Linux Server setup

Install VirtualBox

First, download the appropriate installation package for your operating system from the Download page of VirtualBox.

download VirtualBox

Next, we install VirtualBox (at the time of writing, it is version 6.1.12). In the individual installation steps, we can simply accept the default values and literally click our way through. We may be asked whether an additional network adapter should also be set up: we confirm this with "install".

The illustrations may differ, but basically it is an ordinary installation.
setup wizard
features and installation path
network interfaces
start installation
installation progress

When the installation is complete, we can leave the "start after installation" checkbox checked.

For me on Windows, an additional network connection has also been created. "Host-only" is a virtual adapter with which the virtual machines from VirtualBox can communicate.

Network adapter