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    Fail to route internet traffic from OpenVPN server side to CLIENT side

    Scheduled Pinned Locked Moved OpenVPN
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    • U
      Upper Deck
      last edited by Upper Deck

      Update: if OpenVPN server's "IPv4 Tunnel Network" set to /30, it worked. I have to use /24, the remote internet access is down.

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      • V
        viragomann @Upper Deck
        last edited by

        @upper-deck
        That is an expected behavior.
        If you have a bigger tunnel subnet than a /30 the client is not unique, because there are multiple client connections possible and hence the server cannot route packets to him without a adding client specific override.

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        • U
          Upper Deck @viragomann
          last edited by

          @viragomann said in Fail to route internet traffic from OpenVPN server side to CLIENT side:

          client specific override

          client specific override is configured

          Untitled-1.jpg

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          • V
            viragomann @Upper Deck
            last edited by

            @upper-deck
            Is the common name this one you've stated in the clients certificate?
            ...CA doesn't sound like a client at all.

            Also consider that you have to enter the client side networks into the server configs "Remote networks" box as well.

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            • U
              Upper Deck @viragomann
              last edited by

              @viragomann

              the common name is "Site2Site_Client_CA"

              / Existing Certificate / Subject ST=, O=, L=Macau, CN=Site2Site_Client_CA, C=**

              client side networks is set into the server config

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              • V
                viragomann @Upper Deck
                last edited by

                @upper-deck
                Seems to match.

                So check the OpenVPN log on the server. There should be an entry, when the client gets determined and the CSO is applied.

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                • U
                  Upper Deck
                  last edited by

                  local works normal. internet still can not be access

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                  • V
                    viragomann @Upper Deck
                    last edited by

                    @upper-deck
                    So the CSO is working now, I guess.

                    If you didn't set "redirect gateway" on either side and only stated the networks as seen in the screenshot, this should not affect internet traffic at all.

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                    • U
                      Upper Deck @viragomann
                      last edited by

                      @viragomann

                      There is no "Redirect IPv4 Gateway" option on the client side. Would you please tell me how to do that at the client side? Any suggestion would be appreciated.

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                      • V
                        viragomann @Upper Deck
                        last edited by

                        @upper-deck
                        As I got you, internet access on the client works well without the VPN, but doesn't if it is connected. So obviously the client set the default route to the server.

                        The server can push this route to the client if you have "redirect gateway checked. But the option exists on the server only in recent pfSense versions.
                        On the client you can check "don't pull routes" to avoid that the default route is set.

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