Security Incidents mailing list archives

RE: Bogon IPs traffic only seen by netflow, confined within a VLANonly


From: Jose Nazario <jose () monkey org>
Date: Tue, 11 Apr 2006 21:53:07 -0400 (EDT)

this may sound really too basic, but it strikes me that you're quite
possibly seeing a flow decode bug shifting some fields and giving you bad
data. ("think horses, not zebras" and occam's razor ...)

are you sure the flow coming out of that device is formed as your flow
decode tools expect it to be?

feel free to contact me off-list, i work for a ocmpany that does boatloads
of flow processing and may be able to help you out, as well.

________
jose nazario, ph.d.                     jose () monkey org
http://monkey.org/~jose/                http://infosecdaily.net/
                                        http://www.wormblog.com/


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