[47258] in North American Network Operators' Group

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Effective ways to deal with DDoS attacks?

daemon@ATHENA.MIT.EDU (Pete Kruckenberg)
Wed May 1 19:18:49 2002

Date: Wed, 1 May 2002 17:18:24 -0600 (MDT)
From: Pete Kruckenberg <pete@kruckenberg.com>
To: <nanog@merit.edu>
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There's been plenty of discussion about DDoS attacks, and my
IDS system is darn good at identifying them. But what are
effective methods for large service-provider networks (ie
ones where a firewall at the front would not be possible) to
deal with DDoS attacks?

Current method of updating ACLs with the source and/or
destination are slow and error-prone and hard to maintain
(especially when the target of the attack is a site that
users would like to access).

A rather extensive survey of DDoS papers has not resulted in
much on this topic.

What processes and/or tools are large networks using to
identify and limit the impact of DDoS attacks?

Thanks.
Pete.



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