Routing openvpn client across ipsec tunnel



  • Never had to do this but now it has been requested.

    Site A 10.0.0.0/24 <–--IPSEC P2P----> Site B 10.0.2.0/24

    OpenVPN for client vpn 10.0.1.0/24

    I want to be able to have openvpn client machines on the 10.0.1.0/24 network be able to connect to devices on the 10.0.2.0/24 subnet.  Would I be better off using ipsec client rather than openvpn?  Is this even possible?


  • Rebel Alliance Developer Netgate

    All you need are phase 2 entries on IPsec to cover the additional traffic flows:

    Site A gets an additional P2 for 10.0.1.0/24 to 10.0.2.0/24.
    Site B gets an additional P2 for 10.0.2.0/24 to 10.0.1.0/24.

    OpenVPN server also needs 10.0.2.0/24 set as a local network so the client gets a route.

    Then so long as the firewall rules allow the traffic it'll flow


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