this protocol version.TLS v1.3
Server preference
Suite: TLS_CHACHA20_POLY1305_SHA256
Suite ID: 0x1303
Cipher name: CHACHA20
Cipher strength: 256 bits
Cipher mode: AEAD
Key exchange: ecdh_x25519
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_CHACHA20_POLY1305_SHA256
 256 bits (ECDHE 256 bits)
Suite: TLS_AES_128_GCM_SHA256
Suite ID: 0x1301
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ecdh_x25519
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_AES_128_GCM_SHA256
 128 bits (ECDHE 256 bits)
Suite: TLS_AES_256_GCM_SHA384
Suite ID: 0x1302
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ecdh_x25519
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA384
TLS_AES_256_GCM_SHA384
 256 bits (ECDHE 256 bits)
Shows cipher suite configuration for this protocol version.TLS v1.2
Server preference
Suite: AGL_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
Suite ID: 0xcc13
Cipher name: CHACHA20
Cipher strength: 256 bits
Cipher mode: AEAD
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA256
AGL_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
 256 bits (ECDHE 256 bits)
Suite: TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
Suite ID: 0xcca8
Cipher name: CHACHA20
Cipher strength: 256 bits
Cipher mode: AEAD
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
 256 bits (ECDHE 256 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
Suite ID: 0xc02f
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
 128 bits (ECDHE 256 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0xc013
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
 128 bits (ECDHE 256 bits)
Suite: TLS_RSA_WITH_AES_128_GCM_SHA256
Suite ID: 0x9c
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: RSA
Key exchange strength: 2048 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_128_GCM_SHA256
 128 bits
Suite: TLS_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0x2f
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 2048 bits
Forward secrecy: No (WEAK)
PRF: SHA
TLS_RSA_WITH_AES_128_CBC_SHA
 128 bits
Suite: TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
Suite ID: 0xc030
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA384
TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
 256 bits (ECDHE 256 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0xc014
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
 256 bits (ECDHE 256 bits)
Suite: TLS_RSA_WITH_AES_256_GCM_SHA384
Suite ID: 0x9d
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: RSA
Key exchange strength: 2048 bits
Forward secrecy: No (WEAK)
PRF: SHA384
TLS_RSA_WITH_AES_256_GCM_SHA384
 256 bits
Suite: TLS_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0x35
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 2048 bits
Forward secrecy: No (WEAK)
PRF: SHA
TLS_RSA_WITH_AES_256_CBC_SHA
 256 bits
Suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256
Suite ID: 0xc027
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256
 128 bits (ECDHE 256 bits)
Suite: TLS_RSA_WITH_AES_128_CBC_SHA256
Suite ID: 0x3c
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 2048 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_128_CBC_SHA256
 128 bits
Suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
Suite ID: 0xc028
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA384
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
 256 bits (ECDHE 256 bits)
Suite: TLS_RSA_WITH_AES_256_CBC_SHA256
Suite ID: 0x3d
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 2048 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_256_CBC_SHA256
 256 bits

Analysis

Good
TLS 1.3 supported
Excellent. This server supports TLS 1.3, which is the latest revision of the TLS protocol and a significant improvement over earlier versions. Developed over a period of several years and extensively analyzed prior to the release, TLS 1.3 removed insecure features, and improved both security and performance.
Good
TLS 1.2 supported
Good. This server supports TLS 1.2, which can provide strong security when configured correctly. This version of the TLS protocol is necessary to provide good security with a wide range of clients that don't yet support TLS 1.3.
Good
Deprecated protocols not supported
Excellent. This server doesn't support any of the deprecated protocol (TLS 1.1 and earlier).
Good
Strong key exchange detected
Excellent. All cipher suites on this server rely on strong key exchange. The sweet spot is 2048 bits for DHE and 256 bits for ECDHE. Putting ECDHE suites first guarantees best security and best performance.
Good
Server prefers forward secrecy and authenticated encryption suites
Excellent. Not only does this server enforce its server preference, but it also has at the top of the list suites that support both forward secrecy and authenticated encryption. This is the best TLS 1.2 can offer.
Good
Server enforces cipher suite preferences
Excellent. This server enforces server cipher suite preference, which means that it is able to select the best suite from the options submitted by clients. Combined with a well designed list of supported cipher suites, this settings enables negotiation of best security.
Good
All TLS connections with this server satisfy Apple's CT requirements
All TLS connections established with this server satisfy Chrome's CT requirements, using certificate, TLS extension, or OCSP response as SCT transport method.

