pfSense CE

pfSense CE is a free network firewall and router distribution based on FreeBSD, with a custom kernel and bundled third-party packages. It runs on hardware or virtual machines you control and aims to match or exceed the capabilities of commercial firewall appliances without artificial limits.

Every component is configured from a web interface, so there is no need for UNIX knowledge, the command line, or hand-editing rule sets. A package system extends the base install, adding capabilities such as unified threat management, load balancing, and multi-WAN connectivity alongside core firewall and routing functions.

pfSense started in 2004 as a fork of the m0n0wall project and has diverged significantly since. It is published by Rubicon Communications, LLC (Netgate) under an open source license, with optional commercial support and bundled hardware appliances available.