Nagios-check_internet is a plugin for Nagios that verifies internet connectivity by pinging specific hosts.
One of the things I liked about this plugin is that it is very easy to set up. All you need to do is modify the internetservers file that comes with the archive and put it somewhere on your system where the plugin can read it. Personally, I chose to use /etc/nagios/etc/internetservers. Once you have done this, you can run the plugin and it will automatically start checking the specified hosts.
In my experience, nagios-check_internet has been extremely reliable. I have used it for several weeks now and have never encountered any false positives or false negatives. Additionally, the plugin is highly configurable, meaning that you can tweak the settings and thresholds to suit your particular needs.
Overall, I would highly recommend nagios-check_internet to anyone who needs to monitor their internet connection. Whether you are an IT professional or a casual user, this plugin is sure to come in handy.
Version 0.1: N/A