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I created an ad-hoc network to share my hard-wired connection with other computers/devices, but I can't find anywhere a place that shows the connections. Can I? Where is it?

Assuming it exists, what information is available about the connected devices? Are there multiple locations to get information about them?

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One approach may get you information about the devices recently transferring data to and from your computer over your network:

arp -a -i interfacename

This should work on any type of network, not just ad-hoc ones, but since it displays a cache value it only displays devices used fairly recently. It will display the IP addresses and their unique MAC addresses.

The TCP protocol is often used to transfer information; print jobs, for example. To see current and some very recent TCP connections you can use the ss -t command.

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