Did you know that the older verifone ATMs have a keyless operator menu?

All you gotta do is:
1) Hit the four corner buttons (usualy 1, 3, 7, and 9)
2) Hold those buttons until the menu pops up.
3) Select IFCONFIG >> MacADDR >> IP >> Settings
4) Write down the IP for later nmap scans.

I'm not gonna go too in depth with this one, but there's a lot of fun to be had with it!