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    Routing via Site2Site Wireguard for a specific client

    Scheduled Pinned Locked Moved Routing and Multi WAN
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    • T
      thisisagoodfirewall @viragomann
      last edited by

      @viragomann

      okay.
      I can configure a dns for the client on the remote side like this...
      d9f6a482-fd6e-4927-97c1-2a4f3c65c8d0-image.png

      Not sure what you mean with "On the remote site you need a masquerading rule on WAN for the traffic from the local client."

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      • V
        viragomann @thisisagoodfirewall
        last edited by

        @thisisagoodfirewall
        If you want to use 8.8.8.8 on the client, simply forward DNS requests from its source IP, as already suggested.

        The masquerading is done with an outbound NAT rule on pfSense.
        Switch the outbound NAT on the remote box to the hybrid mode.
        Then add a rule for the source of 192.168.2.0/24 (or only 192.168.2.73/32) to the WAN.

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        • T
          thisisagoodfirewall @viragomann
          last edited by

          @viragomann

          just need a proof of concept. can fiddle with dns later.
          added 8.8.8.8 as client dns.

          masq like this?
          05bc5508-b1f8-4506-b4a8-f25c961f23e2-image.png
          I had those settings before and yet the client 192.168.2.73 can't connect to the internet via tunnel.

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          • V
            viragomann @thisisagoodfirewall
            last edited by

            @thisisagoodfirewall
            The NAT rules are useless as long as you have the automatic mode enabled.

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            • T
              thisisagoodfirewall @viragomann
              last edited by thisisagoodfirewall

              @viragomann
              I have the Hybrid Outbound NAT mode enabled as visible in the picture.
              Am I doing this right?

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                viragomann @thisisagoodfirewall
                last edited by

                @thisisagoodfirewall
                I see. Seemed it was the automatic mode.

                From the concerned client can you ping 8.8.8.8?

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                • T
                  thisisagoodfirewall @viragomann
                  last edited by thisisagoodfirewall

                  @viragomann

                  nope. can not ping 8.8.8.8

                  can reach the network on SiteA - last trace is a dns server.

                  I assigned a dns server from Site A.

                  DNS is working.

                  32a04684-44bc-4595-bf0e-8c081b547ded-image.png

                  internet is not. can not ping 8.8.8.8

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                  • V
                    viragomann @thisisagoodfirewall
                    last edited by

                    @thisisagoodfirewall
                    So this let me suspect that the outbound NAT doesn't work.

                    To be sure, did you do the outbound settings at A?

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                    • T
                      thisisagoodfirewall @viragomann
                      last edited by

                      @viragomann
                      Site A:
                      a799b163-12f5-401c-9ae4-9cb0954c858b-image.png

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                      • V
                        viragomann @thisisagoodfirewall
                        last edited by

                        @thisisagoodfirewall
                        This should work from the point of NAT rules.
                        However, that one on OPT1 should not be needed. It would only impact access from A to B.

                        Do the firewall rules on the VPN interface allow internet access?

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                          thisisagoodfirewall @viragomann
                          last edited by

                          @viragomann

                          OPT1 is the mapping for my openvpn service. Local LAN of Site A (192.168.1.0/24) to VPN Provider.

                          The Gateway of the Wireguard Site2Site tunnel allows all connections.
                          732c9324-ed37-4c20-aeb2-99f3aa6707f9-image.png

                          Still can't figure out why Client on Side B can not connect via the Gateway.

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                          • V
                            viragomann @thisisagoodfirewall
                            last edited by

                            @thisisagoodfirewall said in Routing via Site2Site Wireguard for a specific client:

                            OPT1 is the mapping for my openvpn service. Local LAN of Site A (192.168.1.0/24) to VPN Provider.

                            Ah, I see.

                            Could it be that the upstream traffic from the client at B is also routed to this VPN provider due to the site A routing table?

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                            • T
                              thisisagoodfirewall @viragomann
                              last edited by

                              @viragomann

                              This could be an issue, lets see.

                              This is the Outbound NAT of Site B.

                              ad879963-5ebb-4fde-8980-60f1386bdea6-image.png

                              If I create a firewall rule for the Client on Site B I skip the VPN provider and use the WAN instead.
                              2d4b60e1-031b-4309-a3cd-269b4ae02596-image.png

                              I just want my client to not use the WAN Gateway but the Wireguard Tunnel Gateway s2sgw and have the traffic routed via the Site A internet.

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                              • V
                                viragomann @thisisagoodfirewall
                                last edited by

                                @thisisagoodfirewall
                                Yes, you can do this with a policy routing rule, but consider that you will have to allow DNS access to the local server with an additional rule above of this or even forward DNS requests to a public server.

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                                • T
                                  thisisagoodfirewall @viragomann
                                  last edited by

                                  @viragomann

                                  Site B Gateways
                                  ec567ad8-ab56-434b-8ef3-5b696c41c567-image.png
                                  I need to route via site1gw.

                                  This is Site A Gateways
                                  3b9632b9-bde1-4093-9e45-a1f45d336b57-image.png

                                  Site A static route
                                  56037d33-f0b5-4348-839e-0d24360d5ecb-image.png

                                  Site B static route
                                  ee1cbffe-7c37-4258-8a18-8141ca19d98c-image.png

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