change mac address in linux

How To Perform The Attack:
The tool we will be using is "macchanger". First you will need to install it.

Code:

apt-get install macchanger

or

Code:

yum install macchanger

First because we cannot change the mac address on an active card we need to run

Code:

ifconfig wlan0 down

You will leave it down until after the mac address as been changed.

To view the list of options for this tool you can run

Code:

macchanger --help

To view a list of available commands for this application.


If you are looking to spoof a specific device you can get the prefix for the mac address from the link I provided above or by running the command

Code:

macchanger -l

So if you wanted to to spoof say a cisco device you would do

Code:

macchanger -m 00:e0:f9:52:72:f6 wlan0

Wlan0 would be the device in which your trying to spoof the mac for.
If successful we will see

Then after this you would run

Code:

ifconfig wlan0 up

If you are not bothered about specifying your mac address as a specific device you can run

Code:

macchanger -a

Which will select a random vendor and spoof it
or

Code:

macchanger -r

Which won't focus on vendors and just randomly set the mac address

I hope this was informal, if you have any questions feel free to ask.