Security Basics mailing list archives

RE: RE: Changing the mac address on Windows 2000 and XP


From: "Kumra, Vipul" <vkumra () ipolicynetworks com>
Date: Thu, 7 Jul 2005 09:48:59 +0530

Hi Bob,

I know Pranav is asking to *mask* his machine (aka "MAC") address, not his IP address. Just try what I've suggested and 
you will see that I'm talking about changing the MAC address of the machine.

You can even look at the link provided by "Anish Shaikh" in his email.

http://dotaniz.blogspot.com/2005/05/inside-out-of-mac-addresses.html


----------------------------------
To Change MAC address on Windows 2000, XP and 2003 :-

This is depending on the type of Network Interface Card (NIC) you have. If you have a card that doesn't support Clone 
MAC address, then you have to go to second method.

Go to Start->Settings->Control Panel and double click on Network and Dial-up Connections.

Right click on the NIC you want to change the MAC address and click on properties.

Under General tab, click on the Configure button

Click on Advanced tab

Under Property section, you should see an item called Network Address or "Locally Administered Address", click on it.

On the right side, under Value, type in the New MAC address you want to assign to your NIC. Usually this value is 
entered without the - between the MAC address numbers.

Goto command prompt and type in ipconfig /all or net config rdr to verify the changes. If the changes are not 
materialized, then use the second method.

If successful, reboot your systems.

MAC's On 2000 , XP and 2003 can also be Changed With a Tool named SMAC.
------------------


Regards,
Vipul Kumra



-----Original Message-----
From: Bob Radvanovsky [mailto:rsradvan () unixworks net]
Sent: Thursday, July 07, 2005 5:38 AM
To: Kumra, Vipul
Subject: Re: RE: Changing the mac address on Windows 2000 and XP


He's asking to *mask* his machine (aka "MAC") address, not his IP address.

-rad

At Wed, 6 Jul 2005 09:56:25 +0530, you wrote:

Hi Pranav,

-------
Is there any way to change the mac address of a LAN card in Windows 
2000 and Windows XP?
-------

This can be easily done, right click on the local area connection - click on properties - then on configure button. 
Now under the advance tab you will find something like "locally Administered address" (in case of windows XP) and 
"Network Address" (win2k). Here you can give the new address :)


Vipul Kumra


-----Original Message-----
From: Pranav Lal [mailto:pranav.lal () gmail com]
Sent: Tuesday, July 05, 2005 9:56 PM
To: security-basics () securityfocus com
Subject: Changing the mac address on Windows 2000 and XP


Hi all,

Is there any way to change the mac address of a LAN card in Windows 
2000 and Windows XP?

As a corollary to the question, how would one detect if a computer 
was changing its mac address? This is assuming that the network on 
which this machine is connected has DHCP enabled.

Pranav


-- 
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Bob Radvanovsky, CISM, CIFI, REM, CIPS
[/unixworks] "knowledge squared is information shared"
rsradvan () unixworks com | http://www.unixworks.com
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