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Changing Your MAC Address

Posted by Parth Barot on January 17, 2007

MAC stands for Media Access Control and in a sense the MAC address is a computer’s true name on a LAN. An Ethernet MAC address is a six byte number, usually expressed as a twelve digit hexadecimal number (Example: 1AB4C234AB1F). IPs are translated to MAC address by a protocol called ARP (Address Resolution Protocol). Let’s say a computer with and IP of 192.168.1.1 wants to send information to another computer on the LAN that has an IP of 192.168.1.2 . First 192.168.1.1 will send out a broadcast to all stations on the LAN asking who has the IP 192.168.1.2. Then the box that has 192.168.1.2 will respond to 192.168.1.1 with it’s MAC address which is cached in 192.168.1.1’s ARP table for later use.

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