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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 release2.4.4-RELEASE-p3 (amd64) / May 11, 2019; 2 months ago (2019-05-11)
Latest preview2.5.0 / March 17, 2019; 4 months ago (2019-03-17)
Platforms32-bit (discontinued in 2.4.x); 64-bit Intel / AMD
Default user interfaceWeb
LicenseApache License 2.0[1]
Support status
Support 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.[2][3]


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.[4] The name was derived from the fact that the software uses the packet-filtering tool, PF.[5]

On Sept 24, 2018 version 2.4.4 was released.[6]

In November 2017, a World Intellectual Property Organization panel found that Netgate, the copyright holder of pfSense, had been using the domain in bad faith to discredit OPNsense, a competing open source firewall forked from pfSense. It compelled Netgate to transfer the domain to Deciso, the developer of OPNsense.[7]

See also


  1. ^ "pfSense adopts Apache 2.0 License". Serve The Home (Loyolan Ventures, LLC). 19 June 2016.
  2. ^ "You should be running a pfSense firewall". InfoWorld. 22 December 2014. Retrieved 27 July 2015.
  3. ^ Miller, Sloan (June 26, 2008). "Configure a professional firewall using pfSense". Free Software Magazine (22).
  4. ^ Fields, Robert (October 28, 2016). "Happy 10th Anniversary to pfSense Open Source Software". Netgate Blog.
  5. ^ Mobily, Tony (August 14, 2007). "Interview with Jeff Starkweather, Chris Buechler and Scott Ullrich". Free Software Magazine.
  6. ^ "pfSense 2.4.4 Release Announcement".
  7. ^ "WIPO Domain Name Decision: D2017-1828". WIPO. November 12, 2017.

Further reading

External links