[CentOS] Scripting port scans

Fri Dec 8 04:15:43 UTC 2006
Gavin Carr <gavin at openfusion.com.au>

On Thu, Dec 07, 2006 at 11:06:01AM -0800, Kevan Benson wrote:
> On Thursday 07 December 2006 10:39, Ugo Bellavance wrote:
> > Hi,
> >
> > I need to test one specific port on a serie of Ip addresses that I own,
> > I thought about using nmap or telnet, but both return the same value, no
> > matter if the port is open or filtered.
> >
> > Anyone has an idea, before I start scripting to analyse the output of
> > the command?
> If you're using nagios for any monitoring, there's a nmap plugin in the 
> contrib directory of the nagios-plugins package.  It will notify you if the 
> host displays any open ports not pre-defined as open for that host.

And there's a check_tcp plugin for the simpler single-port case. 
You can also use the plugins directly even if you're not using 
nagios. The nagios-plugins package is available from Dag's rpmforge


Gavin Carr
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