Windows on Linode

https://github.com/ClickSimply/docs/blob/windows-on-linode/docs/tools-reference/windows-on-linode/installing-windows-on-linode-vps.md

If VirtualBox does not start the VM:

RUN > CMD > bcdedit /set hypervisorlaunchtype off
then reboot host machine.

An In-Depth Guide to iptables, the Linux Firewall

This is a great guide to iptables:

An In-Depth Guide to iptables, the Linux Firewall

Tutorial: Installing OpenVPN on Ubuntu 16.04

How to install OpenVPN on Ubuntu 16.04

To configure iptables look here:

https://www.digitalocean.com/community/tutorials/how-to-set-up-an-openvpn-server-on-ubuntu-16-04

 

How to Configure OpenVPN Access Server to Tunnel Traffic

https://linode.com/docs/networking/vpn/configure-openvpn-access-server-to-tunnel-traffic/

Install OpenVPN Access Server on Linux for Secure Communications

https://linode.com/docs/networking/vpn/install-openvpn-access-server-on-linux/