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NIC MAC Address Change How-to

Written by Shifter / The Real Deal

Saturday, 10 November 2007

Here is one way to change your NIC (Network Interface Card) MAC address (not to be confused with your modem's MAC address).

Download a program titled "MacMakeUp" from Here:

http://www.gorlani.com/publicprj/macmakeup/macmakeup.asp

The program doesn't install anything. You can leave it on your desktop and run it from there.

Upon starting the app, the first thing you'll want to do is choose the "Manufacturer" of your NIC card from the drop-down menu. A "New address" will now be displayed directly above it. The first 6 numbers/letters are to be left alone, but you'll need to change the remaining 6. After you have selected the remaining 6 numbers/letters of your choice, click the "Change" button. In the bottom part of the window, you will see that the program is shutting down/restarting your connection. Your new address will be complete.

Note:
If you see a message stating "Can't find OID database" written just to the right of Manufacturer, you can just click the button titled "Generate random" to get a New address. From there, click the "Change" button. In the bottom part of the window, you will see that the program is shutting down/restarting your connection. Your new address will be complete.

Before changing you NIC MAC address, make a note of your current one.

To do this through XP SP1, browse to:

Start, Control Panel, Network Connections
Right–click the connection you want information about, and then click [Status].
In the Network Connection dialog box, click [Support] tab.
For additional information, click [Advanced] tab.
Write down your Physical Address.

Note:
For SP2 (Service Pack 2) users, you will see a Details button under the support tab (there will be no Advanced tab). Select it, and then write down your Physical Address.

Changing you NIC's MAC Address (This has nothing to do with the Cable Modems MAC) is very important. A few reasons being that if you hook up and plug-in a cloned modem into the same NIC card which had a different ISP connection i notice the following:

--> your Subnet mask will most likely be different.

-> Connection-specific DNS Suffix will also most likely be different.

--> ofcourse IP address assigned by the server will be a new one from the one you had before.

HOWEVER, if you have the modem connected to the same NIC that you were previously using. The physical address of your hardware (some sort of id) will be the SAME; if certain ISPs notice you have the same Physical address and more technically speficfic the entire Transport Name of your hardware. such as the following:

Physical Address Transport Name ========================================================
00-10-B5-XX-XX-XX \Device\Tcpip_{4FXX1XXC-XXXX-XXXX-BEXX-0FDXXB9XXXXX}

It may be very likely that a red flag may be raised. So after all, this tool that this one cool dude has posted would be very useful. Now, i will try to use it, i know that the program will definately change the MAC of the NIC; but i will see if this program is good enough to not just change the physical address (MAC id) of the NIC but also change the entire Transport Name technical id of the NIC.
I hope it does. lets see...

By the way to those of you interested in seeing not just your NICs MAC but your Transport Name as wel just go to your command prompt (yes that scary looking screen we al feared when we were all learning the basics about computers. hahaha) and type:

GETMAC.

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