nanog mailing list archives

Re: Effective ways to deal with DDoS attacks?


From: Pete Kruckenberg <pete () kruckenberg com>
Date: Wed, 1 May 2002 23:56:07 -0600 (MDT)


On Thu, 2 May 2002, Richard A Steenbergen wrote:

SYN packet comes in, one of these machines responses with a
RST to the "source", which is actually the target of the

You have an interesting situation. I think rate limiting
outbound RSTs would be the least offensive thing you
could do, off the top of my head.

What about just blocking out-going RSTs altogether from our
borders? While this interferes with "proper" TCP
functionality, would it actually interfere enough to cause
noticeable problems? Would certainly be less of a burden on
routers than rate-limiting.

Pete.


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