This page describes the steps to disable password authentication for SSH.

Please follow the steps as given below.

* cd /etc/ssh

* ls -l sshd_config (note the ownership & permission of the file)

* ci -l sshd_config (Check IN for the file sshd_config)

* vi sshd_config (open & edit the file as below)

ChallengeResponseAuthentication no

PasswordAuthentication no

saved and close the file

* /etc/init.d/sshd reload (reload the sshd service)