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Nov 16, 2021 · MAC addresses work with the card in your device that lets it connect wirelessly to the internet, called a Network Interface Controller (NIC). MAC addresses are used to identify which device is which on your local network so that data gets sent to your computer and not your roommate's smartphone.
Jan 31, 2019 · MAC addresses are commonly used to identify your device when connecting to a network. Routers can filter out MAC addresses they don’t recognize. It’s useful to know the MAC address of your device to ensure it connects to the network properly.
Jun 22, 2017 · Change a MAC Address in Windows. Change a MAC Address in Linux. Change a MAC Address in Mac OS X. A device's MAC address is assigned by the manufacturer, but it's not to hard to change---or "spoof"---those addresses when you need to. Here's how do do it, and why you might want to.
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Jul 31, 2015 · MAC is required for a couple of reasons, the biggest of which is that IP addresses are not (necessarily) unique. Before a computer has an IP address, it typically requests one on the network by using a service called DHCP.
Jan 8, 2012 · A Media Access Control address (MAC address) is a unique identifier assigned to network interfaces for communications on the physical network segment. Logically, MAC addresses are used in the Media Access Control protocol sub-layer of the OSI reference model.
Oct 24, 2014 · Even if your computer has an IP address, it still needs a MAC address to find other machines on the same network, since every layer is using underlying layers. On the page mentioned earlier you can find some nice diagrams explaining the protocol suite in detail.
Sep 3, 2013 · Wireless access points often use MAC addresses for access control. They only allow access for known devices (MAC address is unique and identifies devices) with the correct passphrase. DHCP servers use the MAC address to identify devices and give some devices fixed IP addresses.
