Enable root login via ssh

Introduction

By deafult, via ssh, user can't login as root user. There is setting in sshd to enable it.

Steps to enable root login

Root login config

You also need to edit /etc/ssh/sshd_config, and comment out the following line:

PermitRootLogin without-password

Just below it, add the following line:

PermitRootLogin yes

Then restart SSH:

service ssh restart

Reference

http://askubuntu.com/questions/469143/how-to-enable-ssh-root-access-on-ubuntu-14-04