SCT transports: CERT

Good
All TLS connections with this server satisfy Chrome's CT requirements
All TLS connections established with this server satisfy Chrome's CT requirements, using certificate, TLS extension, or OCSP response as SCT transport method.

SCT transports: CERT

Notice
DHE suites not supported
This server doesn't support the Diffie-Hellman (DH) key exchange.

TLS Configuration: www.smartfixmarburg.de (2606:4700:3030:0:0:0:ac43:d48c)

Encryption protocol version determines what features are
available for negotiation between client and server.
Supported protocols
TLS v1.3
TLS v1.2
Servers should always enforce their own cipher
suite preference, as that is the only approach
that guarantees that the best possible suite is
selected.
Server suite preference
Shows cipher suite configuration for this protocol version.TLS v1.3
Server preference
Suite: TLS_CHACHA20_POLY1305_SHA256
Suite ID: 0x1303
Cipher name: CHACHA20
Cipher strength: 256 bits
Cipher mode: AEAD
Key exchange: ecdh_x25519
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_CHACHA20_POLY1305_SHA256
 256 bits (ECDHE 256 bits)
Suite: TLS_AES_128_GCM_SHA256
Suite ID: 0x1301
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ecdh_x25519
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_AES_128_GCM_SHA256
 128 bits (ECDHE 256 bits)
Suite: TLS_AES_256_GCM_SHA384
Suite ID: 0x1302
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ecdh_x25519
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA384
TLS_AES_256_GCM_SHA384
 256 bits (ECDHE 256 bits)
Shows cipher suite configuration for this protocol version.TLS v1.2
Server preference
Suite: AGL_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
Suite ID: 0xcc13
Cipher name: CHACHA20
Cipher strength: 256 bits
Cipher mode: AEAD
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA256
AGL_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
 256 bits (ECDHE 256 bits)
Suite: TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
Suite ID: 0xcca8
Cipher name: CHACHA20
Cipher strength: 256 bits
Cipher mode: AEAD
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
 256 bits (ECDHE 256 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
Suite ID: 0xc02f
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
 128 bits (ECDHE 256 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0xc013
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
 128 bits (ECDHE 256 bits)
Suite: TLS_RSA_WITH_AES_128_GCM_SHA256
Suite ID: 0x9c
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: RSA
Key exchange strength: 2048 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_128_GCM_SHA256
 128 bits
Suite: TLS_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0x2f
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 2048 bits
Forward secrecy: No (WEAK)
PRF: SHA
TLS_RSA_WITH_AES_128_CBC_SHA
 128 bits
Suite: TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
Suite ID: 0xc030
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA384
TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
 256 bits (ECDHE 256 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0xc014
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
 256 bits (ECDHE 256 bits)
Suite: TLS_RSA_WITH_AES_256_GCM_SHA384
Suite ID: 0x9d
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: RSA
Key exchange strength: 2048 bits
Forward secrecy: No (WEAK)
PRF: SHA384
TLS_RSA_WITH_AES_256_GCM_SHA384
 256 bits
Suite: TLS_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0x35
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 2048 bits
Forward secrecy: No (WEAK)
PRF: SHA
TLS_RSA_WITH_AES_256_CBC_SHA
 256 bits
Suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256
Suite ID: 0xc027
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256
 128 bits (ECDHE 256 bits)
Suite: TLS_RSA_WITH_AES_128_CBC_SHA256
Suite ID: 0x3c
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 2048 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_128_CBC_SHA256
 128 bits
Suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
Suite ID: 0xc028
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA384
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
 256 bits (ECDHE 256 bits)
Suite: TLS_RSA_WITH_AES_256_CBC_SHA256
Suite ID: 0x3d
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 2048 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_256_CBC_SHA256
 256 bits

