I'm looking for a program that will always scan my network to know what computer is up and running and warn when a specific computer log on the network.

To be more exact, I want a software that will warn me when a computer with name "SDK" will log in the network. The software should be able to ping the network every X mins, resolved computer name and keep a history. If anyone know or find a program like that, give me a link plz. Thank you.

I'll continue looking on my side.