Known Problems
There are some errors that we cannot fix properly in the current version. They will be addressed in the next generation version, which is currently being developed.
- No secure protocols supported - if you get this message, but you know that the site supports SSL, wait until the cache expires on its own, then try again, making sure the hostname you enter uses the "www" prefix (e.g., "www.ssllabs.com", not just "ssllabs.com").
- no more data allowed for version 1 certificate - the certificate is invalid; it is declared as version 1, but uses extensions, which were introduced in version 3. Browsers might ignore this problem, but our parser is strict and refuses to proceed. We'll try to find a different parser to avoid this problem.
- Failed to obtain certificate and Internal Error - errors of this type will often be reported for servers that use connection rate limits or block connections in response to unusual traffic. Problems of this type are very difficult to diagnose. If you have access to the server being tested, before reporting a problem to us, please check that there is no rate limiting or IDS in place.
- NetScaler issues - some NetScaler versions appear to reject SSL handshakes that do not include certain suites or handshakes that use a few suites. If the test is failing and there is a NetScaler load balancer in place, that's most likely the reason.
- Unexpected failure - our tests are designed to fail when unusual results are observed. This usually happens when there are multiple TLS servers behind the same IP address. In such cases we can't provide accurate results, which is why we fail.
Common Error Messages
- Connect timed out - server did not respond to our connection request, sometimes before we are dynamically blocked when our tests are detected
- No route to host - unable to reach the server
- Unable to connect to server - failed to connect to the server, it usually happens due to firewall restrictions
- Connection reset - we got disconnected from the server
- Unrecognized SSL message, plaintext connection? - the server responded with plain-text HTTP on HTTPS port
- Received fatal alert: handshake_failure - this is either a faulty SSL server or some other server listening on port 443; if the SSL version of the web site works in your browser, please report this issue to us
- Failed to communicate with the secure server - No secure protocol supported. Possibly this server only supports a draft version of TLS 1.3
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Server Key and Certificate #1
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| Subject |
alphassms.kobil.com
Fingerprint SHA256: c19f212a1a4abb9c2db62a43dc84962ae4462842421b5641a3dc983081c5fe11 Pin SHA256: JyydohZOs+q8RZCHPEc7ZjZ/QjryrxaZ4e580DwgMjk= |
| Common names | alphassms.kobil.com |
| Alternative names | alphassms.kobil.com |
| Serial Number | 02809b9f66148320 |
| Valid from | Thu, 15 Mar 2018 08:40:09 UTC |
| Valid until | Thu, 15 Mar 2046 08:40:09 UTC (expires in 20 years and 6 months) |
| Key | RSA 2048 bits (e 65537) |
| Weak key (Debian) | No |
| Issuer | KOBIL
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| Signature algorithm | SHA256withRSA |
| Extended Validation | No |
| Revocation information |
None |
| DNS CAA | Yes policy host: kobil.com issue: digicert.com flags:0 issuewild: digicert.com flags:0 issue: letsencrypt.org flags:0 issuewild: letsencrypt.org flags:0 |
| Trusted | No NOT TRUSTED
(Why?)
Mozilla Apple Android Java Windows |
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Additional Certificates (if supplied)
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| Certificates provided | 1 (943 bytes) |
| Chain issues | Incomplete |
Certification Paths |
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| No trust paths available Issuer unknown, or intermediate certificate(s) missing. |
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| No trust paths available Issuer unknown, or intermediate certificate(s) missing. |
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| No trust paths available Issuer unknown, or intermediate certificate(s) missing. |
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| No trust paths available Issuer unknown, or intermediate certificate(s) missing. |
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| No trust paths available Issuer unknown, or intermediate certificate(s) missing. |
Why is my certificate not trusted?
There are many reasons why a certificate may not be trusted. The exact problem is indicated on the report card in bright red. The problems fall into three categories:
- Invalid certificate
- Invalid configuration
- Unknown Certificate Authority
1. Invalid certificate
A certificate is invalid if:
- It is used before its activation date
- It is used after its expiry date
- Certificate hostnames don't match the site hostname
- It has been revoked
- It has insecure signature
- It has been blacklisted
2. Invalid configuration
In some cases, the certificate chain does not contain all the necessary certificates to connect the web server certificate to one of the root certificates in our trust store. Less commonly, one of the certificates in the chain (other than the web server certificate) will have expired, and that invalidates the entire chain.
3. Unknown Certificate Authority
In order for trust to be established, we must have the root certificate of the signing Certificate Authority in our trust store. SSL Labs does not maintain its own trust store; instead we use the store maintained by Mozilla.
If we mark a web site as not trusted, that means that the average web user's browser will not trust it either. For certain special groups of users, such web sites can still be secure. For example, if you can securely verify that a self-signed web site is operated by a person you trust, then you can trust that self-signed web site too. Or, if you work for an organisation that manages its own trust, and you have their own root certificate already embedded in your browser. Such special cases do not work for the general public, however, and this is what we indicate on our report card.
4. Interoperability issues
In some rare cases trust cannot be established because of interoperability issues between our code and the code or configuration running on the server. We manually review such cases, but if you encounter such an issue please feel free to contact us. Such problems are very difficult to troubleshoot and you may be able to provide us with information that might help us determine the root cause.
SSL Report v2.4.1