nanog mailing list archives

Re: SYN floods continue


From: "Larry J. Plato" <ljp () ans net>
Date: Wed, 11 Sep 1996 18:43:22 +0000 (GMT)

If you can write a SYN flooder you can trivialy add the call to
to generate a random source address....

IMHO this is not a win.

Larry Plato


I don't know, but since nobody else seems to either, how about a 
router box that detects excessive SYN activity and then automatically 
blocks that ip address for awhile?  I suppose it just means that
the attacker has to vary the source address rapidly.

Anyway. Point is this: We can't take too much more of this, nor can our
customers. I have yet to hear *anyone* come up with any ideas even remotely
reasonable for how to deal with this situation, long term, except for the


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