My guest post "Introduction to Firewall Builder 4.0" has been published on nixCraft blog. Thanks Vivek! Read it here: http://www.cyberciti.biz/tips/introduction-to-firewall-builder-4-0.html
In this post I go over high level points explaining benefits of Firewall Builder for a system administrator and then look at the new features in Firewall Builder 4.0. This is the first article in a mini-series of two, the second article will demonstrate configuration of a firewall for a cluster of two web servers.