A MAC address is the unique identifier that is assigned by the manufacturer to a piece of network hardware (like a wireless card or an ethernet card). MAC stands for Media Access Control, and each identifier is intended to be unique to a particular device.
A MAC address consists of six sets of two characters, each separated by a colon.is an example of a MAC address.
To identify the MAC address of your own network hardware:
In practice, you may need to modify or “spoof” a MAC address. For example, some internet service providers may require that a specific MAC address be used to access their service. If the network card stops working, and you need to swap a new card in, the service won’t work anymore. In such cases, you would need to spoof the MAC address.