RE: Identifying DoS-attacked IP address(es)

FYI, we developed a system that sniffs FE,GE,DS3,OC3-48 POS and creates a model using the cross-product of: 1) source/destination address distributions 2) packet rate 3) protocol This works very well to detect floods and does not require messing with routers.. Livio. -----Original Message----- From: owner-nanog@merit.edu [mailto:owner-nanog@merit.edu] On Behalf Of Neil J. McRae Sent: Monday, December 16, 2002 9:38 AM To: Andre Chapuis Cc: Christopher L. Morrow; nanog@nanog.org Subject: Re: Identifying DoS-attacked IP address(es) Sampled netflow, or look at the traceback stuff in later IOS 12.0S versions. Avoid filter lists as the GSR engine cards have a statically limited number of entries. Regards, Neil.