Building a Firewall with IP Chains

A quick introduction to the program ipchains.
Final Considerations

Ip chains is a very powerful tool that allows you to create many complex rules in order to protect your network. Just for fun, I built a small C program to build simple firewall scripts and simplify the rc.d process. It is open source and available at Good places to get more information on how to build great scripts are the HOWTOs (see Resources). Read them before you start to build your own firewall scripts.


Pedro Paulo Ferreira Bueno, Science Computer Student from Catholic University of Goias (UCG- Brazil), is the manager of LinuxGO, the Goias Linux User Group and the network card moderator at Linux Knowledge base. He is a maniac linux user since he started with Linux in Kernel 2.0.7 . When he is not in front of his linux machine he is probability playing soccer. He can be reached at