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    NAT (Port Forwarding) and web failover

    Scheduled Pinned Locked Moved NAT
    27 Posts 4 Posters 9.1k Views
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    • S
      skipper
      last edited by

      i found out that when an https request is going to web-slave through the vpn, then the web-slave is trying to send the package through the wan interface and not back to vpn. can i somehow force this traffic to pass through the vpn connection?

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      • marcellocM
        marcelloc
        last edited by

        @skipper:

        i found out that when an https request is going to web-slave through the vpn, then the web-slave is trying to send the package through the wan interface and not back to vpn. can i somehow force this traffic to pass through the vpn connection?

        You will need an outbound nat to "masquerade" client internet ip. This way the server can return the package through vpn instead of forwarding it to it's wan

        Treinamentos de Elite: http://sys-squad.com

        Help a community developer! ;D

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        • S
          skipper
          last edited by

          thnx for your help marcelloc!!
          how must the outbound nat look?
          these are the vpn IPs
          pfsense1 ip : 10.4.0.1
          pfsense2 ip : 10.4.0.2

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          • marcellocM
            marcelloc
            last edited by

            It's on firewall -> nat -> outbound

            Treinamentos de Elite: http://sys-squad.com

            Help a community developer! ;D

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            • S
              skipper
              last edited by

              i created an outbound nat but the traffic is still going to the wan interface and not back to vpn
              here is my outbound nat rule

              Interface webslavelan
              Source      192.168.129.0/24
              Source Port   443
              Destination   10.4.0.0/30
              Destination Port *
              NAT Address *
              NAT Port   443
              Static Port   NO

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              • marcellocM
                marcelloc
                last edited by

                @skipper:

                i created an outbound nat but the traffic is still going to the wan interface and not back to vpn
                here is my outbound nat rule

                Interface webslavelan
                Source       192.168.129.0/24
                Source Port    443
                Destination    10.4.0.0/30
                Destination Port *
                NAT Address *
                NAT Port    443
                Static Port    NO

                change source to any.
                does webslavelan is the outgoing interface to reach 10.4.0.0/30?

                Treinamentos de Elite: http://sys-squad.com

                Help a community developer! ;D

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                • S
                  skipper
                  last edited by

                  thnx for your help man!
                  this is my network a bit more detailed,
                  i have tried to put different interfaces and IPs on the outbound configuration but the traffic goes still to my wan :/
                  now i put vpnsitetosite as interface and source any but it doesn't work.
                  what should the destination be? is there something else that i need to define? create a new gateway or something like that?

                  net.jpg
                  net.jpg_thumb

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                  • marcellocM
                    marcelloc
                    last edited by

                    Try to go to console and do some package capture to find what interface pfsense is using to send traffic to remote host.

                    Treinamentos de Elite: http://sys-squad.com

                    Help a community developer! ;D

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                    • S
                      skipper
                      last edited by

                      the request is going from vpnsitetosite–>webslavelan-->webslave
                      and the reply is going from webslave-->webslavelan-->wan
                      i need to send it back to vpnsitetosite interface

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                      • marcellocM
                        marcelloc
                        last edited by

                        Can you select vpn interface on outgoing nat rule?

                        Treinamentos de Elite: http://sys-squad.com

                        Help a community developer! ;D

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                        • S
                          skipper
                          last edited by

                          i can select OpenVPN but not the specific vpn interface.
                          do i need to create a virtual IP, a rule to 1:1, or something additional?
                          i have tried many combinations for the outbound rule but the http replies are keep going to the wan interface :/

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                          • marcellocM
                            marcelloc
                            last edited by

                            What you get when you select openvpn as interface on outbound nat for this server?

                            If you can't do it with load balance, consider using a reverse proxy like (varnish,squid-reverse,apache+mod_security)

                            Treinamentos de Elite: http://sys-squad.com

                            Help a community developer! ;D

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                            • S
                              skipper
                              last edited by

                              i get the same, nothing changes if i select openvpn as interface.
                              i will try to find another solution as it seems that what i am trying to do it's not possible with load balance.
                              thnx for your help!

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