Re: DOS attacks

["Lurene A Grenier" <lurene.grenier () sourcefire com>]

Nessus doesn't actually exploit any vulnerabilities; it only checks banners
and parses out the versions to determine if it thinks you're vulnerable to
something.   As such, it's not doing anything actually malicious and its
activity shouldn't be detected in most cases.

 

Snort rules will generally only detect actual attacks as they focus on
detecting triggering conditions necessary to actually exploiting the
vulnerability in question.

 

_________________________

Lurene A Grenier, 

Analyst Team Lead

Senior Research Engineer

 

Office: (410) 423-1918

Mobile: (703) 839-3898

                 ,,_

SourceFire Inc. o"  )~

                 ''''

 

From: snort-users-bounces () lists sourceforge net
[mailto:snort-users-bounces () lists sourceforge net] On Behalf Of Kamran Shafi
Sent: Thursday, March 13, 2008 2:43 AM
To: snort-users () lists sourceforge net
Subject: [Snort-users] DOS attacks

 

P.S.

Is there a specific preprocessor to handle DOS attacks in Snort or it is
only done through the Snort rules? In specific, I couldn't find any rules
for flooding DOS attacks and the classical DOS attacks like land and
teardrop. Do I have to write my own rules to cater for these types of
attacks?

 

Further, I am conducting a full Nessus scan but Snort is only reporting very
few alerts (20 odd). Is it normal? 

-- 
Regards
Kam

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