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    Site-to-Site OpenVPN Connectivity Problem

    Scheduled Pinned Locked Moved OpenVPN
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    • DerelictD
      Derelict LAYER 8 Netgate
      last edited by

      No. You need to packet capture the pings at progressive hop points, not report success or failure of the pings.

      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)

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      • J
        JamesVA
        last edited by

        Ok, gotcha. Then the results are the same. I can't see any pings crossing the tunnel. I see them on each sides pfsense, but they don't come out on the other end.

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        • DerelictD
          Derelict LAYER 8 Netgate
          last edited by

          That is not enough information to provide any help.

          Post a pcap of something like a ping -c3 dest at each hop, detailing exactly where each pcap is taken.

          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)

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          • J
            JamesVA
            last edited by

            Sorry for the delay in my response - was out of office. Please let me know if you need more info, or if i misunderstood anything.

            clientA > pfsenseB (ping -c 1 10.0.105.51)

            clientA:

            C:\WINDOWS\system32>ping -c 1 10.0.105.1

            Pinging 10.0.105.1 with 32 bytes of data:
            Request timed out.
            Request timed out.
            Request timed out.
            Request timed out.

            Ping statistics for 10.0.105.1:
            Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),

            C:\WINDOWS\system32>

            pfsenseA:
            tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
            listening on ovpns2, link-type NULL (BSD loopback), capture size 262144 bytes
            14:17:33.076313 IP 10.0.100.121 > 10.0.105.1: ICMP echo request, id 1, seq 779, length 40
            14:17:37.670815 IP 10.0.100.121 > 10.0.105.1: ICMP echo request, id 1, seq 780, length 40
            14:17:42.681825 IP 10.0.100.121 > 10.0.105.1: ICMP echo request, id 1, seq 781, length 40
            14:17:47.687779 IP 10.0.100.121 > 10.0.105.1: ICMP echo request, id 1, seq 782, length 40

            pfsenseB:
            tcpdump is empty

            clientA > clientB (ping -c 1 10.0.105.51)

            ClientA:
            C:\WINDOWS\system32>ping -c 1 10.0.105.51

            Pinging 10.0.105.51 with 32 bytes of data:
            Request timed out.
            Request timed out.
            Request timed out.
            Request timed out.

            Ping statistics for 10.0.105.51:
            Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),

            C:\WINDOWS\system32>

            pfsenseA:
            tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
            listening on ovpns2, link-type NULL (BSD loopback), capture size 262144 bytes
            14:21:43.005849 IP 10.0.100.121 > 10.0.105.51: ICMP echo request, id 1, seq 787, length 40
            14:21:47.666048 IP 10.0.100.121 > 10.0.105.51: ICMP echo request, id 1, seq 788, length 40
            14:21:52.670818 IP 10.0.100.121 > 10.0.105.51: ICMP echo request, id 1, seq 789, length 40
            14:21:57.685270 IP 10.0.100.121 > 10.0.105.51: ICMP echo request, id 1, seq 790, length 40

            pfsenseB:
            tcpdump is empty.

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            • DerelictD
              Derelict LAYER 8 Netgate
              last edited by

              @jamesva said in Site-to-Site OpenVPN Connectivity Problem:

              pfsenseB:
              tcpdump is empty.

              Listening where?

              Sorry. You don't need the -c 1 flag. I forget sometimes that some people still use Windows.

              Don't need any more ping results. We know it isn't 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)

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              • J
                JamesVA
                last edited by

                pfsenseB is the other side psfsense console.

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                • DerelictD
                  Derelict LAYER 8 Netgate
                  last edited by Derelict

                  Right but capturing on what interface? Need specifics here.

                  And can you ping the pfSense LAN interface address on the other side?

                  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
                  • J
                    JamesVA
                    last edited by

                    The captures are running on the ovpn interfaces. Should i have been capturing on another interface?

                    As far as ping LAN interface - no, i can't reach it from one side to another. However if the client is on the same side, pfsense's LAN int responds to pings just fine.

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                    • J
                      JamesVA
                      last edited by JamesVA

                      Having said that, it looks like I can ping clients on Side A if i'm sitting on the console of pfsenseB.....

                      however it doesn't work the opposite way, i.e. if i'm on the console of pfsenseA, i can't reach anything on side B.

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                      • DerelictD
                        Derelict LAYER 8 Netgate
                        last edited by

                        It doesn't make any sense that you are seeing traffic exit the VPN at A but it does not arrive in a capture on openvpn at B.

                        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)

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                        • J
                          JamesVA
                          last edited by

                          Could it have something to do with the fact that pfsenseB WAN IP is on 10.x.x.x subnet?

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                          • DerelictD
                            Derelict LAYER 8 Netgate
                            last edited by

                            Not unless it's within or conflicting somehow eith the others. And you'd still see the packets in the capture on the OpenVPN.

                            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
                            • J
                              JamesVA
                              last edited by

                              hmm ok, what else can you suggest I try? I do have multiple ovpn instances on SideA, but i can't imagine that would conflict with any of them since they're running on different ports....

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                              • DerelictD
                                Derelict LAYER 8 Netgate
                                last edited by

                                It's not about ports but addresses/networks. They all need to be unique.

                                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)

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                                • J
                                  JamesVA
                                  last edited by

                                  they are; screenshot below.

                                  0_1539288653531_2018-10-11_15-09-37.jpg

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                                  • J
                                    JamesVA
                                    last edited by

                                    what would be the next think i try that you would suggest?

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                                    • DerelictD
                                      Derelict LAYER 8 Netgate
                                      last edited by

                                      Don't know. I asked for some files in chat. Did you upload those?

                                      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
                                      • J
                                        JamesVA
                                        last edited by

                                        Done. Thanks for taking a look at it!

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                                        • J
                                          JamesVA
                                          last edited by

                                          Just wanted to check in if you had to review the files i sent over.

                                          Thanks in advance!

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                                          • J
                                            JamesVA
                                            last edited by JamesVA

                                            guess not, no problem. thanks for giving it a shot, i do appreciate it.

                                            Just as an update... I thought... well maybe it's one of the packages that's interfering with the traffic... so I've set up a completely vanilla lab on the vmware workstation. The only package loaded on both sides is open-vm-tools....

                                            Same exact results.... so it makes me think i'm doing something wrong. I'll keep picking at it....

                                            Any other suggestions are welcome.

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