Hardening using Lynis

Lynis is a open source security tool that helps in auditing Unix-like systems. It performs an extensive scan of the system and, based on the results, provides guidance for system hardening and compliance testing.

Lynis can be used for various purposes, including vulnerability detection, penetration testing, security auditing, compliance testing, and system hardening.

Getting ready

Lynis is supported on almost all Unix-based operating systems and versions. We can obtain a copy of Lynis from its official website by visiting the following link:

https://cisofy.com/documentation/lynis/get-started/

For our example, we are using an Ubuntu system to install Lynis. We run the following command to install the tool:

How to do it...

In this section, we will see how to use Lynis to perform a detailed audit of the system security aspects and configurations:

1. Once Lynis is installed on our system, we can run the lynis command, as follows, to check out more information about the options supported...