Analysis

Good
TLS 1.3 supported
Excellent. This server supports TLS 1.3, which is the latest revision of the TLS protocol and a significant improvement over earlier versions. Developed over a period of several years and extensively analyzed prior to the release, TLS 1.3 removed insecure features, and improved both security and performance.
Good
TLS 1.2 supported
Good. This server supports TLS 1.2, which can provide strong security when configured correctly. This version of the TLS protocol is necessary to provide good security with a wide range of clients that don't yet support TLS 1.3.
Good
Deprecated protocols not supported
Excellent. This server doesn't support any of the deprecated protocol (TLS 1.1 and earlier).
Good
Strong key exchange detected
Excellent. All cipher suites on this server rely on strong key exchange. The sweet spot is 2048 bits for DHE and 256 bits for ECDHE. Putting ECDHE suites first guarantees best security and best performance.
Good
Server prefers forward secrecy and authenticated encryption suites
Excellent. Not only does this server enforce its server preference, but it also has at the top of the list suites that support both forward secrecy and authenticated encryption. This is the best TLS 1.2 can offer.
Good
Server enforces cipher suite preferences
Excellent. This server enforces server cipher suite preference, which means that it is able to select the best suite from the options submitted by clients. Combined with a well designed list of supported cipher suites, this settings enables negotiation of best security.
Good
All TLS connections with this server satisfy Apple's CT requirements
All TLS connections established with this server satisfy Chrome's CT requirements, using certificate, TLS extension, or OCSP response as SCT transport method.

SCT transports: CERT

Good
All TLS connections with this server satisfy Chrome's CT requirements
All TLS connections established with this server satisfy Chrome's CT requirements, using certificate, TLS extension, or OCSP response as SCT transport method.

SCT transports: CERT

Notice
DHE suites not supported
This server doesn't support the Diffie-Hellman (DH) key exchange.

TLS Configuration: smartfixmarburg.de (2606:4700:3035:0:0:0:6815:55f3)

Encryption protocol version determines what features are
available for negotiation between client and server.
Supported protocols
TLS v1.3
TLS v1.2
Servers should always enforce their own cipher
suite preference, as that is the only approach
that guarantees that the best possible suite is
selected.
Server suite preference
Shows cipher suite configuration for this protocol version.TLS v1.3
Server preference
Suite: TLS_CHACHA20_POLY1305_SHA256
Suite ID: 0x1303
Cipher name: CHACHA20
Cipher strength: 256 bits
Cipher mode: AEAD
Key exchange: ecdh_x25519
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_CHACHA20_POLY1305_SHA256
 256 bits (ECDHE 256 bits)
Suite: TLS_AES_128_GCM_SHA256
Suite ID: 0x1301
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ecdh_x25519
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_AES_128_GCM_SHA256
 128 bits (ECDHE 256 bits)
Suite: TLS_AES_256_GCM_SHA384
Suite ID: 0x1302
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ecdh_x25519
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA384
TLS_AES_256_GCM_SHA384
 256 bits (ECDHE 256 bits)
Shows cipher suite configuration for this protocol version.TLS v1.2
Server preference
Suite: AGL_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
Suite ID: 0xcc13
Cipher name: CHACHA20
Cipher strength: 256 bits
Cipher mode: AEAD
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA256
AGL_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
 256 bits (ECDHE 256 bits)
Suite: TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
Suite ID: 0xcca8
Cipher name: CHACHA20
Cipher strength: 256 bits
Cipher mode: AEAD
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
 256 bits (ECDHE 256 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
Suite ID: 0xc02f
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
 128 bits (ECDHE 256 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0xc013
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
 128 bits (ECDHE 256 bits)
Suite: TLS_RSA_WITH_AES_128_GCM_SHA256
Suite ID: 0x9c
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: RSA
Key exchange strength: 2048 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_128_GCM_SHA256
 128 bits
Suite: TLS_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0x2f
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 2048 bits
Forward secrecy: No (WEAK)
PRF: SHA
TLS_RSA_WITH_AES_128_CBC_SHA
 128 bits
Suite: TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
Suite ID: 0xc030
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA384
TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
 256 bits (ECDHE 256 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0xc014
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
 256 bits (ECDHE 256 bits)
Suite: TLS_RSA_WITH_AES_256_GCM_SHA384
Suite ID: 0x9d
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: RSA
Key exchange strength: 2048 bits
Forward secrecy: No (WEAK)
PRF: SHA384
TLS_RSA_WITH_AES_256_GCM_SHA384
 256 bits
Suite: TLS_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0x35
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 2048 bits
Forward secrecy: No (WEAK)
PRF: SHA
TLS_RSA_WITH_AES_256_CBC_SHA
 256 bits
Suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256
Suite ID: 0xc027
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256
 128 bits (ECDHE 256 bits)
Suite: TLS_RSA_WITH_AES_128_CBC_SHA256
Suite ID: 0x3c
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 2048 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_128_CBC_SHA256
 128 bits
Suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
Suite ID: 0xc028
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA384
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
 256 bits (ECDHE 256 bits)
Suite: TLS_RSA_WITH_AES_256_CBC_SHA256
Suite ID: 0x3d
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 2048 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_256_CBC_SHA256
 256 bits

