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Automatically detecting a new computer connected to the network

Is there an elegant way to make a program discover a new computer connected to the network?

I want my program to "automatically detect" a new computer connected to the network (they are on the same network). Like a USB device connected to a computer.

What I am doing now is to save a list of all computers on the network from time to time. Another approach is to PING all available IP addresses on the subnet.

Are there any other elegant approaches?

Thank!

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2 answers

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