Lab overview

Since this book is highly practical, we will need a lab, a place where we can learn and perform attacks. To create this, we're going to use a program called VirtualBox.

VirtualBox

VirtualBox is a program that will allow us to install machines, just like normal computers, inside our own machine. We will have one computer, and we will install other computers inside it, acting as virtual machines. These are very important in terms of penetration testing; we're going to be using them a lot in order to set up a lab. It's very important to note that a virtual machine is just like a completely separate, working machine; there is nothing we will lose by installing an operating system as a virtual machine...