Can Nagios detect the activity on a port # ?

[Andreas Ericsson]

Iñigo Gomez Abrisketa wrote:
> Related to my previous mail, I've found that Remote Desktop port number is 3389.
> Nagios, obviously, can check if this port is active, but ...
> Can Nagios detect if this port is in use (or in session)?
> 

Not without sitting as a router or doing something which would normally 
being considered black-hat'ish.

You could set up a netflow gatherer and submit passive checks, I 
suppose, but there's no way of determining traffic to/from a remote host 
without sniffing the wire. Moste catenets won't allow that without some 
sort of ARP poisoning scheme in place, and that's very disruptive for 
the network.

> Thanks in advance,
> Iñigo Gómez Abrisketa
> 
> 
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-- 
Andreas Ericsson                   andreas.ericsson at op5.se
OP5 AB                             www.op5.se
Lead Developer


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