Analysis

Good
TLS 1.3 supported
Excellent. This server supports TLS 1.3, which is the latest revision of the TLS protocol and a significant improvement over earlier versions. Developed over a period of several years and extensively analyzed prior to the release, TLS 1.3 removed insecure features, and improved both security and performance.
Good
TLS 1.2 supported
Good. This server supports TLS 1.2, which can provide strong security when configured correctly. This version of the TLS protocol is necessary to provide good security with a wide range of clients that don't yet support TLS 1.3.
Good
Deprecated protocols not supported
Excellent. This server doesn't support any of the deprecated protocol (TLS 1.1 and earlier).
Good
Strong key exchange detected
Excellent. All cipher suites on this server rely on strong key exchange. The sweet spot is 2048 bits for DHE and 256 bits for ECDHE. Putting ECDHE suites first guarantees best security and best performance.
Good
Server prefers forward secrecy and authenticated encryption suites
Excellent. Not only does this server enforce its server preference, but it also has at the top of the list suites that support both forward secrecy and authenticated encryption. This is the best TLS 1.2 can offer.
Good
Server enforces cipher suite preferences
Excellent. This server enforces server cipher suite preference, which means that it is able to select the best suite from the options submitted by clients. Combined with a well designed list of supported cipher suites, this settings enables negotiation of best security.
Good
All TLS connections with this server satisfy Apple's CT requirements
All TLS connections established with this server satisfy Chrome's CT requirements, using certificate, TLS extension, or OCSP response as SCT transport method.

SCT transports: CERT

Good
All TLS connections with this server satisfy Chrome's CT requirements
All TLS connections established with this server satisfy Chrome's CT requirements, using certificate, TLS extension, or OCSP response as SCT transport method.

SCT transports: CERT

Notice
DHE suites not supported
This server doesn't support the Diffie-Hellman (DH) key exchange.

TLS Configuration: www.smartfixmarburg.de (172.67.212.140)

