Hello secur-susers :-) I am trying to use SpeakFreely conferencing software from an internal masquedare network connected thorught a SuSE 7.3 box with SuSEFirewall 2 doing routing, masquerading and fw rules... I need to do a proxy for UDP 2074:2076 so packets get forwarded to the internal client 192.168.0.10. Following are the iptables rules I would use: iptables -A PREROUTING -t nat -p udp -i ppp0 --dport 2074 -j DNAT --to 192.168.0 iptables -A PREROUTING -t nat -p udp -i ppp0 --dport 2075 -j DNAT --to 192.168.0 iptables -A PREROUTING -t nat -p udp -i ppp0 --dport 2076 -j DNAT --to 192.168.0 (where ppp0 is the external NIC for the masquerading) I tried to load these rules manually either to place them inside the file /etc/rc.config.d/firewall2-custom.rc.config but all packets get drop and never reach my client... Where should I configure this proxy??? Thanks