We will show you how to enable and disable root login in Ubuntu. Root access it required when you need to perform administrative operations which are not permitted for the regular system users, but in the same time the root access may be a huge security risk if it is enabled or if it is not used properly. In this tutorial we will show you how to enable and disable root login on a Linux VPS running Ubuntu as an operating system.
root
How to Disable SSH Password authentication on Linux
In this tutorial we will take a look at how we can disable SSH password authentication on a Linux VPS and setup SSH key-based authentication as this is considered a good security practice.We tested this tutorial on an Ubuntu 16.04 VPS, although it should work with any distribution of your choice as well.