today I wanna point out a very easy script that I made for iPhone (cangeMAC.pl).
It's pretty useful changing MAC address, especially if you need a filtered wireless connection.
First of all you gonna use that script (sniffer.pl) to grab the allowed connection:
Or if you prefer, you may use tcpdump by command line (thank to iPhone Terminal).
After that, you gonna use this little, but useful script changing your default MAC address :
And Here you are; just typing ifconfig on your iPhone Terminal you'll see your new MAC address.