Re: Need advices regarding signature tunning...

Jean-Pierre FORCIOLI wrote:
> Hi,
>
> I reviewed several IDS/IPS products and I concluded that there is two kind
> of signatures languages.
> First one, the simplest, allows attack detection customization by changing
> some value in the signature, or allows creating new attack by adding a one
> line rule (snort rule).

Simple snort rule.

> Second one, the hardest,  allows full signature or new protocol state machine
> development. by mean of a complete programming language (N-code).

Multiple Snort rules to model protocol state.

> I would like to know what are the pro/cons of using both methods. I would
> appreciate some feedback from some real life experiences, if possible.

Effectiveness for the stated purpose. Each approach has it's place
depending on the complexity of the vulnerability as it can be observed
on the wire.

> TIA.
>
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Test Your IDS

Is your IDS deployed correctly?
Find out quickly and easily by testing it 
with real-world attacks from CORE IMPACT.
Go to 
http://www.coresecurity.com/index.php5?module=Form&action=impact&campaign=intro_sfw
 
to learn more.
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