Encryption protocol version determines what features are
available for negotiation between client and server.
Supported protocols
TLS v1.3
TLS v1.2
Servers should always enforce their own cipher
suite preference, as that is the only approach
that guarantees that the best possible suite is
selected.
Server suite preference
Shows cipher suite configuration for this protocol version.TLS v1.3
Server preference
Suite: TLS_CHACHA20_POLY1305_SHA256
Suite ID: 0x1303
Cipher name: CHACHA20
Cipher strength: 256 bits
Cipher mode: AEAD
Key exchange: ecdh_x25519
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_CHACHA20_POLY1305_SHA256
 256 bits (ECDHE 256 bits)
Suite: TLS_AES_128_GCM_SHA256
Suite ID: 0x1301
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ecdh_x25519
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_AES_128_GCM_SHA256
 128 bits (ECDHE 256 bits)
Suite: TLS_AES_256_GCM_SHA384
Suite ID: 0x1302
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ecdh_x25519
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA384
TLS_AES_256_GCM_SHA384
 256 bits (ECDHE 256 bits)
Shows cipher suite configuration for this protocol version.TLS v1.2
Server preference
Suite: AGL_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
Suite ID: 0xcc13
Cipher name: CHACHA20
Cipher strength: 256 bits
Cipher mode: AEAD
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA256
AGL_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
 256 bits (ECDHE 256 bits)
Suite: TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
Suite ID: 0xcca8
Cipher name: CHACHA20
Cipher strength: 256 bits
Cipher mode: AEAD
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
 256 bits (ECDHE 256 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
Suite ID: 0xc02f
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
 128 bits (ECDHE 256 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0xc013
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
 128 bits (ECDHE 256 bits)
Suite: TLS_RSA_WITH_AES_128_GCM_SHA256
Suite ID: 0x9c
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: RSA
Key exchange strength: 2048 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_128_GCM_SHA256
 128 bits
Suite: TLS_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0x2f
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 2048 bits
Forward secrecy: No (WEAK)
PRF: SHA
TLS_RSA_WITH_AES_128_CBC_SHA
 128 bits
Suite: TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
Suite ID: 0xc030
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA384
TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
 256 bits (ECDHE 256 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0xc014
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
 256 bits (ECDHE 256 bits)
Suite: TLS_RSA_WITH_AES_256_GCM_SHA384
Suite ID: 0x9d
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: RSA
Key exchange strength: 2048 bits
Forward secrecy: No (WEAK)
PRF: SHA384
TLS_RSA_WITH_AES_256_GCM_SHA384
 256 bits
Suite: TLS_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0x35
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 2048 bits
Forward secrecy: No (WEAK)
PRF: SHA
TLS_RSA_WITH_AES_256_CBC_SHA
 256 bits
Suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256
Suite ID: 0xc027
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256
 128 bits (ECDHE 256 bits)
Suite: TLS_RSA_WITH_AES_128_CBC_SHA256
Suite ID: 0x3c
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 2048 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_128_CBC_SHA256
 128 bits
Suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
Suite ID: 0xc028
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA384
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
 256 bits (ECDHE 256 bits)
Suite: TLS_RSA_WITH_AES_256_CBC_SHA256
Suite ID: 0x3d
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 2048 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_256_CBC_SHA256
 256 bits

Analysis

Good
TLS 1.3 supported
Excellent. This server supports TLS 1.3, which is the latest revision of the TLS protocol and a significant improvement over earlier versions. Developed over a period of several years and extensively analyzed prior to the release, TLS 1.3 removed insecure features, and improved both security and performance.
Good
TLS 1.2 supported
Good. This server supports TLS 1.2, which can provide strong security when configured correctly. This version of the TLS protocol is necessary to provide good security with a wide range of clients that don't yet support TLS 1.3.
Good
Deprecated protocols not supported
Excellent. This server doesn't support any of the deprecated protocol (TLS 1.1 and earlier).
Good
Strong key exchange detected
Excellent. All cipher suites on this server rely on strong key exchange. The sweet spot is 2048 bits for DHE and 256 bits for ECDHE. Putting ECDHE suites first guarantees best security and best performance.
Good
Server prefers forward secrecy and authenticated encryption suites
Excellent. Not only does this server enforce its server preference, but it also has at the top of the list suites that support both forward secrecy and authenticated encryption. This is the best TLS 1.2 can offer.
Good
Server enforces cipher suite preferences
Excellent. This server enforces server cipher suite preference, which means that it is able to select the best suite from the options submitted by clients. Combined with a well designed list of supported cipher suites, this settings enables negotiation of best security.
Good
All TLS connections with this server satisfy Apple's CT requirements
All TLS connections established with this server satisfy Chrome's CT requirements, using certificate, TLS extension, or OCSP response as SCT transport method.

