12.3 Jail NG

Jail NG is a "from-scratch re-implementation of Jail" by Robert Watson, a FreeBSD committer. Some of the new features include the ability to add processes to a jail, an improved management tool, and per-jail sysctls. For example, you could have sysvipc_permitted set on one jail while another jail may be allowed to use System V IPC. You can download the kernel patches and utilities for Jail NG from his website at: http://www.watson.org/~robert/jailng/.