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A version of the FreeBSD operating system
PfSense logo.png
DeveloperRubicon Communications, LLC (Netgate)
OS familyFreeBSD
Working stateCurrent
Source modelOpen source
Latest release2.4.5-p1 (amd64) / June 9, 2020; 4 months ago (2020-06-09)[1]
Latest preview2.5.0[2] / October 17, 2019; 12 months ago (2019-10-17)
Repository Edit this at Wikidata
Platforms32-bit (discontinued in 2.4.x); 64-bit Intel / AMD
Default user interfaceWeb
LicenseApache License 2.0[3]
Support status
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.[4][5]


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.[6] The name was derived from the fact that the software uses the packet-filtering tool, PF.[7]

In 2014, a competing open source firewall and routing software project, OPNsense, was forked from pfsense, with the first official release in Jan 2015.[8] Both pfsense and OPNsense are under active development, while the original m0n0wall project has been discontinued.

See also


  1. ^ "Releases — Versions of pfSense and FreeBSD". Retrieved 2020-06-16.
  2. ^ pfSense Snapshot Release
  3. ^ "pfSense adopts Apache 2.0 License". Serve The Home (Loyolan Ventures, LLC). 19 June 2016.
  4. ^ "You should be running a pfSense firewall". InfoWorld. 22 December 2014. Retrieved 27 July 2015.
  5. ^ 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: |6= (help)
  6. ^ Fields, Robert (28 October 2016). "Happy 10th Anniversary to pfSense Open Source Software". Netgate Blog.
  7. ^ 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.
  8. ^ "About OPNsense". January 2, 2015.

Further reading

External links