Focus on IDS
Re: Re: Snort with an expert system Jun 22 2009 07:47PM
tol sics se (1 replies)
Re: Snort with an expert system Jun 25 2009 08:45AM
Stefano Zanero (s zanero securenetwork it) (1 replies)
Re: Snort with an expert system Jun 25 2009 09:08AM
Tomas Olsson (tol sics se) (1 replies)
Re: Snort with an expert system Jun 25 2009 09:48AM
Stefano Zanero (s zanero securenetwork it) (1 replies)
Tomas Olsson wrote:
> Stefan,
> I appreciate your feedback. I am aware that the DARPA dataset is not
> looked upon with favor in the security community, so I can understand
> that that using it is not enough. But, how would I convince you? By
> applying the method on real data and letting a security professional
> tell me if it is performing OK?

Usually, extraordinary claims need extraordinary proof. If there was any
reason to believe that clustering data in the way you describe would
lead to spotting false positives (which, in the case of Snort, would
rather be noncontextual alerts which you do not care about), testing it
over IDEVAL may be sufficient.

Since there is no reason why this should work, you need much more
convincing experiments to show that it actually does. And it's not just
a matter of the dataset, it's also a matter of what you define as a
false positive: in fact, the term "false positive" has a different
meaning for misuse detectors and anomaly detectors.

Best,
Stefano

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[ reply ]
Re: Snort with an expert system Jun 25 2009 10:19AM
Tomas Olsson (tol sics se) (1 replies)
Re: Snort with an expert system Jun 25 2009 10:26AM
Stefano Zanero (s zanero securenetwork it) (1 replies)
Re: Snort with an expert system Jun 26 2009 12:18AM
Gary Halleen (ghalleen cisco com) (1 replies)
Re: Snort with an expert system Jun 26 2009 07:30PM
Stuart Staniford (sstaniford FireEye com) (1 replies)
Re: Snort with an expert system Jun 26 2009 09:18PM
Gary Halleen (ghalleen cisco com)


 

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