Using Duo multi-factor authentication while traveling internationally

You can use multi-factor authentication (MFA) around the world. Using the Duo Mobile app on your Android or iPhone is recommended because it gives you the flexibility to accept a verified push notification while you're in the US or abroad when you have access to mobile data or a wireless network, or use stored passcodes when you don't have access to wireless at all.

Review the scenarios below to determine how you can keep your MFA active while you travel.

 

You will only have access to your US phone: Use Duo Mobile (Limited or No Connectivity)

Scenario: You will have access to your US phone. Your phone won't have access to mobile data, but may be able to use wifi.

Solution: Make sure your phone is registered to use Duo Mobile. If your phone is not currently registered, download Duo Mobile.

Before you leave the US:
  1. From the App Store or Google Play, download Duo Mobile onto your phone.
  2. Register or Re-activate your Mobile Device.

You will use an international phone number in addition to having your US phone: Add that phone number to Duo

Scenario: You will have access to your US phone. Your phone won't have access to mobile data, but may be able to use wifi. You will also have access to an international phone.

Solution: Make sure your US phone is registered to use Duo Mobile. If your phone is currently registered to receive phone calls only, download Duo Mobile and change your registration type. Then add your international phone to your MFA profile yourself.

Before you leave the US:
  1. From the App Store or Google Play, download Duo Mobile onto your US phone.
  2. Register or Re-activate your Mobile Device.
Once you're in your destination country:
  1. From the App Store or Google Play, download Duo Mobile onto your international phone.
  2. Register or Re-activate your Mobile Device.
    • Since MFA can store multiple numbers, don't remove your existing US phone number. This way you can still use your US phone when you return to the US.

You will only use an international phone number and you know that number: Contact the IT Support Center before you leave the US

Scenario 1: You are taking your US phone with you and swapping out the US SIM card for a SIM card you'll use in your destination country. You will swap the US SIM card back into the phone when you return to the US.
Scenario 2:You will not have access to your US phone, but will have an international phone in your destination country, and you already know that phone number.

Solution: Provide the IT Support Center with information about your international phone so it can be manually registered to your MFA profile. Then when you're in your destination country, reactivate your phone using Duo Mobile.

Before you leave the US:
  • Contact the Northwestern University IT Service Desk at 847.491.4357 (1-HELP). 
    • When Calling: Please have a valid Wildcard or valid government ID available for identity verification if necessary. 
  • If you are unable to contact Northwestern University IT by phone for assistance, send an email message to servicedesk@northwestern.edu. Be sure to include your NetID and a description of your situation. Our agents will review your ticket and follow up with potential next steps.
Once you're in your destination country:
  1. Swap the SIM card in your phone, if applicable.
  2. Make sure you have Duo Mobile downloaded onto your international phone from the App Store or Google Play.
  3. Register or Re-activate your Mobile Device.
    • Since MFA can store multiple numbers, don't remove your existing US phone number. This way you can still use your US phone when you return to the US.

You won't have access to any phone: Consider purchasing a YubiKey before you leave the US

Scenario: You won't have access to any phone in your destination country.

Solution: Consider purchasing a YubiKey.

You've already left the US: Contact the IT Support Center

Scenario: You've already left the US and didn't register an international phone.

Solution: You will need to contact the IT Support Center to register your international phone.
  1. From the App Store or Google Play, download Duo Mobile onto your phone.
  2. Contact the Northwestern University IT Service Desk at 847.491.4357 (1-HELP). 
    • When Calling: Please have a valid Wildcard or valid government ID available for identity verification if necessary. 
  • If you are unable to contact Northwestern University IT by phone for assistance, send an email message to servicedesk@northwestern.edu. Be sure to include your NetID and a description of your situation. Our agents will review your ticket and follow up with potential next steps.

 

 

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Details

Article ID: 1398
Created
Thu 5/12/22 12:39 PM
Modified
Tue 8/13/24 4:29 PM