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    OpenVPN Static Ip, Routing Problem, NAT

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    OpenVPN
    openvpn routing rules open vpn nat
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    • DerelictD
      Derelict LAYER 8 Netgate
      last edited by Derelict

      If you are port forwarding into a server over OpenVPN you have to:

      1. Assign an interface
      2. Make sure the rules on the OpenVPN tab DO NOT match the incoming traffic. They must match on the assigned interface tab to get the benefit of pf's reply-to.

      Since your OpenVPN should probably be treated as a WAN, I would delete all of the rules on the OpenVPN tab and only add rules on the assigned interface tab that pass the proper mail ports to the proper server. Passing any there is bad news.

      Chattanooga, Tennessee, USA
      A comprehensive network diagram is worth 10,000 words and 15 conference calls.
      DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
      Do Not Chat For Help! NO_WAN_EGRESS(TM)

      ? 1 Reply Last reply Reply Quote 0
      • ?
        A Former User @Derelict
        last edited by A Former User

        @Derelict The Interface is assigned and also the Rules are in the Assigned Interface Tab and they work as long as i pull the vpn routes.

        It seems to be and problem dedicated to the routes of my firewall.

        Sadly i dont know further.

        Maybe someone can look directly into it, if this isnt to timetaking.

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        • DerelictD
          Derelict LAYER 8 Netgate
          last edited by

          Is it also matching on the OpenVPN tab? If it matches on the OpenVPN tab the assigned interface tab will never be looked at and you will not get reply-to.

          Chattanooga, Tennessee, USA
          A comprehensive network diagram is worth 10,000 words and 15 conference calls.
          DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
          Do Not Chat For Help! NO_WAN_EGRESS(TM)

          1 Reply Last reply Reply Quote 0
          • ?
            A Former User
            last edited by

            On the OpenVPN Tab there are no rules only on the assigned interface tab.

            1 Reply Last reply Reply Quote 0
            • DerelictD
              Derelict LAYER 8 Netgate
              last edited by

              Then it should be working. Packet capture and see what's going on. Look at states and see what's going on.

              Chattanooga, Tennessee, USA
              A comprehensive network diagram is worth 10,000 words and 15 conference calls.
              DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
              Do Not Chat For Help! NO_WAN_EGRESS(TM)

              ? 2 Replies Last reply Reply Quote 0
              • ?
                A Former User @Derelict
                last edited by

                @Derelict
                It seems they are talking when i try to send a mail.

                Paket Capture:
                00:41:11.073926 IP MAIL.localdomain.56830 > mx01.emig.gmx.net.smtp: tcp 0
                00:41:11.074317 IP mx01.emig.gmx.net.smtp > MAIL.localdomain.56830: tcp 0
                00:41:11.074527 IP MAIL.localdomain.34318 > mx00.emig.gmx.net.smtp: tcp 0
                00:41:11.074865 IP mx00.emig.gmx.net.smtp > MAIL.localdomain.34318: tcp 0

                States:
                LAN tcp 192.168.1.105:56812 -> 212.227.17.5:25 TIME_WAIT:TIME_WAIT 1 / 1 60 B / 40 B
                WAN tcp 192.168.188.22:8701 (192.168.1.105:56812) -> 212.227.17.5:25 TIME_WAIT:TIME_WAIT 1 / 1 60 B / 40 B

                192.168.1.105 (Mail)
                192.168.188.22 (Pfsense)

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                • ?
                  A Former User @Derelict
                  last edited by

                  @Derelict i tried to set my default gateway at the routing tab to my vpn gateway and then the traffic seems to get routed threw the OpenVPN Tunnel.
                  Dont know if that helps.

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                  • DerelictD
                    Derelict LAYER 8 Netgate
                    last edited by

                    Are you talking about outbound connections or inbound? What, specifically is not working.

                    Chattanooga, Tennessee, USA
                    A comprehensive network diagram is worth 10,000 words and 15 conference calls.
                    DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
                    Do Not Chat For Help! NO_WAN_EGRESS(TM)

                    ? 1 Reply Last reply Reply Quote 0
                    • ?
                      A Former User
                      last edited by

                      Outbound.

                      1 Reply Last reply Reply Quote 0
                      • ?
                        A Former User @Derelict
                        last edited by

                        @Derelict I think i got it to work. After i set the default gateway manually to the VPN and not automatic and saw that it worked,
                        i transfered the Flowing Rule i made for the outbound traffic to the Lan interface.
                        With the new knowledge of your help and the help of viragomann i changed some tiny things in the firewall rule.
                        After that i changed the default gateway back to automatic and know the outbound traffic takes the vpn and everything works.
                        I even rebootet the firewall to get lost of the states but everything still functions as it seems.

                        Thank you so very much for your dedication and your help.

                        1 Reply Last reply Reply Quote 1
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