[Serusers] STUN server

[Andres]

>It is worse than that. The STUN taxonomy is brittle, there are NATs
>which feature different behaviour than anticipated in RFC3489.
>
>  
>
Right.  There is one we like to call the crap-nat.  This nat changes the 
source UDP port every few seconds.  So once the media flow is 
established it only works for 2-3 seconds until the nat switches to 
another source port.  Needles to say there is absolutely no way to make 
VoIP work unders these conditions.  We encounter one of these every few 
weeks, and the only solution is to have the customer change the NAT 
device he is using.  (these are usually ADSL modems with inbuilt router)

-- 
Andres
Network Admin
http://www.telesip.net