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E-mail & Computing
Finding your IP and MAC Addresses

Finding your IP and MAC Addresses

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 Address.

For Macintosh OS X, open a Terminal window and type ifconfig -a. Look for the value of ether.

Reporting Security Problems

Send reports of security incidents, attacks, or questions to security@columbia.edu