[standards-jig] VoIP, JEP-0065 and UDP?

Joe Hildebrand jhildebrand at jabber.com
Mon Jan 26 06:46:17 UTC 2004

> Right. But you do not need an external proxy for this. Two clients both
> behind NAT can open their NAT each other without the need for a third
> party.
>> That's why services such as ping are possible.
> ping does not use UDP. Ping uses ICMP.
>> So if we take advantage of this behaviour, we can definitely construct
>> a UDP proxy.
> Why a proxy if it is possible with the same technique without it?

Take a look at RFC 3489, STUN.  It describes this approach pretty 

Joe Hildebrand
Denver, CO, USA

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