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by gargravarr 3647 days ago
One other issue is that MAC addresses are allocated in contiguous blocks to manufacturers. If you know the general pattern (the first N characters are manufacturer-specific), there is precious little stopping you writing a script to loop through all the possibilities and spam the server with them. Most network devices have the MAC address printed on a label (with a barcode for an admin to scan), so it would be trivial to grab an example from a photo.
2 comments

"Your ideas are intriguing to me and I wish to subscribe to your newsletter!" XD

It would be pretty cool to remote control all of those sockets and make a blinkenlights display visible from space :D

I'll start the GitHub project :D
N=6, this is called the OUI.
Sometimes N=9, such as when the address starts 00:50:c2. This block is divided into blocks of 4096 instead of the usual 2^24 so small users can get a block for a few hundred dollars instead of over a thousand.
Thanks for clarifying.