SCT transports: CERT

Good
All TLS connections with this server satisfy Chrome's CT requirements
All TLS connections established with this server satisfy Chrome's CT requirements, using certificate, TLS extension, or OCSP response as SCT transport method.

SCT transports: CERT

Notice
DHE suites not supported
This server doesn't support the Diffie-Hellman (DH) key exchange.

TLS Configuration: smartfixmarburg.de (104.21.85.243)

Encryption protocol version determines what features are
available for negotiation between client and server.
Supported protocols
TLS v1.3
TLS v1.2
Servers should always enforce their own cipher
suite preference, as that is the only approach
that guarantees that the best possible suite is
selected.
Server suite preference
Shows cipher suite configuration for this protocol version.TLS v1.3
Server preference
Suite: TLS_CHACHA20_POLY1305_SHA256
Suite ID: 0x1303
Cipher name: CHACHA20
Cipher strength: 256 bits
Cipher mode: AEAD
Key exchange: ecdh_x25519
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_CHACHA20_POLY1305_SHA256
 256 bits (ECDHE 256 bits)
Suite: TLS_AES_128_GCM_SHA256
Suite ID: 0x1301
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ecdh_x25519
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_AES_128_GCM_SHA256
 128 bits (ECDHE 256 bits)
Suite: TLS_AES_256_GCM_SHA384
Suite ID: 0x1302
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ecdh_x25519
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA384
TLS_AES_256_GCM_SHA384
 256 bits (ECDHE 256 bits)
Shows cipher suite configuration for this protocol version.TLS v1.2
Server preference
Suite: AGL_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
Suite ID: 0xcc13
Cipher name: CHACHA20
Cipher strength: 256 bits
Cipher mode: AEAD
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA256
AGL_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
 256 bits (ECDHE 256 bits)
Suite: TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
Suite ID: 0xcca8
Cipher name: CHACHA20
Cipher strength: 256 bits
Cipher mode: AEAD
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
 256 bits (ECDHE 256 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
Suite ID: 0xc02f
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
 128 bits (ECDHE 256 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0xc013
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
 128 bits (ECDHE 256 bits)
Suite: TLS_RSA_WITH_AES_128_GCM_SHA256
Suite ID: 0x9c
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: RSA
Key exchange strength: 2048 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_128_GCM_SHA256
 128 bits
Suite: TLS_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0x2f
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 2048 bits
Forward secrecy: No (WEAK)
PRF: SHA
TLS_RSA_WITH_AES_128_CBC_SHA
 128 bits
Suite: TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
Suite ID: 0xc030
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA384
TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
 256 bits (ECDHE 256 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0xc014
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
 256 bits (ECDHE 256 bits)
Suite: TLS_RSA_WITH_AES_256_GCM_SHA384
Suite ID: 0x9d
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: RSA
Key exchange strength: 2048 bits
Forward secrecy: No (WEAK)
PRF: SHA384
TLS_RSA_WITH_AES_256_GCM_SHA384
 256 bits
Suite: TLS_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0x35
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 2048 bits
Forward secrecy: No (WEAK)
PRF: SHA
TLS_RSA_WITH_AES_256_CBC_SHA
 256 bits
Suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256
Suite ID: 0xc027
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256
 128 bits (ECDHE 256 bits)
Suite: TLS_RSA_WITH_AES_128_CBC_SHA256
Suite ID: 0x3c
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 2048 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_128_CBC_SHA256
 128 bits
Suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
Suite ID: 0xc028
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA384
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
 256 bits (ECDHE 256 bits)
Suite: TLS_RSA_WITH_AES_256_CBC_SHA256
Suite ID: 0x3d
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 2048 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_256_CBC_SHA256
 256 bits

