20.2. Securing Your System
In this section you will learn some basic facts about security and you will be guided through the most important principles.
20.2.1. Server Security
When talking about security, it is time to have a closer look at operating systems. What is an operating system? Well, the core of an operating system is a kernel, which is surrounded by various tools and components. The first thing you have to keep in mind is that every piece of software that has been installed on your system is a potential danger. The more packages you have installed on your machine, the more likely it is that one of these packages contains a security leak that can be used by a remote cracker to hack your system.
The network interfaces especially are ...
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