Hi .. Now i may have completely missed the needed info in the tutorials ect for= =20 iptables but i have a problem that is causing me loads of grief. I run one machine as a dial up box for the internet with an internal mode= m =20 and an network card for the rest of the network/house. My dialup is not an static IP it is dynamic , All i have seen so far deal= s=20 with static IP's for the inet connection now i have an system that sort o= f=20 works but is by no means good but i am unable to use my echolinux system=20 (Amature radio over the internet) as this needs ports 5198/5199 udp to be= =20 available and have been totaly unable to persuade iptables to allow these= =20 ports . Can anyone out there help with configuration as i have been trying so mu= ch=20 recently i am now totaly confused . I have dialup inet IF=3Dppp0 when on line=20 internal IF=3Deth0 192.168.10.14 machine that needs udp ports 192.168.10.1 plus all the normal ports . if anyone can assit it would be much appreaceated (SP)=20 Thanks Pete G6NJR=20 A Linux Only Zone