Le 2013-09-23 13:25, Hani Mustafa a écrit :
> Most vendors (including aforementioned vendors) have mostly just hoped
> that the entire industry is going to move to SIP and also placed their
> bets there, hoping that all the security problems with H.323
> authentication would go away.

In practice, SIP is just as vulnerable to MitM attacks. Here's a very
good overview:

http://slideshare.net/oej/ietf-poshsipsecurityoej

As long as nobody verifies TLS certificates, I don't see how the
situation can change for either SIP or H.323.

Simon

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