Cheking non-open ports... Is it possible ????

[Russell Scibetti]

Use a combination of check_tcp to the particular port and the negate 
plugin wrapper.  So, if you want a critical if Port 80 is open:

$USER1$/negate $USER1$/check_tcp -H <HOST> -p 80

You will get an OK if there is no response (port is closed), and a 
 CRITICAL if the port responds.

Russell Scibetti

le jert wrote:

>
>
>
> Hi !
>
> In order to check firewall security, I would like to know how I can
> check if certain ports are closed (and not open, as usually). I mean
> writing 'ok' for the service if ports 80,23,... are closed.
> This would also be usefull for checking ftp or whatever else are
> installed on non-authaurised machines.
>
> Thanks
>
> Note : I'm running nagios-1.0 with pluggin 1.3.0 beta2 on a redhat 7.3
>
>
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-- 
Russell Scibetti
Quadrix Solutions, Inc.
http://www.quadrix.com
(732) 235-2335, ext. 7038





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::: Messages without supporting info will risk being sent to /dev/null