To register your YubiKey you will need its Public ID, Private ID, and Secret Key. You respond by touching a button on your YubiKey, which generates and transmits a string of 32 characters to complete your authentication. After you have registered a YubiKey for multifactor authentication, when you log in to one of our clusters you will be prompted for a one-time password (OTP). Different models can fit in USB-A, USB-C, or Lightning ports, and some also support near-field communication (NFC) for use with a phone or tablet.Īmong the many protocols supported by YubiKeys, the one which works with SSH connections to our clusters is the Yubico One-Time Password (OTP). If you do not have a smartphone or tablet, do not wish to use your phone or tablet for multifactor authentication, or are often in a situation when using your phone or tablet is not possible, then a YubiKey is your best option.Ī YubiKey is the size of a small USB stick and costs between $50 and $100.

Under Register a device, click on Duo Mobile.Ī YubiKey is a hardware token made by the Yubico company.

Connect to your account and select My account → Multifactor authentication management.

Install the Duo Mobile authentication application from the Apple Store or on Google Play.

This will ensure that if you lose one factor, you can still use your other one to access your account. For example, you can use a phone and single-use codes a phone and a hardware key or two hardware keys. When you enable multifactor authentication for your account, we strongly recommend that you configure at least two options for your second factor. Registering factors Registering multiple factors

3.2 I have lost my second factor device.

Can I still use multifactor authentication?

3.1 I do not have a smartphone or tablet, or they are too old.2.2 When authenticating to our account portal.

2.1.1 Configuring your SSH client to only ask every so often.1.3.1 Configuring your YubiKey for Yubico OTP.

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