On Sun, 5 Nov 2000, Bruce Lamont wrote:

> NetMeeting uses random ports, so a normal router won't work unless you
> pinhole everything ...

Not really. The H.323 protocol just requires that endpoints be able to
address each other directly, by address. H.323's operation is pretty
complicated - this allows it to do "neat tricks" like switch codecs on the
fly, conference multiple stations, etc.

Only *some* NAT implementations are smart enough to recognise an H.323
conversation and perform the necessary machinations (in the same general
way as a common-or-garden firewall handles a conventional control + data
type FTP connection).

--
Josh Bailey (josh@vandervecken.com - Berkeley CA, USA)
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