OpenVPN configuration examples (Legacy Firmware)

OpenVPN is an open-source software application that implements virtual private network (VPN) techniques for creating secure point-to-point or site-to-site connections in routed or bridged configurations and remote access facilities.

Summary

This article contains various OpenVPN configuration examples that require more in depth explanations in order to achieve a successful configuration. All of the examples given concern two or more RUT routers. For more basic explanations on the OpenVPN WebUI section, visit our VPN manual page.

TLS Authentication

This section provides a guide on how to configure a successful OpenVPN connection between an OpenVPN Client and Server, using the TLS Authentication method on RUT routers.

Generating TLS certificates/keys

A connection that uses TLS requires multiple certificates and keys for authentication:

* Server:
** The root certificate file (Cetificate Authority)
** Server certificate
** Server key
** Diffie Hellman Parameters

* Client
** The root certificate file (Cetificate Authority)
** Client certificate
** Client key

Detailed instruction on how to obtain these files can be found here.

Once you have all the required files, continue following this guide

Configuration

First, lets configure OpenVPN Client and Server instances

Static key Authentication

This section provides a guide on how to configure a successful OpenVPN connection between an OpenVPN Client and Server, using the Static key Authentication method on RUT routers.

Creating a Static key

First, lets create a Static key.