I work a multi-place wide network with windows clients, firewalling Debian. My problem is to solve pass through the firewall H323 protocol or any other video conferencing uses 3 ports (video,audio,commands) the best way is Netmeeting. I use NAT. I have read the simple NAT doesnt support the H323 protocol. Is there person who can give me the simplest way to solve this problem. I think the one way could be an internal microsoft proxy server what shares internet access between the internal machines and pass the appropriate ports to internal proxy. But I know this is not the best solution. I want to solve this with only Linux. Note I never worked this yet.
Pls. give me the best solution if you have one.