> admin at lctn.org wrote: > Try rearranging the arguments to the following. > > /sbin/iptables -A CUSTOMOUTPUT -o $RED_DEV -s 172.21.6.0/24 -j DROP ... also make sure that $RED_DEV is set to something. That error message is consistent with a dropped interface name (trying "-s" as the outside interface) -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Dave Carlson <thecubic at thecubic.net>