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[Snort-users] Any way to do something like "Flowbits, " but for other th

from [Bachelor, Stephen A CTR USSOCOM HQ] Network Security [Permanent Link]
Subject: [Snort-users] Any way to do something like "Flowbits, " but for other than a TCP stream?
Date: Thu, 15 Nov 2007 16:02:03 -0500 

My problem is false positives on rule 1:2189, Bad-Traffic IP Proto 103.
To exploit the vulnerability, one must send 4 packets, with successive
protocol types: 53, 55, 77, and 103. The Snort rule only seems to look
for proto_id: 103, and it's creating thousands of false positives for
me. How can I make it trigger on 103 only if there's been a proto_id: 77
to the same destination, one packet earlier? As far as I can tell,
threshholding rules aren't quite flexible enough to help.

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