IPv6 NAT

Sat Nov 1 17:55:15 UTC 2003

On Sat, 2003-11-01 at 12:33, Shawn Morris wrote:
> Vonage's SIP implementation is not broken by NAT and in fact Vonage 
> recommends that you purchase a SOHO router that does NAT.

Vonage also has a financial interest in ensuring you're unable to
connect using RTP and SIP to anyone else but them. The NAT router works
great for that. 
SIP server vendors (Cisco and Asterisk for a few) have made workarounds
so that the client can be behind NAT, provided it can only talk via the
SIP proxy on the server, it can't be instructed to talk peer-> peer with
another device via a SIP reinvite.

So put this one in the "Dirty hack that works out in the vendor's favor"
category.
-Paul

-- 
Paul Timmins <paul at timmins.net>