nanog mailing list archives

Re: SYN floods continue


From: "Joseph T. Klein" <jtk () nap net>
Date: Wed, 11 Sep 1996 11:04:18 -0500 (CDT)



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


If they modulate the phasers we just need to modulate the sheilds. :-O

If someone comes up with a good solution we will be glad to impliment it.
-- 
/*Joseph T. Klein         *    Keep Cool, but Don't Freeze
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