Below is a table that highlights the differences between IP addresses and MAC addresses. This is exactly why MAC addresses are only important to the Local Area Network (LAN) and are not relevant to the data stream that leaves the LAN. The MAC address identifies a device locally whereas an IP address identifies the device globally. These are both used to identify a device but they do it differently. In order to facilitate communication between devices on a network, two types of addresses are necessary: MAC addresses and IP addresses.

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Hence if your laptop has an Ethernet port and Wi-Fi built-in, it means it has to have two MAC addresses.

How? See, each network interface in the device must have its unique MAC address paired with it. Important to note is that one device, such as a laptop, can have multiple MAC addresses. This is done by the manufacturer during production and cannot be changed.

The MAC address is attached to the Network Interface Card (NIC) on all devices that can connect to the internet. Technically, a MAC address can be defined as a physical address that uniquely identifies a device on a specific network. MAC is an acronym for Media Access Control and is also known as Burned In Address (BIA) or physical address or hardware address.

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The link/ether field associated with your ethernet interface is your MAC address. The 'Ethernet Address' field for the ethernet hardware port is your MAC address. Type ' networksetup -listallhardwareports'.

Click on the Advanced button on the right, and then the Hardware tab.

Make sure that the ethernet interfaces is selected on the left side.

Go to the Apple menu > System Preferences > Network (under 'Internet and Wireless').

Make sure you're looking at your ethernet interface and not your wireless interface. The Physical Address value for your ethernet card is your MAC address. When the command window appears, type ipconfig /all. For PCs running Windows 8 and later, launch the 'Command' program by searching for it in your applications list. Finding the Ethernet MAC Address Microsoft Windowsįor PCs running Windows 7 and earlier, Go to Start Menu > Programs > Accessories > DOS Command Prompt. Both wired and wireless network interfaces have these addresses. It is a 12 digit hexadecimal number usually delimted by colons, e.g.

Berkeley Statistics Annual Research Symposium (BSTARS)Įvery computer's network interface has a unique identifer called a MAC address.

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How to know pc mac address