nanog mailing list archives

Re: How to Blocking VoIP ( H.323) ?


From: Simon Leinen <simon () limmat switch ch>
Date: Fri, 12 Nov 2004 17:26:01 +0100


Robert Mathews writes:
On Thu, 11 Nov 2004, Alexei Roudnev wrote:
Hmm - just introduce some jitter into your network, and add random
delay to the short packets - and no VoIP in your company -:).

Alexei:

How exactly then would anyone implement this, without screwing-up the
overall performance elements in the network?  :)

Yeah, no jitter for HTTP please (otherwise users will complain when
they tunnel their VoIP traffic over TCP port 80 :-).

Note that Skype already uses TCP port 80 and 443, at least for control
traffic.
-- 
Simon.


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