pfSense is an operating system for routers and firewalls based on FreeBSD. The project will soon be ending support for its legacy 2.3.x branch and encourages users to upgrade to version 2.4. "Network security is serious business so let's get right to the point: pfSense software version 2.3.x is nearing End Of Life, October 31, 2018. As we announced previously, pfSense software version 2.4.x releases deprecated support for 32-bit x86 hardware and NanoBSD installations. We promised to maintain version 2.3.x with security updates for at least a year and that time is near. It is time to implement upgrades on affected security solution platforms to supported hardware." Information on upgrading can be found in the end of life announcement.