The Linux kernel includes some of the most powerful and flexible firewall code in any general-purpose operating system. This code is called Netfilter, though most of us refer to it by the name of its ...

IPFire is a Linux-based stateful firewall distro that’s built on top of Netfilter. It began as a fork of the IPCop project, but has since been rewritten based on Linux From Scratch. IPFire can be ...

In this Recipe, I'll explain both the options for firewall protection and the differences between hardware and software implementations. By the end, you should be able to point a client to the ...

For all the importance savvy computer users place on computer security, striking a balance between a system's performance and the level of protection provided to it has never been particularly easy.

Last month, I kicked off a series of articles on transparent firewalls, beginning with a brief essay on why firewalls are still relevant in an age of Web applications and tunneled traffic. I also ...

Why waste money on an enterprise firewall when you can build your own from old PC parts?

We list the best Linux firewalls, to make it simple and easy to set up and manage a more advanced firewall for your Linux PC or IT network. A dedicated firewall is the first line of defense when it ...