If you are connected to the Columbia University network, you can use this script to determine your IP and MAC addresses.
On Windows operating systems, you can determine your IP and MAC
addresses by opening a command prompt windows (Start -> Run -> cmd)
and typing ipconfig /all. Look for the value of Physical
For Macintosh OS X, open a Terminal window and type ifconfig
-a. Look for the value of ether.
Send reports of security incidents, attacks, or questions to firstname.lastname@example.org