[SR-Users] Using wildcard certificates for Kamailio server

Leonid Fainshtein leonid.fainshtein at xorcom.com
Thu Aug 6 14:37:51 CEST 2020


Hello,
Is it permitted to use the wildcard TLS certificates for Kamailio server?
In reality, it works (tested with v.5.4) but the RFC-5922 disables the
wildcard certificates usage:

"Implementations MUST match the values in their entirety:

         Implementations MUST NOT match suffixes.  For example,
         "foo.example.com" does not match "example.com".

         Implementations MUST NOT match any form of wildcard, such as a
         leading "." or "*." with any other DNS label or sequence of
         labels.  For example, "*.example.com" matches only
         "*.example.com" but not "foo.example.com".  Similarly,
         ".example.com" matches only ".example.com", and does not match
         "foo.example.com".

(Ref.:https://tools.ietf.org/html/rfc5922#section-7.2)
To be honest, I don't understand why this restriction is good for...
Is somebody aware of a newer RFC that removes this limitation?

Best regards,
Leonid Fainshtein
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