When all the parameters are displayed, locate and write down the MAC address. 
Type the following command: /sbin/ifconfig (on some distributions, just ifconfig). It will look something like the following: 00:0B:4D:2F:62:7A The number next to Ethernet ID is you MAC Address. Click on Advanced from the lower right. Select Ethernet from the left hand side. From the dock, select System Preferences. It may also be listed as "Hardware Address" or "Physical Address." It will look something like the following: 00 0B 4D 2F 62 7Aįor Macintosh (OS 10.5 and higher) Systems Write down the MAC Address for your adapter. MAC addresses are usually written in one of these formats: MM:MM:MM:SS:SS:SS. A MAC address is a 12-digit hexadecimal number (48 bits in long). The MAC Address and other parameters will be displayed in the DOS window. A MAC algorithm accepts as input a secret key and an arbitrary-length message to be authenticated, and outputs a MAC address. The MAC address is manufactured into every network card. 
It is also known as a physical or hardware address. A MAC address is a hardware identification number that uniquely identifies each device on a network.
At the prompt, type the following: ipconfig /all MAC Address or media access control address is a unique ID assigned to network interface cards (NICs). This number is often imprinted on the network card however, you may query your computer for the number, using one of the following methods: The Ethernet MAC Address is a unique identifier for network cards, of the form 05-A8-34-C3-67-B4 or 05A8342367B4 (6 pairs of digits and characters in the range A-F, which might or might not be separated by hyphens).
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