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If you want to change your network card mac address you need to use simple utility called mac changer.MAC changer is a utility for manipulating the MAC address of network interfaces
Possible usages
You’re in a DHCP network with some kind of IP-based restriction
You’ve a cluster that boot with BOOTP and you want to have a clean set of MACs
Debug MAC based routes
MAC Changer Features
Set specific MAC address of a network interface
Set the MAC randomly
Set a MAC of another vendor
Set another MAC of the same vendor
Set a MAC of the same kind (eg: wireless card)
Display a vendor MAC list (today, 6800 items) to choose from
Install MAC Changer in Debian
#apt-get install macchanger
Install MAC Changer in Ubuntu
sudo apt-get install macchanger
This will complete the installation.
If you Find your MAC address using the following command
ifconfig
eth0 Link encap:Ethernet HWaddr 00:0C:29:A8:D0:FA
inet addr:172.20.22.35 Bcast:172.20.22.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:fea8:d0fa/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:7690 errors:0 dropped:0 overruns:0 frame:0
TX packets:6399 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:4284579 (4.0 MiB) TX bytes:876317 (855.7 KiB)
Interrupt:177 Base address:0×1080
In the above example MAC Address is 00:0C:29:A8:D0:FA
If you want to configure MAC Changer you need to stop the networking services using the following command
For Debian Users
#/etc/init.d/networking stop
For Ubuntu Users
sudo /etc/init.d/networking stop
Now you need to configure your MAC address using the following examples
MAC Changer Syntax
macchanger [options] device
Examples
# macchanger eth1
Current MAC: 00:09:a5:eb:23:f7 (Hansung Eletronic Industries Development Co., Ltd)
Faked MAC: 00:09:a5:eb:23:f8 (Hansung Eletronic Industries Development Co., Ltd)
# macchanger --endding eth1
Current MAC: 00:09:a5:eb:23:f8 (Hansung Eletronic Industries Development Co., Ltd)
Faked MAC: 00:09:a5:6f:31:23 (Hansung Eletronic Industries Development Co., Ltd)
# macchanger --another eth1
Current MAC: 00:09:a5:6f:31:23 (Hansung Eletronic Industries Development Co., Ltd)
Faked MAC: 00:11:18:5b:3a:1f (Blx Ic Design Corp., Ltd.)
# macchanger -A eth1
Current MAC: 00:06:5b:f6:f3:48 (Dell Computer Corp.)
Faked MAC: 00:0d:11:93:0c:4f (Dentsply - Gendex)
# macchanger -r eth1
Current MAC: 00:0d:11:93:0c:4f (Dentsply - Gendex)
Faked MAC: 3c:f1:89:f9:1f:ce (unknown)
# macchanger --mac=01:23:45:67:89:AB eth1
Current MAC: 00:40:96:43:87:65 [wireless] (Cisco/Aironet 4800/340)
Faked MAC: 01:23:45:67:89:ab (unknown)
# ./macchanger --list=Cray
Misc MACs:
Num MAC Vendor
— — ——
065 - 00:00:7d - Cray Research Superservers,Inc
068 - 00:00:80 - Cray Communications (formerly Dowty Network Services)
317 - 00:40:a6 - Cray Research Inc.
Here is the list of available options for MAC Changer
-h, -help
Show summary of options.
-V, -version
Show version of program.
-e, -endding
Don’t change the vendor bytes.
-a, -another
Set random vendor MAC of the same kind.
-A Set random vendor MAC of any kind.
-r, -random
Set fully random MAC.
-l, -list[=keyword]
Print known vendors (with keyword in the vendor’s description string)
-m, --mac XX:XX:XX:XX:XX:XX
Set the MAC XX:XX:XX:XX:XX:XX
If you completed the your MAC address changes you need to start the networking service using the following command
For Debian Users
#/etc/init.d/networking start
For Ubuntu Users
sudo /etc/init.d/networking start
January 4th, 2007 at 9:54 pm
It is possible to change the mac address with the ifconfig command as well, but without most of the features of MAC changer.
Just write eg.: ifconfig eth1 hw ether 01:23:45:67:89:ab
January 8th, 2007 at 10:45 pm
And this is easier??? then:
ifconfig eth0 down hw ether 00:00:00:00:00:01
ifconfig eth0 up
January 12th, 2007 at 1:05 pm
It is also possible to set this in you /etc/network/interfaces, so it stays active even after reboot. I don’t see much point in this software?
/etc/network/interfaces
—–
auto eth0
iface eth0 inet dhcp
hwaddress ether 01:23:45:67:89:AB
—–
January 15th, 2007 at 6:00 pm
i also think that programme is useless except the manufacture database
January 30th, 2007 at 2:19 am
I think that program is great I need a different mac ever boot how do I load macchanger on boot?
February 6th, 2007 at 11:25 am
its not working any more
August 10th, 2007 at 8:10 pm
You guys are missing the point of this software- it’s to get a DIFFERENT, RANDOM MAC every time you bootup.
October 10th, 2007 at 9:05 pm
I’ve created a script to run at the start at a session that set a new and random MAC address for my network connections on my computer at startup using this macchanger tool. This is tested on my Ubuntu 7.04 installation with Gnome Network Manager removed and Wicd installed instead. eth0 is my wired connection and eth1 my wireless connection.
1. Create a sh script with these commands to E.G. “randomMac.sh”:
killall /opt/wicd/daemon.py # closes use of eth1 by Wicd
sleep 1
ifconfig eth1 down # deactivate eth1
macchanger -A eth0 # change mac address for eth0
sleep 1 # wait a little to get different random mac addresses
macchanger -A eth1 # change mac address for eth1
ifconfig eth1 up # activates eth1
sleep 1
/opt/wicd/daemon.py 2> /dev/null # starts Wicd daemon again
sleep 4
/opt/wicd/tray-dapper.py 2> /dev/null # starts the Wicd tray
2. Read the current mac addresses with the tool ifconfig.
3. Run the script with the command “sudo sh randomMac.sh”.
4. If the mac addresses is changed correct with the script then add the command “sudo sh randomMac.sh” to your session.
This works for me. If gnome network manager is used instead of Wicd then some other way of closing it’s use of the wireless connection so macchanger can change the mac address.
January 30th, 2008 at 3:37 pm
People! What are you talking about??? I want to change my Mac address and I know nothing about computers! What shall I do? I don’t trust that softwares you can dawnload from the internet. Can you tell me how to do it step by step? Please???
February 22nd, 2008 at 10:00 am
00-40-F4-CE-92-33
The above MAC number is live number in my PC, now i want to change my MAC number to 00-19-D1-1E-E2-12.
how to change my MAC number. If once changed any problem occur in feature.
sabai