If your PC has both Ethernet and Wi-Fi capabilities, that means that it has two separate adapters - one wired and the other wireless. This entire process is called MAC filtering. Any PC whose MAC address is on a whitelist is allowed access to the network ports, while those on blacklists are denied access or blocked. If you want to manage access rights to a network, it can be done easily using these MAC addresses. A Media Access Control (MAC) address is a unique identifier assigned to each network card - and by extension, the PC to which it belongs - in a computer network. All computers use a piece of hardware called a network interface controller (also called a network card) to connect to all networks, local and wide.
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