Sylvain BERTRAND said: > Hi everyone, > > I'm the admin for 193.48.225.0/24 and I would like if it were possible > for my users to chat with Messenger 6 (got complaints already). I've > read a few M$ tech notes, and they suggest the use of Port Triggering or > UPnP firewall. AFAIK it would not be a good thing in security terms. Do > any of you know a solution to my problem? So far MSN6/iptables works for me. Filetransfer (and the like) can be a problem. You could try to install a socks5 server and let MSN use it. Once NEC had a free one.. (I still have the old source somewhere if you can't find it.) But that won't solve the problem of webcams. Did you load the H323 contrack-/nat-modules ? About UPnP, I found something at http://linux-igd.sourceforge.net. I think that might be what you're looking for. Gr, Rob