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Re: Host identification b/w workstation and server( or internet facing s

from [George A. Theall] Network Security [Permanent Link]
Subject: Re: Host identification b/w workstation and server( or internet facing system)
Date: Wed, 26 Mar 2008 07:34:10 -0400 
On Mar 26, 2008, at 4:45 AM, Chak Kevin wrote:


I am trying to understand how Nessus identify a host is a web server  
(or internet facing system) or just a regular workstation. Have this  
identification been implemented in the source code? Or Nessus do  
this by using some specific plugins?


Service detection isn't as black and white as this -- a host isn't  
identified as being a web server or workstation. Instead, Nessus  
attempts to identify the services running on the various ports(s)  
being scanned so in theory it will catch the web server running along  
with MySQL, SSH, and SMTP.

Nessus uses plugins for this. Some such as #10330, #17975, and #11153  
are fairly general - they send a request to a port and make a  
determination based on the banner or the results returned. Others are  
specific to a single application / protocol.


George
-- 
theall@tenablesecurity.com



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