In this section, we will set up a practice lab with both Ubuntu and CentOS virtual machines. Windows users will learn how to remotely access Linux machines from Windows.
The section contains the following chapters:
- Chapter 1, Running Linux in a Virtual Environment
 - Chapter 2, Securing User Accounts
 - Chapter 3, Securing Your Server with a Firewall - Part 1
 - Chapter 4, Securing Your Server with a Firewall - Part 2
 - Chapter 5, Encryption Technologies
 - Chapter 6, SSH Hardening