How to Change a MAC Address in 10.5
- 1). Log in to your computer with the admin account, open a new Finder window and go to the "Applications" folder. Look for the "Utilities" folder and click on the "Terminal" launcher inside.
- 2). Type the following command into the Terminal: "ifconfig en1 | grep ether" and press "Enter." The result should look like "ether f8:12:e6:c6:24:9f." The string of numbers and letters is your current MAC address. Write this number down, otherwise you'll have to reboot your computer to restore it.
- 3). Decide on a new MAC address. In OS X 10.5, the hex value is written as "aa:bb:cc:dd:ee:ff." Use all 12 values because an incomplete MAC address can result in network connectivity problems.
- 4). Enter the following command into the Terminal: "sudo ifconfig en1 ether "aa:bb:cc:dd:ee:ff" and replace "aa:bb...." with your desired MAC address. Press the "Return" key and your MAC address will change.
- 5). Verify your new MAC address in 10.5 by entering "ifconfig en1 | grep ether" again. The Terminal should return the new value that you just entered. Reset your computer or use the "sudo ifconfig en1 ether" command with the original values to restore your MAC address to its default settings.
