Duo Multi-factor Authentication

About Duo MFA

Duo Multi-Factor Authentication (MFA) adds a second step to sign in processes, helping keep secure the personal, educational, financial, medical, and research data at Caltech. As part of on-boarding, new Caltech users will install the Duo Mobile smartphone app which will become the default Duo second-factor method.

Signing In With Duo

After successfully entering your username and password, Duo will prompt you to approve the sign in with a notification on your smartphone, or give you the option to use one of your other configured second-factor options. Select Approve to complete the authentication. If you receive an unexpected Duo push notification, select Deny.

Using Duo Push

Managing MFA Methods

In addition to the default Duo Mobile Push method, you can optionally configure alternate methods. Some methods involve a device you can buy, such as a Yubikey authenticator. Others involve features your existing devices might already support, like Apple Touch ID or Windows Hello.

About Duo second-factor options Managing Duo second-factor options

Troubleshooting Duo Sign Ins

Duo account locked or disabled Using Duo without network access Don't have my MFA device with me Duo says phone cannot be added

Deploying Duo Protection (IT Admins)

IMSS is ready to assist you with adding Duo MFA protection to your devices and systems.

Duo for Windows Duo for Linux