What is a MAC address?

Also known as an adapter address, hardware address, or physical address, a MAC address is a unique serial number on network adapters used to identify the device or computer. This is intended to be a permanent piece of information, however it may be changed via software such as the Technitium Mac Address Changer. The reason some people may want to change their MAC address is as follows: Sometimes when a website needs to ban a user from accessing it, they will choose to ban the IP address. However, it’s quite easy to change your IP address via a web proxy or other similar trick, such as a VPN (Virtual Private Network). The next step they may take is to simply ban the accessing machine’s MAC address, which is supposed to be unchangeable. However, it is able to be changed, and is also known as MAC spoofing. MAC spoofing may also be used to impersonate other computers on the network, or be used to hide from the network all together.