Hi I use following rule for marking irc dcc transfers from my NATed lan. iptables -t mangle -A PREROUTING -p tcp -m helper --helper irc \ -m mark --mark 0 -j MARK --set-mark 1 And this works perfectly when I send a file to somebody, and doesn't when somebody sends something to me. Why? -- Pozdrawiam Marcin mailto:slacklist@xxxxx