The false positives can explode in the right circumstances.  This is 
because many of the scripts do very little checking of the results. 
 I.e. if a script does an HTTP GET for /somebad.cgi and the webserver 
doesn't return a 404, the script assumes the somebad.cgi is installed.

Granted, it's a fair amount of work to do some validation here, but 
blindly making assumptions can lead to a lot of adrenaline and 
excitement one your or the client's part.

I have two projects in mind for this summer.  Write a new and improved 
GTK GUI and go through all the scripts and make significant corrections 
and add result validations.

David

camccuk wrote:

>Hello all,
>
>I've tried to dig through the docs, such as they are, but I don't see anything
>related to this:
>
>I'm using the 2k client to run a scan from a linux box on another
>linux server across the LAN. So far, so good. I've tried to switch off
>as many windows-specific tests as I can but I still see dozens of
>reports of IIS vulnerabilities. Also, various CGI scripts are reported
>as being present although they aren't.
>
>I'm quite happy with the idea of false positives but so many? I don't
>know which reports to ignore - some of them are obviously erroneous
>but most of them I am unsure. I assume Nessus is testing for IIS vulns
>because despite the fact that nmap can guess that this is a linux machine, it
>still attempts these other tests? It would
>be good to be able to tell it - This is a linux box so forget the IIS
>stuff! There are several hundred plug-ins so I dread going through
>them all removing Windoze tests.
>
>Anyone have any advice on setting this up a bit better? Cheers for any
>tips.
>
>cam
>
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