To configure multifactor authentication on a media server instance

1. (Optional) If you have already configured multifactor authentication for another instance and want to use the same authenticator account to log in to this instance, run the following command on the other instance:

   /usr/openv/netbackup/bin/goodies/nbmfacfg -show

   Take note of the key.

2. On the instance that you need to configure multifactor authentication for, run one of the following commands:

   • To enroll with a random key, run the following command:

     /usr/openv/netbackup/bin/goodies/nbmfacfg -enroll

   • To use an existing key, run the following command:

     /usr/openv/netbackup/bin/goodies/nbmfacfg -enroll -secret <existing key>

3. If you generated a new key, scan the QR code with an authentication app on your mobile phone. For example, Google Authenticator or Microsoft Authenticator.

   Note that the token validation is based on the server time. Ensure that the clock of the Flex Appliance and the mobile phone are correct.

   Note:

   If the appadmin user becomes locked, they cannot reset multifactor authentication for themself. To avoid this situation, Cohesity recommends that two or multiple users scan the same QR code of the appadmin user with their mobile phones. If one user loses access to the token, another user can help them to enroll again.

To disable multifactor authentication on a media server instance

1. Log in to the instance as the user that you want to disable multifactor authentication for.
2. Run the following command:

   /usr/openv/netbackup/bin/goodies/nbmfacfg -reset