[Serusers] [Fwd: [Sip-implementors] TLS certificate question]

[Nils Ohlmeier]

On Monday 10 October 2005 19:54, Klaus Darilion wrote:
> > As it is now, the current tls code does not really allow for
> > flexibility, i would say. How about creating some kind of module that
> > would allow in-depth access to tls functions, such as
> > - tls_verify_peer_cert()
> > - tls_check_from()
> > - tls_check_to()
>
> I agree. We will need this functions. We should also document what the
> current implementation is validating (when authenticating a server
> certificate: which domain is checked against which part of the
> certificate?) ...

Just a note: your are thinking/discussing here about the connection layer. But 
when the script is processed the connection is already established.
So the only thing which you can do in the script is verifying the client 
certificate. As the connection is already established you can only reject the 
request on the SIP layer. And client certificates usually work only in 
proxy-toproxy scenarios, but not for typical UA's.
Server certificate verification can only be handled by a global policy.

  Nils