This is done to keep the network safe from strangers because, without it, anyone can access the network.
The router is set in such a way that it will accept only the specified MAC address. One of these applications is in the wireless networks filtering process. There are many applications of MAC addresses.
For a wireless device, click “Settings,” and the MAC address of the wireless device will appear as a hardware address. For a wired device, the MAC address will appear as a hardware address on the right side. Select the device from the left pane that is Wi-Fi or wired. Go to the Activities Overview and type “network.”. To find out the MAC address for your network hardware, follow the steps listed below: The following include the OUIs of some well-known firms:ĭell: 00-14-22, Cisco: 00-40-96, and Nortel: 00-04-DC. This will be helpful in recognizing the manufacturer. This is called the Organizationally Unique Identifier (OUI). Most manufacturers, like Dell and Cisco, use a unique identifier in the MAC address. A MAC address contains six sets having two characters each set is separated by a colon. An example of a MAC address is 00:1C:45:11:3A:B7. 
The identifier will be unique for each device. The computer is allowed to connect to the network using the network interface controller, which is a computer circuit card. A MAC address is stored in hardware and is normally assigned by the manufacturer of a network interface controller.
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