All clients function except the OpenVPN endpoints

This recipe is again a continuation of the previous one. The previous recipe explained how to troubleshoot routing issues when connecting a client-side LAN (or subnet) to a server-side LAN. However, in the previous recipe, an omission in the routing configuration was made on purpose. In this recipe, we will focus on troubleshooting this quite common omission.

Getting ready

We 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 example2-5-server.conf from the Routing: subnets on both sides from Chapter 2, Client-server IP-only Networks, at hand, as well as the client configuration, basic-udp-client.conf, from the Server-side routing recipe from Chapter 2, Client-server IP-only Networks...