That's too bad. That means all the ADSL folks out there with routers that NAT are unable to use Netmeeting. Netmeeting works through Checkpoint FW1 so I assume it must have an integrated H.323 proxy. Anyone know of a good SIP substitute for Netmeeting on the Windows or Linux platform?
these existing netmeeting NAT implementations are all imcomplete. they may handle simple point-to-point calls with Netmeeting, but when it comes to more complicated matters like multiparty calls or gatekeeper routed calls, most of them just choke. Checkpoint's implementation is probably the most complete, but it is not perfect either.
There is a very simple H323 NAT rewriting module for linux, but only with single call support and in a pre-pre-alpha stage.
H323 was not designed with NAT in mind. SIP, on the other hand, can be very nicely proxied, and once the first working SIP clients are on the market, we will support SIP. [:)]