Mastering Linux Security and Hardening - Second Edition

Installing a virtual machine in VirtualBox

For those of you who've never used VirtualBox, here's a quick guide to get you going:

1. Download and install VirtualBox and the VirtualBox Extension Pack. You can get them from https://www.virtualbox.org/.
2. Download the installation .iso files for Ubuntu Server 18.04, CentOS 7, and CentOS 8. You can get them from https://ubuntu.com/download/alternative-downloads#alternate-ubuntu-server-installer and https://www.centos.org/. (Note that for Ubuntu 18.04, you'll need to use this alternate installer. The default installer that you get from the main Download page lacks some of the features that you'll need to complete the exercises.)
3. Start VirtualBox and click the New icon at the top of the screen. Fill ...