Netgate Discussion Forum
    • Categories
    • Recent
    • Tags
    • Popular
    • Users
    • Search
    • Register
    • Login

    site-to-site, cannot ping from one lan to other lan

    Scheduled Pinned Locked Moved OpenVPN
    47 Posts 4 Posters 7.9k Views
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • K
      Konstanti @A Former User
      last edited by Konstanti

      @asdffdsa6131
      Hmmm.
      Let's check.
      I see that packets went in the direction 192.168.62.0/24
      Check to see if the numbers appear in this place ?
      This is a rule on the OpenVpn server interface
      0_1551048928252_d553ef14-0f5b-449a-bd0d-09c2b6214446-image.png

      Can host 10.0.0.4 ping 192.168.62.1 ?
      Can host 192.168.62.1 ping 10.0.0.4 ?

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

        hi again,
        I have a continuous ping from 10.0.0.4 to 192.168.62.1 and it is 'request time out'

        K 1 Reply Last reply Reply Quote 0
        • K
          Konstanti @A Former User
          last edited by Konstanti

          @asdffdsa6131
          On the Openvpn server side
          In WEBGUI
          /Diagnostics/Packet Capture /
          Interface Openvpn
          Protocol ICMP
          Start

          what is the result ?

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

            thank much,

            18:05:09.356421 IP 192.168.62.181 > 10.0.0.4: ICMP echo request, id 1, seq 15875, length 40
            18:05:11.355996 IP 192.168.62.181 > 10.0.0.4: ICMP echo request, id 1, seq 15876, length 40
            18:05:13.344929 IP 192.168.62.181 > 10.0.0.4: ICMP echo request, id 1, seq 15877, length 40

            K 1 Reply Last reply Reply Quote 0
            • K
              Konstanti @A Former User
              last edited by Konstanti

              @asdffdsa6131

              Now the same is on the Openvpn client side
              WAN interface only
              we continue to ping 192.168.62.181 > 10.0.0.4

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

                192.168.62.181 is my windows 10 laptop

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

                  openvpn client side, wan interface only

                  18:10:15.358365 IP 192.168.62.181 > 10.0.0.4: ICMP echo request, id 1, seq 16028, length 40
                  18:10:17.360473 IP 192.168.62.181 > 10.0.0.4: ICMP echo request, id 1, seq 16029, length 40

                  K 1 Reply Last reply Reply Quote 0
                  • K
                    Konstanti @A Former User
                    last edited by Konstanti

                    @asdffdsa6131
                    We can see that the tunnel is working
                    but the host 10.0.0.4 does not respond to pings
                    Can host 192.168.62.181 ping 10.0.0.7 ?
                    If you run ping 10.0.0.4 ->192.168.62.181 (or 192.168.62.1)
                    What will packet capture show ?

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

                      We can see that the tunnel is working
                      --- correct
                      but the host 10.0.0.4 does not respond to pings
                      --- correct
                      Can host 192.168.62.181 ping 10.0.0.7 ?
                      --- I tried again and the answer is no
                      If you run ping 10.0.0.4 ->192.168.62.181
                      --- I have a continous ping from 10.0.0.4 -> 192.168.62.181
                      What will packet capture show ?
                      --- If you mean on the openvpn client
                      0_1551050555319_1edae2e8-a18b-4057-a39c-6189c875867f-image.png

