Hi,

I'd like to use Microsoft's Netmeeting on a Windows box in my private
LAN for communicating with Netmeeting users in the Internet through my
Linux NAT box.

I have patched kernel 2.4.20 for the H.323 modules using netfilter's
patch-o-matic, finally rebooted, loaded the compiled modules
(ip_conntrack_h323 and ip_nat_h323) and configured the DNAT and
forwarding entries in the firewall.

Now I can set up Netmeeting connections with hosts in the Internet, but
only data applications go through (chat, application sharing), no voice,
no video. Both hosts even don't send a single UDP packet for
voice/video, thus I assume that something's wrong with the H.323
negotiation. (How can I check whether the h323 modules are really
performing some action at all?)
Voice/video works fine inside the private LAN.

Any ideas?

Thanks for your assistance,
Steffen