Analysis

Good
TLS 1.3 supported
Excellent. This server supports TLS 1.3, which is the latest revision of the TLS protocol and a significant improvement over earlier versions. Developed over a period of several years and extensively analyzed prior to the release, TLS 1.3 removed insecure features, and improved both security and performance.
Good
TLS 1.2 supported
Good. This server supports TLS 1.2, which can provide strong security when configured correctly. This version of the TLS protocol is necessary to provide good security with a wide range of clients that don't yet support TLS 1.3.
Good
Deprecated protocols not supported
Excellent. This server doesn't support any of the deprecated protocol (TLS 1.1 and earlier).
Good
Strong key exchange detected
Excellent. All cipher suites on this server rely on strong key exchange. The sweet spot is 2048 bits for DHE and 256 bits for ECDHE. Putting ECDHE suites first guarantees best security and best performance.
Good
Server prefers forward secrecy and authenticated encryption suites
Excellent. Not only does this server enforce its server preference, but it also has at the top of the list suites that support both forward secrecy and authenticated encryption. This is the best TLS 1.2 can offer.
Good
Server enforces cipher suite preferences
Excellent. This server enforces server cipher suite preference, which means that it is able to select the best suite from the options submitted by clients. Combined with a well designed list of supported cipher suites, this settings enables negotiation of best security.
Good
All TLS connections with this server satisfy Apple's CT requirements
All TLS connections established with this server satisfy Chrome's CT requirements, using certificate, TLS extension, or OCSP response as SCT transport method.

SCT transports: CERT

Good
All TLS connections with this server satisfy Chrome's CT requirements
All TLS connections established with this server satisfy Chrome's CT requirements, using certificate, TLS extension, or OCSP response as SCT transport method.

SCT transports: CERT

Notice
DHE suites not supported
This server doesn't support the Diffie-Hellman (DH) key exchange.

TLS Configuration: www.smartfixmarburg.de (104.21.85.243)

Encryption protocol version determines what features are
available for negotiation between client and server.
Supported protocols
TLS v1.3
TLS v1.2
Servers should always enforce their own cipher
suite preference, as that is the only approach
that guarantees that the best possible suite is
selected.
Server suite preference
Shows cipher suite configuration for this protocol version.TLS v1.3
Server preference
Suite: TLS_CHACHA20_POLY1305_SHA256
Suite ID: 0x1303
Cipher name: CHACHA20
Cipher strength: 256 bits
Cipher mode: AEAD
Key exchange: ecdh_x25519
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_CHACHA20_POLY1305_SHA256
 256 bits (ECDHE 256 bits)
Suite: TLS_AES_128_GCM_SHA256
Suite ID: 0x1301
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ecdh_x25519
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_AES_128_GCM_SHA256
 128 bits (ECDHE 256 bits)
Suite: TLS_AES_256_GCM_SHA384
Suite ID: 0x1302
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ecdh_x25519
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA384
TLS_AES_256_GCM_SHA384
 256 bits (ECDHE 256 bits)
Shows cipher suite configuration for this protocol version.TLS v1.2
Server preference
Suite: AGL_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
Suite ID: 0xcc13
Cipher name: CHACHA20
Cipher strength: 256 bits
Cipher mode: AEAD
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA256
AGL_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
 256 bits (ECDHE 256 bits)
Suite: TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
Suite ID: 0xcca8
Cipher name: CHACHA20
Cipher strength: 256 bits
Cipher mode: AEAD
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
 256 bits (ECDHE 256 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
Suite ID: 0xc02f
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
 128 bits (ECDHE 256 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0xc013
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
 128 bits (ECDHE 256 bits)
Suite: TLS_RSA_WITH_AES_128_GCM_SHA256
Suite ID: 0x9c
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: RSA
Key exchange strength: 2048 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_128_GCM_SHA256
 128 bits
Suite: TLS_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0x2f
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 2048 bits
Forward secrecy: No (WEAK)
PRF: SHA
TLS_RSA_WITH_AES_128_CBC_SHA
 128 bits
Suite: TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
Suite ID: 0xc030
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ECDHE_RSA
Key exchange strength: EC e