gShield is an aggressive, modular, ipchains-based firewall script. Features include: easy configuration through a BSD-style configuration file, optional IPmasq support, TCP-wrapper-like funtionality for service access, and extremely restrictive defaults. It hopes to make administrating a comprehensive firewall easier, as well as offering robust protection while being easy to setup/maintain.
fbc08b39256eb98ccb1d4e8048814726a13e47cee451f9b552afa142e7db97b6