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Let say you have a VPN between the Rasperry and the laptop. With OpenVPN, you can "push" internal routes from the internal network to the laptop. Then the laptop knows how to join the internal network. You may also have to set routes on the internal nodes telling your laptop is accessible through the VPN. Then all communication will be VPN cyphered....


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Put the Raspberry PI between the modem and router, so traffic goes modem -> pi -> router.


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The easiest way is to put the VPN on your router and ensure it pushes (advertises) the internal network route. Alternatively, you can do the same on the Pi, but you then need to add routes on your router for the VPN via the Pi and have the Pi forward packets. ( note you will have asymetric routing with packets from devices bouncing via the router, with ...


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By default, OpenVPN connections are layer-3 point-to-point tunnels, which do not allow this – as there is no layer-2 header (i.e. the packets have no MAC addresses or equivalent), the client cannot specify which device to send the packets to. There's only one host they could go: the other end of the tunnel. In other words, it means the VPN server has to be ...


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