Guarddog is a firewall configuration utility for Linux systems. Guarddog is aimed at two groups of users. Novice to intermediate users who are not experts in TCP/IP networking and security, and those users who don't want the hassle of dealing with cryptic shell scripts and ipchains/iptables parameters.

* Easy to use goal oriented GUI
* Application protocol based
* Hosts/networks can be divided into Zones
* Support for many protocols
* Well documented with tutorials and reference material

See the website for more detail