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Re: significance of ping_host in nessusrc

Subject: Re: significance of ping_host in nessusrc
Date: Wed, 19 Jul 2006 07:23:53 -0400
On Tue, Jul 18, 2006 at 08:12:21AM -0500, Scott Pate wrote:

I am not sure if this problem is new to the 3.x version, as I don't
remember having it in the past, but I have recently been forced to use
the GUI for running nessus, as I don't seem to get consistent results by
editing .nessurc and running in batch mode (which I would very much
prefer to do)
 
I'm running nessus 3.0.1 on Fedora core 4 using NessusClient, 
...
After some
investigation, I learned that 'ping_host' seems to have no effect, and
it is the actual plugin in the .nessurc file which determines whether
the host is ping'd.

Yes, ping_hosts is a deprecated feature of NessusClient.

Ping the remote host[entry]:TCP ping destination port(s) : = 1-3000
Ping the remote host[checkbox]:Do a TCP ping = no
11219 = yes 
 
nessus scans the port range 1-3000.

This is probably because you're implicitly enabling #10180
(ping_host.nasl) through the #11219 (the SYN Scan plugin).

Also, note that the port(s) to TCP ping (as opposed to the port range to
scan) should be specified either as a series, with semicolons separating
the actual numbers, or the word "built-in" or "extended".

Ping the remote host[entry]:TCP ping destination port(s) : = 1-3000
Ping the remote host[checkbox]:Do a TCP ping = yes
11219 = no 
 
only first digit is recognized in port range (port 1)

Do you have other port scanners enabled? Also, the port range is
specified incorrectly (see above).

Ping the remote host[checkbox]:Do a TCP ping = no
10180 = yes
11219 = no
 
ping_host.nasl runs, and then plugins start to run as well, even though
there was no response from ping.

ping_host.nasl runs because you've enabled it explicitly. I'm not sure
what the settings for the other ping-related options are, or even that
of unscanned_closed.

I there
documentation on the sections of the config file, and the implications
of the settings contained within

Have you seen the Nessus Knowledge Base that edgeos maintains? It's at:

  http://www.edgeos.com/nessuskb/

George
-- 
theall@tenablesecurity.com
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