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|A version of the FreeBSD operating system|
|Developer||Rubicon Communications, LLC (Netgate)|
|Source model||Open source|
|Latest release||2.4.5-p1 (amd64) / June 9, 2020|
|Latest preview||2.5.0 / October 17, 2019|
|Platforms||32-bit (discontinued in 2.4.x); 64-bit Intel / AMD|
|Default user interface||Web|
|License||Apache License 2.0|
|Supported by the community|
pfSense is an open source firewall/router computer software distribution based on FreeBSD. It is installed on a physical computer or a virtual machine to make a dedicated firewall/router for a network. It can be configured and upgraded through a web-based interface, and requires no knowledge of the underlying FreeBSD system to manage.
The pfSense project started in 2004 as a fork of the m0n0wall project by Chris Buechler and Scott Ullrich and the first release was in 2006. The name was derived from the fact that the software uses the packet-filtering tool, PF.
In 2014, a competing open source firewall and routing software project, OPNsense, was forked from pfsense, with the first official release in Jan 2015. Both pfsense and OPNsense are under active development, while the original m0n0wall project has been discontinued.
- "Releases — Versions of pfSense and FreeBSD". netgate.com. Retrieved 2020-06-16.
- pfSense Snapshot Release
- "pfSense adopts Apache 2.0 License". Serve The Home (Loyolan Ventures, LLC). 19 June 2016.
- "You should be running a pfSense firewall". InfoWorld. 22 December 2014. Retrieved 27 July 2015.
- Miller, Sloan (26 June 2008). "Configure a professional firewall using pfSense". Free Software Magazine (22). Archived from the original on 3 October 2011. Retrieved 27 September 2009. Cite has empty unknown parameter:
- Fields, Robert (28 October 2016). "Happy 10th Anniversary to pfSense Open Source Software". Netgate Blog.
- Mobily, Tony (14 August 2007). "Interview with Jeff Starkweather, Chris Buechler and Scott Ullrich". Free Software Magazine. Archived from the original on 12 September 2015. Retrieved 5 May 2020.
- "About OPNsense". January 2, 2015.
- Mastering pfSense, Second Edition Birmingham, UK: Packt Publishing, 2018. ISBN 978-1788993173. By David Zientra.
- Security: Manage Network Security With pfSense Firewall [Video] Birmingham, UK: Packt, 2018. ISBN 978-1789538991. By Manuj Aggarwal.