IDS mailing list archives

Re: Announcement: Alert Verification for Snort


From: Michael Stone <mstone () mathom us>
Date: Thu, 23 Oct 2003 21:20:33 -0400

On Thu, Oct 23, 2003 at 12:03:13PM +0200, Konrad Rieck wrote:
If Snort or any IDS reports an alert with CVE number, and the
corresponding probe (in your case a NASL script) doesn't detect a
vulnerability, can you ensure that there isn't one?

If snort doesn't detect anything can you be sure there isn't an
intrusion? Why not just record everything? The volume of attacks a large
site sees requires some kind of filtering; it might be nice to say that
it's better to report 1000 false positives than to allow 1 attack to go
undetected, but at some point there is no realistic chance of all the
data being examined.
Mike Stone


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