Mailing List Archive: max connections

Scott Pate wrote:
> I can set 'Number of hosts in parallel' and 'Number of checks in
> parallel' to configure what I assume is the maximum number of
> connections the server will make at any given time. So 10 hosts with 5
> checks per host is 50 plugins/checks.

Correct -- except keep in mind that some plugins (like port scanners)
might make more than one connection to a target and other plugins might
reuse an existing connection or base their logic entirely off of the
results from a previous plugins. In your case of 50 checks total, with
the exception of the port scanning and service fingerprinting, when
Nessus actually was doing the bulk of its checks, the number of
connections would be much lower than 50.

> Under 'service detection' there is an option for 'number of connections
> done in parallel'. How does this relate to the settings mentioned
> above? What if I have this set to 10. How does that effect my previous
> settings?

These settings effect the service detection plugins. If you have this
set to 10, then that specific plugin won't do more than 10 connections
at the same time.

Ron Gula
Tenable Network Security

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