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IDS: Re: Tuning false positives

Re: Tuning false positives

From: Raffael Marty <rmarty_at_arcsight.com>
Date: Thu, 5 Jan 2006 12:56:31 -0800

> On the subject of SIMs and vulnerability analysis scans...has anyone
> actually found this feature to be useful?
> 1) I can't even imaging letting my SIM scan the network in such an adhoc
> manner. It doesn't help that none of the vendors seem to bother with
> providing much in the way of documentation of the process. I'm in a wacky
> world where an outtage is almost never trivial;-) I've used Nessus enough
> to know that it WILL eventually cause an outtage.

I think you misunderstand what a SIM does with respect to vulnerability
scans. SIMs import scans from vulnerability scanners that you have
deployed. For example from Nessus. I think I remember that there is one
product (not even sure if it is a SIM) that does ad-hoc scans for events
it gets. That's just not a good idea, introduces a lot of latency (so
doesn't scale) and has the problems you outline. Again. In general, SIMs
import vuln-scans, they don't scan themselves.

        -raffy

-- 
Raffael Marty, GCIA, CISSP                    raffael.marty_at_arcsight.com
Senior Security Engineer                 Strategic Application Solutions
ArcSight, Inc.                                         +1 (408) 864 2662
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Received on Jan 11 2006
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