Goto the Linux Documentation Project and look up the howto on ipchains or the newer software, iptables.
http://www.linuxdoc.org/HOWTO/Firewall-HOWTO.html


JLK


>Help! i have installed a linux in a box, and configure it as my proxy server.
>
>but i still have to set up the firewall. i need to have a newbies on how to with
>
>firewall......thanks!!!!!!
>
>Junel