This is a brief illustration of how to setup OpenVPN with Multi Factor Authentication (using Duo Security), SSL Certificates, and TLS validation. For now I’m only offering the server and client configs. Please leave a comment if any of this needs clarification. First, a very fast and minimal setup is detailed here: http://holgr.com/blog/2009/06/setting-up-openvpn-on-amazons-ec2/ The holgr.com… Continue reading OpenVPN with multi-factor authentication on EC2