Application guide of BaroPAM solution, a 3-step authentication solution for user identification and authentication in OpenVPN environment Index 1. What is OpenVPN? 2. OpenVPN installation and setup 2.1 Install OpenVPN 2.2 Linux client configuration 3. BaroPAM installation and setup 3.1 Preparation before installing BaroPAM 3.2 Download BaroPAM installation module 3.3 Create BaroPAM configuration..