Based on the Mac address, the Internet service provider can control the access to the internet. The most common use of MAC address is access filtering. For example, you may have two different MAC address for Ethernet and for Wifi. Actually, there are as many addresses as network interfaces are supported by Media Access Control. It is important to understand that there are several MAC addresses possible. In short, the IP address has a strategic aim, indicating where the packet of information should be transferred globally, while the MAC address has a tactical value and it contains information regarding the nearest device to which the packet has to be transmitted. In fact, they are used simultaneously but have different purposes and meanings. The average user, who is not a computer geek, often confuses the IP and MAC addresses and cannot clearly explain where each of them is used. Here is a MAC address example: 00: 1B: 44: 11: 3A: B7. The MAC serial number consists of six groups of two characters separated by colons. It is actually used for information exchange between computers on the local network. While the IP address is logical and it can be changed by the network administrator, the MAC address is on the hardware and it is permanent.

The MAC address is registered on the network card when it is created in the factory. MAC ID (Media Access Control) is a unique digital number assigned to each computer on the network, more precisely not to a computer, but to a network card.

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Wifi network mac address acess