The Ping Master is a Windows Service that will periodically send a ping request to a set of network addresses, log the result, and allow another executable to be run in response to either success or failure. For example maybe you want to restart a VPN service or send an email to an administrator.
You configure the service with a simple GUI tool that is included in the installer.
The binaries included in the installer require .Net 4.0 to be installed.
For installation and usage instructions see the documentation