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Date: Sat, 20 Dec 2008 08:42:38 +0300
From: Jeff Laine <wtf.jlaine@gmail.com>
To: Richard Yang <kusanagiyang@gmail.com>
Message-ID: <20081220054238.GA78194@free.bsd.loc>
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Cc: freebsd-questions@freebsd.org
Subject: Re: nessus report
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On Fri, Dec 19, 2008 at 09:32:51PM -0800, Richard Yang wrote:
> hi,
> when i ran nessus against my bsd box, nessus can detect "the remote host is
> up".
> i don't understand how nessus can detect it...
> does anyone know how it is done?
> thanx
> 
> rich

I can't tell about nessus but nmap does so after discovering any open ports, 
TCP RST responses from closed ports or ICMP responses from your host. 
I believe it's similar with the nessuss.


-- 
Best regards,
Jeff

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