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OpenVPN 2 Cookbook by Jan Just Keijser

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Troubleshooting client-to-client traffic routing

In this recipe, we will troubleshoot a VPN setup where it is the intention that client-to-client traffic is enabled, but the server configuration directive 'client-to-client' is missing. In a TUN-style network, it is possible to allow client-to-client traffic without this directive and it even allows the server administrator to apply firewalling rules to the traffic between clients. In a TAP-style network, this is generally not possible, as will be explained in the There's more… section.

Getting ready

We use the following network layout:

Getting ready

Install OpenVPN 2.0 or higher on three computers. Make sure the ...

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