Keyboard interactive authentication

To use keyboard interactive authentication, it is necessary to setup authentication to a SSH server.

1. Log on to a remote target host as root.
2. Open the /etc/ssh/sshd_config file.
3. Setup keyboard interactive authentication as follows:
   • Set yes to the value of ChallengeResponseAuthentication. (If the line of ChallengeResponseAuthentication is commented out, remove the comment out hash sign (#).)
   • Set yes to the value of UsePAM. (If the UsePAM line is commented out, remove the comment out hash sign (#).)
4. Run the following command and restart the sshd service. An example command for each supported OS is shown.

   systemctl restart sshd