John Woods complained about constant PING messages coming in to his system.

Well...

Heard a rumour that there's an extremely hacked version of csh out there
which makes use of icmp as a transport layer.  You might want to run tcpdump
and take a look.

				--*greywolf;
--
When the government fails to meet the needs and wishes of its populace,
it is the right AND THE DUTY of the people to _abolish_ it, and start anew.
				-- Tom Jefferson (paraphrased)