Ferm - for Easy Rule Making. Build Powerful Linux Firewalls with Firewall Builder. 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.
However, if you're installing Fwbuilder on Ubuntu, the package that will install is out of date and will not work. In order to get a working, updated Fwbuilder installed on Ubuntu, follow these steps (You will either have to su to the root user or use sudo for this to work): The Graphical Interface. Firewall de Sécurité m0n0wall - A-Enterprise CTI Shop. Soekris Engineering. FreeBSD firewall using PF - clickdeathsquad. FreeBSD firewalls using PF (Tutorial)By Click Death Squad (C.D.S.)Revision 1.0 An intermediate level BSD firewall script provides the opportunity to host services on your home network connection, but also shield you from rampant attacks that occur on the Internet.
Click Death Squad has a test computer that receives multiple brute force attempts each day, in addition to exploits for ftp services and http daemons. Consider normalizing your traffic and reducing the amount of garbage filling your log files. You do check your log files, right? When you are receiving hundreds of SSH brute force attempts every single day, you may want to re-evaluate your situation. In this example, we used a FreeBSD 7 box, and all the commands issued are given in quotes, with the result of the commands being listed in grey. Tools you will need to accomplish this task: A FreeBSD server that you have administrative rights toIntermediate to advanced Linux/UNIX networking skillsA text editor (nano)A cold beer.
Hardware Appliances Overview. Multi-functional Firewall Software - Open Source Content Filter & Spam Filter | Untangle.com. The GNU C library dynamic linker expands $ORIGIN in setuid library search path. ClearFoundation develops ClearOS, a Linux Network, Gateway, Server.
Blocking all other DNS queries except to OpenDNS for content filtering - Scott Ullrich.