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wrong security warning?

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Visiting this site:

https://www.kulturkritiskforum.dk/

Firefox tells me that the certificate in invalid.

"...Web sites prove their identity via certificates. Firefox does not trust this site because it uses a certificate that is not valid for www.kulturkritiskforum.dk. The certificate is only valid for kulturkritiskforum.dk.

Error code: SSL_ERROR_BAD_CERT_DOMAIN..."

Looking at certificate tells me it is valid, and so does:

https://www.sslshopper.com/ssl-checker.html#hostname=https://www.kulturkritiskforum.dk/

"...www.kulturkritiskforum.dk resolves to 18.197.157.167

Server Type: Apache

The certificate should be trusted by all major web browsers (all the correct intermediate certificates are installed)...."

And Chrome does not report any errors either.

Where is the actual problem/error?!

Visiting this site: https://www.kulturkritiskforum.dk/ Firefox tells me that the certificate in invalid. "...Web sites prove their identity via certificates. Firefox does not trust this site because it uses a certificate that is not valid for www.kulturkritiskforum.dk. The certificate is only valid for kulturkritiskforum.dk. Error code: SSL_ERROR_BAD_CERT_DOMAIN..." Looking at certificate tells me it is valid, and so does: https://www.sslshopper.com/ssl-checker.html#hostname=https://www.kulturkritiskforum.dk/ "...www.kulturkritiskforum.dk resolves to 18.197.157.167 Server Type: Apache The certificate should be trusted by all major web browsers (all the correct intermediate certificates are installed)...." And Chrome does not report any errors either. Where is the actual problem/error?!

Chosen solution

j.martin.pedersen said

https://www.sslshopper.com/ssl-checker.html#hostname=https://www.kulturkritiskforum.dk/ "...www.kulturkritiskforum.dk resolves to 18.197.157.167 Server Type: Apache The certificate should be trusted by all major web browsers (all the correct intermediate certificates are installed)...."

A bit further down on that page I see this:

"None of the common names in the certificate match the name that was entered (www.kulturkritiskforum.dk). You may receive an error when accessing this site in a web browser. Learn more about name mismatch errors."

Read this answer in context 👍 0

All Replies (3)

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When you click the Advanced button, then "View Certificate" on the error page, it list the base domain without www:

Common Name: kulturkritiskforum.dk

Certificates typically have a second entry in the "Subject Alt Names" but this server isn't configured with any additional host names.

So you have to use the base domain in this case:

https://kulturkritiskforum.dk/

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Chosen Solution

j.martin.pedersen said

https://www.sslshopper.com/ssl-checker.html#hostname=https://www.kulturkritiskforum.dk/ "...www.kulturkritiskforum.dk resolves to 18.197.157.167 Server Type: Apache The certificate should be trusted by all major web browsers (all the correct intermediate certificates are installed)...."

A bit further down on that page I see this:

"None of the common names in the certificate match the name that was entered (www.kulturkritiskforum.dk). You may receive an error when accessing this site in a web browser. Learn more about name mismatch errors."