iptables is built on top of netfilter, the packet alteration framework for Linux 2.4.x and 2.6.x. It is a major rewrite of its predecessor ipchains, and is used to control packet filtering, Network Address Translation (masquerading, portforwarding, transparent proxying), and special effects such as packet mangling.
Changes: This release supports all new features of the 2.6.32 kernel, contains manpage updates, and fixes multiple smaller bugs.
Tags: Internet, Security, Networking, Firewalls
Licenses: GPL