MAC address changer
There are several reasons why you might want to change the MAC address of your network adapters.
- Bypassing Network Filters: Access networks that restrict connections based on specific MAC addresses.
- Enhancing Privacy: Prevent tracking by altering the MAC address of your network device.
- Testing Network Security: Simulate different devices to test MAC-based security mechanisms on your network.
- Device Simulation: Bypass network MAC filtering (allow list) by mimicking the MAC address of another device.
- The MAC Address Changer is one of the features of the Proxy Mask application.
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Note:
Some network adapters do not support MAC address spoofing.
The MAC address may appear to have been spoofed, but the internet connection cannot be made.
This is a very rare situation that only occurs with Wi-Fi adapters.
If this happens, you should restore the original MAC address by pressing the "Restore Original MAC Address" button.
What is MAC address (media access control)
Every network interface on your computer or any other networked device has its own unique MAC address.
MAC addresses are most often assigned by the manufacturer of a network interface controller (NIC) and are stored in its hardware.
Technically you cannot change hard-coded MAC address but you can spoof it by changing registry settings.
Registry Root Path:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E972-E325-11CE-BFC1-08002bE10318}\[NIC ID]
(ID is NIC (network interface controller) ID such as 0001, 0009 etc.)
Registry Name:"NetworkAddress" you can change "NetworkAddress" value to XX:XX:XX:XX:XX:XX (e.g. 0D64804FE98B omit ":" ) where value of X range from 0 to 255 (Hex 0 to 0xF)
If "NetworkAddress" exist in registry, windows expose this value as MAC address or NIC, otherwise it expose original (hard-coded) MAC address of NIC.
Why are MAC addresses unique, and what are they used for?
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Tracking Devices:
Similar to IP addresses, MAC addresses can be used to track you on a network to which you are connected.
When you connect to a public network (e.g. free Wi-Fi at Airports)
Your MAC address can be seen and logged by the connected networks.
When you intent to use such free Wi-Fi networks you should change your MAC address before connecting to public network.
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Spying:
Quoted from wiki "According to Edward Snowden, the National Security Agency has a system that tracks the movements of everyone in a city by monitoring the MAC addresses of their electronic devices"
see wiki page
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Static IP Assignment:
Routers allow network administrators to define static IP addresses to specific computers on the network by using their MAC addresses.
In this way when a computer connects to same network, it given the same IP address as always (if it has a matching MAC address).
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MAC Address Filtering (Disallow or Allow connection):
Routers has two option about filtering the MAC addresses. One "Allow MAC address list" and two "Disallow MAC address list".
They cannot be used at the same time.
Generally "Allow MAC address list" used for allowing devices with specific MAC addresses to connect to a network.
This filtering can be bypassed using the "MAC address changer" by spoofing MAC addresses.
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Network usage Time limitation:
Many airport Wi-Fi networks and other public Wi-Fi networks might offer a limited time (let's say 20 minutes) free connection and then block your MAC address from using more connection.
In this case you can use "MAC address changer" to spoof your MAC address to bypass time limitation on such networks.
This is may not be enough because such networks can use other information on your computer too (such as cookies, Computer Name (Host Name) etc.)
- Other reasons...
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