Firewall Building

Building a firewall on a Linux system with a 2.6 series kernel involves the Netfilter iptables command. The 2.4 series kernel uses the ipchains command. The configuration of a Linux system’s firewall is often held in a script that is run at system boot. Crafting complex firewall script can take a long time, however there are some software projects to help make creating and managing your Linux firewalls easier.

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