OpenVPN with ID and Password Authentication or Two Factor Authentication

In a recent post, we did a step by step on installing OpenVPN to an Ubuntu server 12.04. https://www.slsmk.com/installing-openvpn-on-ubuntu-server-12-04/ The default install used certificate based authentication for the client. So if the client has the proper files, it can connect to the server. So lets say you want to use… Continue reading