To set up the Linux VM, I will use Ubuntu 16.04.2 LTS Linux distribution (http://releases.ubuntu.com/16.04/). The reason I have chosen Ubuntu is that most of the tools covered in this book are either preinstalled or available through the apt-get package manager. The following is a step-by-step procedure to configure Ubuntu 16.04.2 LTS on VMware and VirtualBox. Feel free to follow the instructions given here depending on the virtualization software (either VMware or VirtualBox) installed on your system: