Re: do bogon filters still help?

[Rob Thomas]

Hi, Steve.

] So -- I'd like people to re-examine the question.  Does anyone have more 
] recent data on the frequency of bogons as a percentage of attack 
] packets?  What would that number look like if you filtered just the 
] obvious -- the ranges given above, plus the RFC 1918 prefixes?  Are 
] your defenses against non-spoofed attacks really helped by the extra 
] filtering?

Great question, and we're eager to hear the results as well.  Our
study is well past its prime, to be sure.

Thanks,
Rob.
-- 
Rob Thomas
Team Cymru
http://www.cymru.com/
ASSERT(coffee != empty);