1. Copy my public key to the remote host:
ssh-copy-id remote_host
2. Login on the remote host
ssh remote_host
3. Edit the /etc/ssh/sshd_config file and change the following configuration options:
ChallengeResponseAuthentication no LoginGraceTime 30 MaxStartups 2:30:10 PasswordAuthentication no PermitRootLogin no PubkeyAuthentication yes UsePAM no
4. Restart the SSH daemon, but don't disconnect the SSH session:
sudo service ssh restart
5. Open another shell and verify that pubkey authentication now works:
ssh -v remote_host
6. Observe that:
- Now I logged without typing my password
- The SSH client printed the following message:
debug: Authentication succeeded (publickey)
That's it.
