Nagwin - Nagios for Windows

Nagios for windows is now available for those users who want to run Nagios on their windows environment.  Tevfik Karagulle produced a distribution package of Nagios Core for Windows systems using Cygwin.

You can download the package at sourceforge : 

Download here Nagwin
Download NagwinDown

Nagios NRPE addon installation and configuration under Debian

Nagios is a service that, by default, runs on only one node. That host node can be used to check various services on other nodes - including SSH, ping, web services, and many others - but it can't execute commands on remote machines. In order to do that, you need to install the Nagios NRPE plugin, sometimes called the Nagios client. This plugin has two components: a simple plugin for Nagios on the host machine, and an NRPE daemon. The daemon needs to be installed on every machine than the host will be running remote commands on.