Linux is highly secure, but you should still have a firewall. You should know if your ISP's hardware (gateway) uses a firewall. One of the easiest Linux firewalls is UFW and its GUI sidekick, GUFW.

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 ...

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 ...

We’ve assessed various firewalls, and looked at aspects such as ease of setup, deployment options, interface, documentation, performance, and the usability of various features, among other things.