macchanger on backtrack 5

macchanger

Introduction

macchanger  is a Linux utility for viewing/manipulating the MAC address for  network interfaces.
macchanger is created by Alvaro Lopez Ortega . 

How to open macchanger

• To open manchanger , follow the path -
• BackTrack > Miscellaneous >  Miscellaneous Network > macchanger 
• See the below image for more help - 

Step 1 : 

• Use ifconfig command to view ip and Mac Address .
• See the below image for more details -

Step 2: Down your interface 

• To down your interface , press enter the command .
• Command : ifconfig eth0 down .
• See the below image for more details - 

Step 3 : Changing Mac Address 

• To change mac address use the command .
• Command : macchanger -r eth0
• Your mac is changed now - 
• See the below image for more details - 

Step 4: Up your interface 

• To up your interface , use the command .
• Command Used : ifconfig eth0 up
• See the below image for more details - 

This is how we can use this tool to change the mac address