A Utility to Spoof MAC addresses in OS X?

Question

Is there a menu bar style tool, or maybe a GUI program that would allow me to switch / spoof MAC addresses for the Airport / WiFi connection on OS X?

Answer 1

You really can pass up the GUI interface for this one - it's a one-liner:

sudo ifconfig en1 lladdr aa:bb:cc:dd:ee:ff

If you absolutely want it to be easy, use an apple script so you can click it in your menu bar. This discussion can help with syntax.

tell application "Terminal"
do script "/path/to/script"
end tell

The best reference is here, though there are handy too:

http://josteinb.com/2009/10/spoofing-your-mac-address-in-snow-leopard/
http://www.macgeekery.com/gspot/2006-04/mac_address_spoofing
http://www.iclarified.com/entry/index.php?enid=7673

Answer 2

Yes, I know I can do it from the terminal or via applescript, but I was hoping for a menu bar utility.

And for the record, I actually find that I have to do this to spoof the mac-address on OS X 10.7:

//disassociate from airport - sometimes you need to run it twice
airport -z
airport -z

//find the current mac address
ifconfig en1 | grep ether

//i find I usually need to run this command at least twice before it works
sudo ifconfig en1 ether 00:e2:e3:e4:e5:e6
sudo ifconfig en1 ether 00:e2:e3:e4:e5:e6
sudo ifconfig en1 ether 00:e2:e3:e4:e5:e6

//check the mac again to see if it has changed
ifconfig en1 | grep ether

To get the airport terminal command you may need to add this:

alias airport="/System/Library/PrivateFrameworks/Apple80211.framework/Versions/Current/Resources/airport"