To ease the deployment of OpenVPN configuration, and public and private key files, a new feature is available to include all of them in a single file. This is done by integrating the contents of the ca, cert, key, and optionally the tls-auth file into the client configuration file itself. In this recipe, we will set up such a configuration file and use it to connect to our standard OpenVPN server.
We will use the following network layout:
Set up the client and server certificates using the first recipe from Chapter 2, Client-server IP-only Networks. For this recipe, the server computer was running CentOS 6 Linux and OpenVPN 2.3.11. The client was running Fedora 22 Linux and OpenVPN 2.3.11. Keep the configuration file, basic-udp-server.conf, from the Server-side routing recipe from Chapter 2, Client-server IP-only Networks at hand, as well as the client configuration file, basic-udp-client.conf.