A MAC address is an identification code. It's used to define physical devices in a network, so that the network knows exactly which devices it is in communication with. There are plenty of practical reasons to have MAC addresses.
Typically a MAC address remains unchanged forever, defining a specific network interface for as long as it loads (that's sort of the point). However, this ID code may be changed, and we are going to discuss how-and why-to do it.
Let's talk about spoofing
Changing your MAC address, especially when doing it frequently, is called spoofing. The word "spoofing" does have a negative connotation after all, it makes it sound like you're trying to fool someone. However, there are many reasons to change your MAC address. Many people do it for privacy. Switching MAC addresses regularly makes it very difficult to track your device and how you are using it. If you are using time-out Wi-Fi that only gives you, say, an hour of free Wi-Fi access (some businesses, like airports, do this), you can keep getting free Wi-Fi by switching your address from time to time.
However, there are some downsides to spoofing. The big one is that often has security filters in place that only allow certain employee devices to access their networks. If you spoof an address, the network will no longer recognize you. This is why it's important to record your original MAC address before you change it!
Download a MAC address changer It's also why spoofing a work device is often a bad idea-save this trick for your personal, non-BYOD computers.
We recommend that you start here because this is a simple and very effective method. MAC address changers are software tools that you can download. When they are up and running, they show that they could not talk about all the network connections on their computer, including the MAC addresses and network speed. They include options to change MAC addresses and set certain rules for making the change random, making the change persistent, restoring original settings, and so on … all located on one pop-up window. It's a fun little solution. We recommend using the Technitium Mac Address Changer which has a good job of keeping Windows 10 up.
(Optional) Change the address manually.
If you it is a way to change the address manually on Windows. Head over to your Control Panel Network Connections . This will show you all the connected devices you currently have on this network. Properties . Advanced Property Option Network Address or MAC Address or something similar , This will bring up the address in the small Value box.
Check your MAC address
There are some address changers designed for MacOS ( MacSpoofer is one of the most notable), but the process to reset your address is so simple there is no need for one. First, you'll want to check and record your MAC number . You see the Wi-Fi sign in the upper right corner of your MacOS? Hold down the Option key and click the Wi-Fi button. Address in gray letters so there's no confusion.
Open a Terminal  Terminal app Applications choosing Utilities and selecting Terminal .
If you want to specify a new set of numbers, you may want to use an address that is easy to remember "Sudo ifconfig en0 ether aa: bb: cc: dd: ee: ff " although replace the alphabet with the code you want. If this does not work, try using "en1" instead of "en0" in the command. Interface Name .
If you want to set a random number instead, type in (or maybe just paste ), "Openssl rand -hex 6 | sed's / ( ..) / 1: / g ; s / . $ // '| xargs sudo ifconfig en0 ether "and hit enter. Again, this en0 with your specific interface name. It's usually better for a MAC address.
A couple notes
This is not always a clean process. Driver compatibility, syncing problems, network settings, and other issues may put up roadblocks. Sometimes, you may have to change your network.
So, you should restart your network. Wi-Fi itself, then shut down the Wi-Fi on your device and restart it again.