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Re: reporting false positives...: msg#00148

security.ids.snort.sigs

Subject: Re: reporting false positives...

The difference between 2 and 3 is that a pcap is easier to work with and verify. An ascii dump requires that a packet be crafted and then added to a session to run through snort where a pcap can be used natively. It is easy to do a snort -dve -r pcap.file but more difficult to recreate the pcap from an ascii dump. Nemesis and netdude leave plenty of opportunity to oops when going from ascii to pcap.

Russell Fulton wrote:

Thanks Matt & Janson for responses: This has confirmed what I had
thought. Methods of reporting by order of usefulness:

1/ tcpdump of whole session
2/ tcpdump of single packet
3/ Ascii/hex dump of packet from Acid/or whatever.

Is there much difference between 2 and 3? Given that 3 is much easier to
obtain.

When should I resort to getting full dumps of the streams?

I have reported FPs on many occasions before (although not lately) and
never had any feed back. I appreciate that folk are busy doing
productive stuff but I have been left wondering if it is worth my time
and if I am sending in the "right stuff".

I'd be happy if I got an occasional "Thanks, this is useful" or "Thanks,
but what I really need....".


Cheers, Russell




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