The Capsulecorp Pentest is a small virtual network managed by Vagrant and Ansible. It contains five virtual machines, including one Linux attacking system running Xubuntu and 4 Windows 2019 servers configured with various vulnerable services. This project can be used to learn network penetration testing as a stand-alone environment but is ultimatly designed to complement my book The Art of Network Penetration Testing.
A Perl script which analyzes the OS it's running on top of to determine whether or not it's virtualized, and if so which product(s) it's inside of. Uses multiple techniques (no red pills, I don't think) to gather information.
Vagrant is a utility for automating the deployment of virtualized environments using VirtualBox v4.x. It helps create and configure lightweight, portable virtual instances in a reproducable (i.e., scriptable) fashion. Written in Ruby.
How to configure VirtualBox to use an iSCSI target on a NAS to create a virtual drive that you can install the guest OS to.