It does not work as it was in version 7!!!
it should work without any manipulation of the console...
PS
System Information:
FreeNAS-8.0.1-RC2-i386 (7813)
Intel(R) Core(TM)2 Duo CPU E6540 @ 2.33GHz
1011MB
Tue Sep 20 14:55:20 2011
OS Version FreeBSD 8.2-RELEASE-p2