Re: One Scanner Multiple Clients

Currently my policy is configured with the number of hosts in parallel
is 20 with 5 checks. I am running 3 clients simultaneously so I am
thinking of changing the policy to the number of hosts in parallel is
6 with 10 checks. Also I will monitor the CPU and memory utilization.

I am scanning around 800 windows servers
Pentium 3
Safe checks= on
Log details of the scan on the server=on
Nessus TCP scanner=on
Ping the remote host= on

Thanks for your feedback!

VR,
Kareem

On Wed, Aug 6, 2008 at 9:50 AM, Ron Gula <[email protected]> wrote:
> Kareem Beasley wrote:
>> All,
>>
>> I am looking at having three nessus clients connected to one scanner
>> running simultaneously (credentialed scan). However, My concern is the
>> scanner will move like molasses or keel over. The Linux scanner has a
>> Pentium 1.4GHz processor, 512K cache and 1.2Gs of memory.
>>
>> If anyone has done this, I am interested in your experience and suggestions
>
>
> Hi there,
>
>  From the Nessus scanner's point of view, your concern should be what
> the maximum number of systems that can be scanned at one time. The
> settings "number of hosts in parallel" and "number of checks in
> parallel" should be where you make your optimizations. If you
> had one scan that did 30 hosts in parallel with 10 checks in
> parallel, this would be similar to three scans occurring at the
> same time which only did 10 hosts in parallel.
>
> If you look at this blog entry:
> http://blog.tenablesecurity.com/2007/01/optimizing_ente.html
>
> and pay close attention to the output of plugin #19506
> http://www.nessus.org/plugins/index.php?view=single&id=19506
>
> you can see which hosts are taking a long time to scan and perhaps
> minimize your scan time.
>
> Also, during the scan, if you watch CPU and memory usage, you might
> be able to figure out if your scans are being too aggressive. If
> you have too many scans competing for resources, you might get
> faster overall performance by lowering your total number of scans
> occurring at the same time.
>
> Ron Gula
> Tenable Network Security
>
>
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