Firewall Builder is a flexible and powerful tool that allows you to build firewall configurations and policies for multiple firewalls/machines based on iptables, ipfilter, OpenBSD pf, Cisco ASA and PIX, or Cisco FWSM. fwbuilder uses objects and functionality like drag-and-drop and search-and-replace to help ease configurations. You can install the fwbuilder on a separate machine and then either manually transfer the configurations or securely deploy via SSH or SCP.

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