As of 2023 we no longer allow password authentication to the ILRI, Nairobi HPC. All users must use SSH keys instead. This is due to the increasingly hostile nature of the public Internet, where malicious bots constantly barrage publicly accessible servers with login attempts, hoping to get lucky. SSH keys are a more robust, more secure

More information about SSH keys:

• Set up SSH public key authentication to connect to a remote system, from the University of Indiana's University Information Technology Services