Network Interface Cards (NICs) used in computers are hard-wired with a hardware address called a Media Access Control or MAC address. Routers and other network devices use this address to enable the computer to communicate on a sub-network or network. At times, you may wish to override the hard-wired address with a different address, an action known as “spoofing” or “masquerading”. This strategy can be used to test network configuration or to bypass a router or firewall that filters by MAC address on a network. Warnings Writer Bio

How to Connect a Computer to a Mac Address - 79