ids rule in regular expression form

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Respected Sir,
I am a doing my PG in Computer science. this academic session i am in my fourth semester. I am working on a project "Pattern matching in Intrusion Detection System based on regular expression".

I am through with the packet capturing and packet detail inspection. But could not get how to get the rules of IDS in regular expression format. I have scan the SNORT IDS but i couldnot get those rule.

I humbly request you to help me out to find the rules of IDS in regular expression form and their matching with the incoming packet.

Thanking you!
regards

Chandrapal Chauhan
M.Tech. CSE
IV SEM

Posted 6-Feb-12 18:55pm

Member 8626467

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zyck 7-Feb-12 1:21am

can you give some example for me to see the output

Sergey Alexandrovich Kryukov 7-Feb-12 15:55pm

I curios what pattern matching does to intrusion protection. Does it mean that the system has security holes in first place (this is always true, most existing systems were completely open and unsecured in first place), but pattern matching is a recognition technique used to prevent some (matching or not matching the criteria) threats? If so, I would not call it security... :-)

I know about patterns from http://en.wikipedia.org/wiki/Intrusion_detection_system
--SA

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