pfSense 2.1.4 was released.
"2.1.4 follows very shortly after 2.1.3 and is primarily a security release. Packages also had their own independent fixes and need updating. During the firmware update process the packages will be re-installed properly. Otherwise, uninstall and then re-install packages to ensure that the latest version of the binaries is in use. Other fixes: patch for Captive Portal pipeno leaking issue which leads to the 'Maximum login reached' on Captive Portal; remove text not relevant to Allowed IPs on the Captive Portal; remove units from burst as it is always specified in bytes; add column for internal port on UPnP status page; make listening on interface rather than IP optional for UPnP...."
pfSense is a m0n0wall-derived operating system. It uses Packet Filter, FreeBSD 6.x (or DragonFly BSD when ALTQ and CARP is finished), ALTQ for excellent packet queuing, and an integrated package management system for extending the environment with new features.