[SR-Users] Using wildcard certificates for Kamailio server

[Daniel-Constantin Mierla]

Hello,

I was not aware of this constraint and I used wildcard certificates so
far with Kamailio and all was ok.

If you want to be strict on this RFC, then you can do additional checks
in the config file, because the validation of tls certificate is
performed by libssl and it returns ok for wildcard certificates. There
might be options for libssl to disable wildcard matching, but I haven't
looked for.

Cheers,
Daniel

On 06.08.20 14:37, Leonid Fainshtein wrote:
> 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 <http://foo.example.com>" does not match "example.com <http://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 <http://example.com>" matches only
>          "*.example.com <http://example.com>" but not "foo.example.com <http://foo.example.com>".  Similarly,
>          ".example.com <http://example.com>" matches only ".example.com <http://example.com>", and does not match
>          "foo.example.com <http://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
>
>
> _______________________________________________
> Kamailio (SER) - Users Mailing List
> sr-users at lists.kamailio.org
> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users

-- 
Daniel-Constantin Mierla -- www.asipto.com
www.twitter.com/miconda -- www.linkedin.com/in/miconda
Funding: https://www.paypal.me/dcmierla

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.kamailio.org/pipermail/sr-users/attachments/20200807/c25227f9/attachment.htm>