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OpenVPN Cookbook - Second Edition by Jan Just Keijser

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Three-way routing

For a small number (less than four) of fixed endpoints, a point-to-point setup is very flexible. In this recipe, we set up three OpenVPN tunnels between three sites, including routing between the endpoints. By setting up three tunnels, we create redundant routing so that all the sites are connected even if one of the tunnels is disrupted.

Getting ready

Install OpenVPN 2.3.9 or higher on two computers. Make sure the computers are connected over a network. For this recipe, the server computer was running CentOS 6 Linux and OpenVPN 2.3.9 and the client was running Fedora 22 Linux and OpenVPN 2.3.10.

We will use the following network layout:

Make sure that the routing (IP forwarding) is configured on all the OpenVPN endpoints.

How to ...

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