On Mon, 7 Jul 1997, Jim Shankland wrote:
something along the lines of:
and then using it like
sysctl -w net.inet.ip.25=`id smtp`
Unfortunately, that doesn't address the distinction between TCP and UDP
services.. I'm not sure that is a huge issue, but it seems relevant.
Julian Assange wrote patches for IPFW which did this sort of thing in
December, 1996, posted to -hackers.