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

[le jert]

thank you very much for kind response,

:)







>From: Russell Scibetti <russell at quadrix.com>
>To: le jert <lejert at hotmail.com>
>CC: nagios-users at lists.sourceforge.net
>Subject: Re: [Nagios-users] Cheking non-open ports... Is it possible ????
>Date: Wed, 26 Feb 2003 10:08:08 -0500
>
>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