Any way to do something like "Flowbits, " but for other than a TCP stream?

["Bachelor, Stephen A CTR USSOCOM HQ" <Stephen.Bachelor.ctr () socom mil>]

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.

-------------------------------------------------------------------------
This SF.net email is sponsored by: Microsoft
Defy all challenges. Microsoft(R) Visual Studio 2005.
http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
_______________________________________________
Snort-users mailing list
Snort-users () lists sourceforge net
Go to this URL to change user options or unsubscribe:
https://lists.sourceforge.net/lists/listinfo/snort-users
Snort-users list archive:
http://www.geocrawler.com/redir-sf.php3?list=snort-users