                      18:22:40.814131 IP 40.97.154.82.443 > 47.20.7.132.20255: tcp 43
                      18:22:40.866569 IP 47.20.7.132.20255 > 40.97.154.82.443: tcp 0
                      18:22:41.070851 IP 47.20.7.132 > 47.20.4.1: ICMP echo request, id 16129, seq 7040, length 8
                      18:22:41.077374 IP 47.20.4.1 > 47.20.7.132: ICMP echo reply, id 16129, seq 7040, length 8
                      18:22:41.567306 IP 40.85.175.163.443 > 47.20.7.132.40913: tcp 51
                      18:22:41.603084 IP 47.20.7.132 > 47.20.4.1: ICMP echo request, id 16129, seq 7041, length 8
                      18:22:41.609795 IP 47.20.4.1 > 47.20.7.132: ICMP echo reply, id 16129, seq 7041, length 8
                      18:22:41.617013 IP 47.20.7.132.40913 > 40.85.175.163.443: tcp 0
                      18:22:42.132944 IP 47.20.7.132 > 47.20.4.1: ICMP echo request, id 16129, seq 7042, length 8
                      18:22:42.142050 IP 47.20.4.1 > 47.20.7.132: ICMP echo reply, id 16129, seq 7042, length 8
                      18:22:42.665103 IP 47.20.7.132 > 47.20.4.1: ICMP echo request, id 16129, seq 7043, length 8
                      18:22:42.668422 IP 47.20.7.132.4987 > 38.27.106.14.443: tcp 0
                      18:22:42.677302 IP 47.20.4.1 > 47.20.7.132: ICMP echo reply, id 16129, seq 7043, length 8
                      18:22:42.685356 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 0
                      18:22:42.685659 IP 47.20.7.132.4987 > 38.27.106.14.443: tcp 0
                      18:22:42.697633 IP 47.20.7.132.4987 > 38.27.106.14.443: tcp 517
                      18:22:42.716822 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 0
                      18:22:42.731861 IP 47.20.7.132.37964 > 1.1.1.1.853: tcp 0
                      18:22:42.737668 IP 47.20.7.132.10038 > 23.10.93.204.443: tcp 226
                      18:22:42.738583 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 1460
                      18:22:42.738726 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 1460
                      18:22:42.738752 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 1460
                      18:22:42.738881 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 1460
                      18:22:42.738907 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 521
                      18:22:42.738942 IP 47.20.7.132.4987 > 38.27.106.14.443: tcp 0
                      18:22:42.739068 IP 47.20.7.132.4987 > 38.27.106.14.443: tcp 0
                      18:22:42.739089 IP 47.20.7.132.4987 > 38.27.106.14.443: tcp 0
                      18:22:42.741041 IP 47.20.7.132.4987 > 38.27.106.14.443: tcp 126
                      18:22:42.743358 IP 1.1.1.1.853 > 47.20.7.132.37964: tcp 0
                      18:22:42.743432 IP 47.20.7.132.37964 > 1.1.1.1.853: tcp 0
                      18:22:42.743650 IP 47.20.7.132.37964 > 1.1.1.1.853: tcp 311
                      18:22:42.754079 IP 23.10.93.204.443 > 47.20.7.132.10038: tcp 128
                      18:22:42.754123 IP 23.10.93.204.443 > 47.20.7.132.10038: tcp 38
                      18:22:42.756267 IP 47.20.7.132.10038 > 23.10.93.204.443: tcp 0
                      18:22:42.756930 IP 1.1.1.1.853 > 47.20.7.132.37964: tcp 0
                      18:22:42.757434 IP 1.1.1.1.853 > 47.20.7.132.37964: tcp 1460
                      18:22:42.757472 IP 47.20.7.132.37964 > 1.1.1.1.853: tcp 0
                      18:22:42.757482 IP 1.1.1.1.853 > 47.20.7.132.37964: tcp 1242
                      18:22:42.757509 IP 47.20.7.132.37964 > 1.1.1.1.853: tcp 0
                      18:22:42.758787 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 51
                      18:22:42.759295 IP 47.20.7.132.4987 > 38.27.106.14.443: tcp 242
                      18:22:42.769256 IP 47.20.7.132.37964 > 1.1.1.1.853: tcp 126
                      18:22:42.779281 IP 1.1.1.1.853 > 47.20.7.132.37964: tcp 424
                      18:22:42.779366 IP 47.20.7.132.37964 > 1.1.1.1.853: tcp 0
                      18:22:42.779793 IP 47.20.7.132.37964 > 1.1.1.1.853: tcp 86
                      18:22:42.790808 IP 1.1.1.1.853 > 47.20.7.132.37964: tcp 499
                      18:22:42.790873 IP 47.20.7.132.37964 > 1.1.1.1.853: tcp 0
                      18:22:42.791582 IP 47.20.7.132.37964 > 1.1.1.1.853: tcp 31
                      18:22:42.791901 IP 47.20.7.132.37964 > 1.1.1.1.853: tcp 0
                      18:22:42.797959 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 356
                      18:22:42.800224 IP 1.1.1.1.853 > 47.20.7.132.37964: tcp 0
                      18:22:42.800262 IP 1.1.1.1.853 > 47.20.7.132.37964: tcp 0
                      18:22:42.800644 IP 1.1.1.1.853 > 47.20.7.132.37964: tcp 0
                      18:22:42.800689 IP 47.20.7.132.37964 > 1.1.1.1.853: tcp 0
                      18:22:42.829447 IP 40.97.228.178.443 > 47.20.7.132.30169: tcp 43
                      18:22:42.837753 IP 47.20.7.132.4987 > 38.27.106.14.443: tcp 0
                      18:22:42.894908 IP 47.20.7.132.30169 > 40.97.228.178.443: tcp 0
                      18:22:42.993896 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 1460
                      18:22:42.993988 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 927
                      18:22:42.994014 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 1460
                      18:22:42.994147 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 1460
                      18:22:42.994179 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 646
                      18:22:42.994202 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 1460
                      18:22:42.994226 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 1460
                      18:22:42.994250 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 1460
                      18:22:42.994274 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 365
                      18:22:42.994295 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 1460
                      18:22:42.994447 IP 47.20.7.132.4987 > 38.27.106.14.443: tcp 0
                      18:22:42.994468 IP 47.20.7.132.4987 > 38.27.106.14.443: tcp 0
                      18:22:42.994489 IP 47.20.7.132.4987 > 38.27.106.14.443: tcp 0
                      18:22:42.994516 IP 47.20.7.132.4987 > 38.27.106.14.443: tcp 0
                      18:22:42.994536 IP 47.20.7.132.4987 > 38.27.106.14.443: tcp 0
                      18:22:42.994662 IP 47.20.7.132.4987 > 38.27.106.14.443: tcp 0
                      18:22:43.011965 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 1460
                      18:22:43.011992 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 1460
                      18:22:43.012016 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 1460
                      18:22:43.012277 IP 47.20.7.132.4987 > 38.27.106.14.443: tcp 0
                      18:22:43.012297 IP 47.20.7.132.4987 > 38.27.106.14.443: tcp 0
                      18:22:43.012316 IP 47.20.7.132.4987 > 38.27.106.14.443: tcp 0
                      18:22:43.017503 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 1460
                      18:22:43.017529 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 1460
                      18:22:43.017785 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 1460
                      18:22:43.017823 IP 47.20.7.132.4987 > 38.27.106.14.443: tcp 0
                      18:22:43.017843 IP 47.20.7.132.4987 > 38.27.106.14.443: tcp 0
                      18:22:43.017850 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 1460
                      18:22:43.017978 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 1460
                      18:22:43.018004 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 1460
                      18:22:43.018040 IP 47.20.7.132.4987 > 38.27.106.14.443: tcp 0
                      18:22:43.018151 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 1460
                      18:22:43.018190 IP 47.20.7.132.4987 > 38.27.106.14.443: tcp 0
                      18:22:43.018197 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 1460
                      18:22:43.018220 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 1460
                      18:22:43.018244 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 1460
                      18:22:43.018280 IP 47.20.7.132.4987 > 38.27.106.14.443: tcp 0
                      18:22:43.018406 IP 47.20.7.132.4987 > 38.27.106.14.443: tcp 0
                      18:22:43.018413 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 1460
                      18:22:43.018437 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 1460
                      18:22:43.018473 IP 47.20.7.132.4987 > 38.27.106.14.443: tcp 0
                      18:22:43.018493 IP 47.20.7.132.4987 > 38.27.106.14.443: tcp 0
                      18:22:43.018609 IP 38.27.106.14.443 > 47.20.7.132.4987: tcp 1460

