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Firewall Builder consists of an object-oriented GUI and a set of policy compilers for various firewall platforms .
Firewall Builder, a firewall policy is a set of rules; each rule consists of abstract objects that represent real network objects and services (hosts, routers, firewalls, networks, protocols). Firewall Builder helps users maintain a database of objects and allows policy editing using simple drag- and-drop operations.

Preferences and object databases are stored in XML format. The GUI and policy compilers are completely independent. The GUI requires only minimal changes in order to add support for a new firewall platform even though a new policy compiler must be written. This provides for a consistent abstract model and the same GUI for different firewall platforms. Standardized XML data format opens possibility for many user interfaces and policy compiler implementations, all interchangeable.

We have policy compilers for the popular free firewalls iptables [url=http://www.iptables.org/]http://www.iptables.org/[/url] , ipfilter [url=http://coombs.anu.edu.au/~avalon/]http://coombs.anu.edu.au/~avalon/[/url] , pf [url=http://www.benzedrine.cx/pf.html]http://www.benzedrine.cx/pf.html[/url] Because of the modular architecture, Firewall Builder can be used to manage firewalls built on a variety of platforms including, but not limited to, Linux using iptables, ipfilter on FreeBSD or Solaris and pf on OpenBSD.

The GUI is written using GTK– and does not require any Gnome libraries.

Firewall Builder currently supports iptables, ipfilter, OpenBSD PF and Cisco PIX.! That’s a good start.

[url=http://www.fwbuilder.org/archives/cat_downloads.html]FirewallBuilder 2.0[/url]