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Use iChat A/V features with NAT routers that bind SIP
Authored by: denty on Oct 26, '04 01:26:23PM

I thought the same too. But I've seen so many times when my friend (who's not exactly computer illiterate) has managed to call me with his port set to 443 (the SSL equivalent of port 80) but not with it set to the default that I think there's something more to it.

Does anyone know actually what goes on in an iChat connection initiation?

I've done quite a few ad hoc packet sniffing exercises but failed to understand it all. I've not really seen any document that would help me say that any particular network configuration would or would not work. There is the iChat ports and firewalling guide from Apple Knowledgebase but it's not enough.

Does it exist?



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Use iChat A/V features with NAT routers that bind SIP
Authored by: dreness on Oct 27, '04 01:07:53AM

http://tim.geekheim.de/archive/000145.html

Note that the 'third computer telling each of the peers about the IP addresses that are actually used when sending out UDP packets' in the case of iChat AV is snatmap.mac.com.

andre@pimp[~]defaults read com.apple.iChat | grep snat
snatmap = {ip = "snatmap.mac.com"; port = 5678; };

-andre



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