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2003 Oct 26
3
Best way to filter "Nachi pings"?
We're being ping-flooded by the Nachi worm, which probes subnets for
systems to attack by sending 92-byte ping packets. Unfortunately,
IPFW doesn't seem to have the ability to filter packets by length.
Assuming that I stick with IPFW, what's the best way to stem the
tide?
--Brett Glass