default: 1234.5678.90AB
IEEE 802/IETF: 12-34-56-78-90-AB
Unformatted: 1234567890AB
One byte 12:34:56:78:90:AB
Two byte 1234:5678:90AB
IP addresses were using dots
One byte 12.34.56.78.90.AB
two byte 1234.5678.90AB
Xerox made it and got 00-00-00
Cisco 00-00-0C
Next (later apple) 00-00-0F
Samsung 00-00-F0
MAC addresses are the address at L2
MAC addresses are possible to spoof so MAB sec not great
Some devices can't do MFA or 802.1x so MAC rules will be needed until devices get smarter.
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