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Network Security Nessus-Users
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Re: Internet hosts = "No vulnerability found"

Subject: Re: Internet hosts = "No vulnerability found"
Date: Sat, 17 Feb 2007 15:25:52 -0500
Sean Carolan wrote:
Hi folks, wondering if you can help me with this:

I'm using the Windows version of Nessus to scan my Linux servers.
When I scan the Linux box on my local LAN, I get a few messages in the
vulnerability report related to SAMBA, etc.  However when I try to
scan a different Linux server on the public Internet, I get "No
vulnerabilities found" after about 10 seconds of scanning.  I can't
believe it's actually going through the entire list of plugins in 10
seconds.  I even have my ssh info in the settings to let it log into
the Linux box as a normal user.  I have tried turning off ping, and
also expanding "Checks read timeout" to 15 seconds, but no luck.

Try running a sniffer either on your local host or target to see which
packets are actually getting to your target system.

This is a very common support request our Direct Feed subscribers
inquirer about. Typically it is a firewall or router or proxy or some
network issue between the scanning host and the targets.

Ron Gula, CTO
Tenable Network Security
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