The next section is about installing a vagrant application that is needed to configure metasploitable3 machines on VirtualBox.

Please follow the lecture step by step and make sure you have a working internet connection.

If you have any problems with the installation steps, notice the resources file of the following lecture. It has all the commands you need and also a way to manually download metasploitable3 machines and import them into VirtualBox.

It would be very important for you to get these VMs installed as the rest of the lectures rely on them, thus follow the steps with prudence.