The program allows you to monitor MAC address changes over a network using the NetBios monitoring check and the ARP monitoring check (via the NetBios and ARP protocols).
The program tries to resolve a host's MAC address by its specified IP address, by addressing to the NetBIOS or ARP services of the host to be checked. If the MAC address can be resolved, and it is equal to the specified one, the check is considered passed. The program can prompt you if the specified MAC address is changed.

In order to add this check, select a host, then click "Add check", and find the necessary monitoring check name on the Wizard window.

Configure the check parameters on the displayed window. You can modify the parameters later using the "Edit Check..." menu item. Learn more on how to configure the check alerts and other options here.
Requirements: Windows XP/Vista/7/8.1/10/11, Server 2003/2008/2012/2016/2019/2022 supported.