Why don't you try upgrading your kernel to 2.4.20? I know patching the 2.4.20 kernel works indeed, because I have RedHat 8.0 and I compiled a vanila kernel (from kernel.org), applied the H323 patch through the patch-o-matic, enabled the H323 module through the linux menu configuration (the curses enabled one), and recompiled.. Reboot, and you should be able to place calls from a NAT-ed box where Linux is your gateway/firewall... What I cannot do, and what no one here seems to have offered any advice on, is how to get incoming NetMeeting connections to go through NAT and into one of the boxes on the internal LAN.. I tried various command sets that I found on the archives of this list, but to no avail, none of them work. So either I'm doing something wrong, or incoming netmeeting connections are just not possible behind NAT... Martin p.s. One more important thing - patching the RedHat kernel with the Patch-o-Matic H323 patch, does not work. There's some conflicts that do not resolve when patching so the patch fails to apply. Which is why I said to use 2.4.20 vanila... On Wed, 19 Mar 2003, MOUDARIR Mohamed wrote: > Date: Wed, 19 Mar 2003 11:58:46 -0000 > From: MOUDARIR Mohamed <moudarir@xxxxxxxxxxx> > To: netfilter@xxxxxxxxxxxxxxxxxxx > Subject: H323 module installing and copiling prob > > Hi all, > I want to use netmeeting over an iptables firewal version 1.2.3 ( redhat > 7.2, kernel 2.4 ) > I use this command to update iptables : > # cvs -d :pserver:cvs@xxxxxxxxxxxxxxxxxxxxx:/cvspublic login > # cvs -d :pserver:cvs@xxxxxxxxxxxxxxxxxxxxx:/cvspublic co > netfilter/userspace netfilter/patch-o-matic > And to make dependecies : > # cd /usr/src/linux/ > # make dep > And cd ton ~/netfilter/patch-o-matic/ : > ./runme extra > and # ./runme --batch extra/h323-conntrack-nat.patch > After that, i add H323 module to kernel :# make menuconfig > And compile iptables : > # cd ~/netfilter/userspace/ > # make all install [snip] > > Is there any probleme, and how can i delete the old version of iptables. > Thanks. >