We often tend to believe that operating systems are secured by default, but securing your Linux servers to protect your data, intellectual property and time is the responsibility of the system administrator.

In this post we will review some of the basics operations that shall always be done while installing a new Linux server. We will use Debian as an example for the different commands but finding the rights commands for RedHat, CentOs or any other Linux distribution should be quite straight forward once you know what you are looking for and what you’d like to achieve.

Nowadays it’s quite trendy to have penetration testing as a starting point for cybersecurity. Even though penetration testing is a good practice, it’s very limited and focused on one application/product and should therefore not be used as an entry point for cybersecurity.