- Change or Spoof a MAC Address in Windows or OS X
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- Change Windows MAC Address
- How to Change a Computer's Mac Address in Windows (with Pictures)
To pull off a denial of service attack, for instance assuming the MAC of the gateway to a sub net might cause traffic problems. All it takes is two easy to script commands: Stefan Person sent me the following note that should help you get it to work: To determine your old mac-address: Click 'Join Other Network Allow it to attempt a connection and then go ahead and cancel the request.
Your card is now deactivated allowing us to proceed with the following command: After Notes: Pratt emailed me some other notes on changing your MAC address on different platforms and in different ways: BSD 1 Bring down the interface: AA" 3 Bring up the interface: If you have a card that doesn't support Clone MAC address, then you have to go to second method.
Usually this value is entered without the "-" between the MAC address numbers. If the changes are not materialized, then use the second method. Method 2: Do not use "Regedit". Double click on it to expand the tree. The subkeys are 4-digit numbers, which represent particular network adapters. You should see it starts with , then , , and so on. Method 3: Use the program Etherchange from http: You can also disable and re-enable your adapter within Windows for the change to become effective without rebooting.
Check that the changes took effect. It should be your new MAC address. Method 2.
Find your network adapter's ID information. In order to easily identify your network adapter in the Windows Registry, you'll want to gather some basic information about it through the Command Prompt.
Change or Spoof a MAC Address in Windows or OS X
Note the Description and Physical Address for the active network device. Ignore devices that aren't active Media Disconnected. Type net config rdr and press Enter. Open the Registry Editor.
This will open the Registry Editor, which will allow you to change the settings for your network card. Making incorrect changes to the registry can cause your system to malfunction. Navigate to the registry key.
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Expand it by clicking the arrow. Find your adapter. There will be several folders labeled "", "", etc. Open each of these and compare the DriverDesc field to the Description you noted in the first step. Right-click on the folder that matches your device.
Change Windows MAC Address
For example, if the "" folder matches your device, right-click on the folder. Name the new value "NetworkAddress".
Double-click the new Network Address entry. In the "Value data" field, enter your new MAC address. Ensure that the MAC address is formatted properly.
Some adapters especially Wi-Fi cards are unforgiving of MAC addresses changes if the first octet's 2nd half isn't a 2,6,A,E or begins with a zero. This requirement has been observed as far back as Windows XP and is formatted as: Should I do a system backup?
How to Change a Computer's Mac Address in Windows (with Pictures)
There are many MAC addresses in the world, so the chances of having the same one on the same network are slim. Don't worry about it unless you have changed two devices to that MAC address. You don't have to do a backup because it's something that will reset if you delete the entry and then restart your computer. Now you can simply compare the MAC addresses listed here with the one you saw via System Preferences.
Now that you have a new MAC address, you can change the current one using the following command below. In order to do this, you need to be logged in as an Administrator or you have to enable the root account in OS X. Just login as an admin and you should be able to run the command just fine. It will ask you for your password, though, before changing the MAC address. You need to first disconnect from any networks and then run the command. Surprisingly, disconnecting from a wireless network in OS X is not intuitive at all. You have to press and hold the Option key and then click on the WiFi icon to see the disconnect option.
So here is a rundown of all the commands I ran in order to get the current MAC address, generate a random one, update the MAC address and then verify to make sure it had actually changed.
- Change or Spoof a MAC Address in Windows or OS X!
- Top 10 Best Free MAC Address Changer Tools for Windows!
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As I mentioned earlier, this is definitely not as straightforward as the process is on Windows, but you should be able to do it if you simply copy and paste the commands above. If you have any questions, feel free to post a comment. Founder of Online Tech Tips and managing editor. He began blogging in and quit his job in to blog full-time. He has over 15 years of industry experience in IT and holds several technical certifications.