IPChains and Firewalling

Vertigo1 asks: &nbsp "I have a Cable Modem with RoadRunner. I have a Dual Pentium 200 machine (w/two NIC's), running Red Hat 6.0 w/the latest errata updates. I am going to setup a firewall w/ipchains. I have a Citrix (ie Terminal Server) behind the firewall I want to connect to from the Internet and an FTP server also. How do I set up IPChains to forward to the Citrix server (which uses tcp port 1494) and then to an internal FTP server (tcp port 21 and ftp-data). I understand how ipchains works and have read thoroughly the IPChains-HOWTO, but I still cannot connect to the Citrix server from the Internet. Please help!" This is a common misconception. IPChains are good for configuring what gets in and out of your network on a packet level, but this is a redirection problem. Anyone know where you can find a a good port redirection program on the 'net?