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Fwbuilder is a unique graphical firewall tool that allows the user to create objects and then drag and drop those objects into firewalls, to build a powerful security system for a single PC or a network of PCs. Fwbuilder supports a wide range of firewalls (Cisco ASA/PIX, Linux iptables, FreeBSD's ipfilter, OpenBSD's pf , and more), so its rules can be deployed on multiple platforms. Let's take a look at using Fwbuilder on Linux, which might just become a life-long affair with a powerful security system. Installation of Fwbuilder is as simple as searching for "fwbuilder" (no quotes) in your Add/Remove Software tool (such as Package-Kit, Synaptic, etc) and marking Fwbuilder for installation.
FreeBSD firewalls using PF (Tutorial) By Click Death Squad (C.D.S.)
Blocking all other DNS queries except to OpenDNS for content filtering Download this gallery (ZIP, null KB) Download full size (23 KB)