I am wondering if it would be possible to use an arduino as a simple mac address sniffer?
We are using a mac address filter on our network and need to registered the mac address of all devices that will connect to the network. It would be rather handy to have a box we could connect to the network port of a device and have it display the mac address of that device.
I am guessing that I would need to start ethernet in server mode and then read the data that the connected device is broadcasting, but I didn't see any libraries that parsed that information in to anything useful. Is there a function to read the mac address of a connected computer?