Why my MSN audio doesn't work behind NAT?

  My linux box running kernel 2.4.18 works as a firewall,  My intranet windows machine can connect outside via NAT provided by Iptable,  both message and video work, but audio doesn't work, why?
I don't see many search result out of this from google, others don't seem to have this problem ...

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When  you use audio MSN tried to make a direct connection to the other client and usually uses your intneral ip address so it dosnt work.
The best fix Ive found is to use squid proxy on the linux box doing your nat and tell MSN your using a proxy then it will connect through that and your audio will work.

Eric_BoAuthor Commented:
I have tried with oops proxy server , didn't work, anything special on squid ?

you need to open h323 port please read this post


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