"Firewall Builder is a firewall configuration and
management GUI that supports configuring a wide range of firewalls
from a single application. Supported firewalls include Linux
iptables, BSD pf, Cisco ASA/PIX, Cisco router access lists and many
more. The complete list of supported platforms along with
downloadable binary packages and soure code can be found at
"This tutorial is the first in a series of howtos that will walk
through the basic steps of using Firewall Builder to configure each
of the supported firewall platforms. In this tutorial we will
configure Access Control Lists (ACL) on a Cisco router.
"The diagram below shows a simple 2 interface router
configuration with the router acting as a gateway to the Internet
for a private LAN network."