mod_jail is Apache 1.3.xx/2.0.xx/2.2.xx module, that makes running Apache
in a secure jail prison easy, so it is intended to run on FreeBSD only.
It is similar to mod_chroot, but uses FreeBSD's specific system call -
jail. Also mod_jail make it possible to change securelevel into jail
prison.

Original web site: http://igorpopov.newmail.ru/mod_jail/

WWW: http://code.google.com/p/mod-jail/