After having fixed a sudo user (and confirm it works!), please also disable PermitRootLogin by setting it to 'no'. Restart ssh after editing sshd_conf. If you

After having fixed a sudo user (and confirm it works!), please also disable PermitRootLogin by setting it to 'no'. Restart ssh after editing sshd_conf. If you're squeemish, run dropbear on another port so you can log into your machine in case you made a boo-boo configuring openssh. Also, more resources for security settings: https://benchmarks.cisecurity.org/downloads/multiform/index.cfm https://benchmarks.cisecurity.org/downloads/multiform/index....