Duo Security and Travel

Case Western Reserve has incorporated two-factor authentication into the Virtual Private Network (VPN). Two-factor authentication provides added security by prompting you for a unique code in addition to your password. The unique code is usable only once, and it is accessible from the device of your choosing (typically your cell phone). Each time you log in, you are issued a new code.

If you expect to travel outside of the United States, you should enroll in Duo Security (CWRU’s two-factor authentication service) before you leave the country. To begin enrolling, visit Duo Security. There, you will find helpful training videos and a link to enroll your device.

If you are a first-time user and are outside of the United States, contact the UTech Service Desk at 216.368.HELP (4357) or help@case.edu for assistance with enrolling.

Emergency codes

If you are traveling, you should obtain emergency codes in advance of your trip. These one-time-use codes are used for emergency logins, such as a dead phone battery, or a lost or stolen phone. There are two ways that you may obtain emergency codes:

  1. Contact the UTech Service Desk at 216.368.HELP (4357) or help@case.edu in advance of your trip; they will send the emergency codes to your phone through a text (SMS) message
  2. When logging into the CWRU Virtual Private Network (VPN), type SMS in to the “second password” field and five emergency codes automatically will be sent to your phone through a text (SMS) message

When you receive your emergency codes, write them down and store them in a safe place. When you use the last code in the list of codes sent to you, the system will send you another five codes through a text (SMS) message.


A YubiKey is a small, physical device that connects to your computer using a built-in USB connection. A YubiKey generates a unique code that works with Duo Security (CWRU’s two-factor authentication service). When traveling abroad, YubiKeys are a great way to make sure that you always can log in to the VPN.

To purchase a YubiKey, visit amazon.com/Yubico-Y-002-YubiKey-Standard/dp/B00LM8U5X6. When your YubiKey arrives, contact the UTech Service Desk at 216.368.HELP (4357) or help@case.edu. They will ask you for the serial number on the device, and enroll it for you.

To ensure that your YubiKey is enrolled in Duo Security, plug the YubiKey into the USB port on your computer and navigate to the Enrollment page from your web browser. When the green light on the device is list, touch it with a finger for approximately two seconds.

To use an enrolled YubiKey with the VPN, simply place your cursor in the “second password” field on the VPN log in screen. The YubiKey will generate a unique code so that you can proceed to log in to the VPN.