Le 2013-09-23 15:09, Jan Willamowius a écrit :
> GnuGk currently checks the certificates signature (either against your
> own CA or the public CAs you configure) and can also check if the IP
> the call comes from matches the certificate.

The weak point here is, and has always been, the necessary PKI
infrastructure. Way too complex to set up and maintain.

A way to untie this knot could be to use DANE, a protocol for verifying
TLS certificates using self-published DNSSEC records. No need for a CA.
There is this proposal for SIP, but one could easily imagine an H.323
equivalent:

https://tools.ietf.org/html/draft-johansson-dane-sip-00

Simon

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