FreeBSD v. 5.x or 4.x

[unreal1024]

Hi, tell me please, whitch latest version pfSense is build in to FreeBSD v. 5.x or 4.x?
Thanks!

pfSense v. 1.0.1 is build in to v. FreeBSD v. 6.1 and is bad for me (watcchdog timeout).

[sullrich]

This question has been asked atleast 5 times in the last month.  Please search.

[jeroen234]

v4 and v5 are very very old
pfsense uses the last version of freebsd so that it supurt all new machines
if you got stone aged stuff then use monowall witch uses freebsd 4.x