I've a problem, i'm a newbie and i have to configure H.323 protocol in 2 linux box configured as firewall. In this mode 1 ms-windows netmeeting workstation connected via private lan with linux box could be connected between internet with another ms-windows netmeeting workstation connected with other linux box. I read the link to http://www.kfki.hu/~kadlec/sw/netfilter/ but i don't understand how install the patch and how to use the h.323 nat. Could you help me with configuration example. Thank you very much (and sorry for my bad english) Maurizio Li Vigni