Virtual Box, Kali Linux, Kioptrix VM setup
This video shows Virtual Box and virtual network setup
Install Kali Linux VM and Kioptrix VM on Virtual Box
To download Virtual Box and its extension
https://www.virtualbox.org/wiki/Downl...
To download kioptrix virtual machine(s)
http://www.vulnhub.com/?q=kioptrix
To download Kali Linux for virtual machine
https://www.kali.org/get-kali/