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

                        sorry made mistake on the packet capture, that was from server, not client hang on.

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

                          0_1551050748859_1e0bf7a3-af7e-4f7c-984a-21828c6e6cc2-image.png

                          i tried a few times, the packets captured is blank
                          0_1551050831032_e5c3e602-cbce-4212-943f-d765e21a47d8-image.png

                          K 1 Reply Last reply Reply Quote 0
                          • K
                            Konstanti @A Former User
                            last edited by

                            @asdffdsa6131
                            Host 10.0.0.4 not rebooted ?
                            Check if there is a route to 192.168 in its routing table

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

                              Host 10.0.0.4 not rebooted ?
                              --- not rebooted
                              Check if there is a route to 192.168 in its routing table
                              --- i checked a few times, each time I try to re-add the rule I get the following error
                              C:\Users\user01>route add 192.168.62.0 mask 255.255.255.0 10.0.0.7
                              The route addition failed: The object already exists.

                              K 1 Reply Last reply Reply Quote 0
                              • K
                                Konstanti @A Former User
                                last edited by Konstanti

                                @asdffdsa6131
                                Good
                                Let's try another way
                                Ping 192.168.62.181->10.0.0.4 (or 10.0.0.1 or any other host from 10.0.0.0/24)
                                on the client side
                                Firewall/NAT Outbound/Edit (manual outbound)
                                0_1551051478768_9c094fbe-a5dc-4d38-9a83-bb3c52a79253-image.png

                                0_1551051457167_47e98eeb-0674-41e2-abbb-4de552166e83-image.png

                                If everything is configured correctly, then in packet capture (client side) you will see
                                10.0.0.7 ->10.0.0.4
                                10.0.0.4 ->10.0.0.7

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

                                  Ping 192.168.62.181->10.0.0.4
                                  --- I have a continous ping going all the time.
                                  0_1551051884275_28f05316-1590-488c-bc56-06a6ff3a362b-image.png

                                  Ping 192.168.62.181->10.0.0.4 continues to fail
                                  ping 192.168.62.181 -> 10.0.0.1 also fails.

                                  does this have something to do with that the client is an azure virtual machine and has no lan interface, just a wan interface?

                                  K 1 Reply Last reply Reply Quote 0
                                  • K
                                    Konstanti @A Former User
                                    last edited by Konstanti

                                    @asdffdsa6131

                                    NAT OUTBOUND changes the sender address (192.168.62.181) to its network address in the WAN interface (10.0.0.7) .the capture and package should show this
                                    for example
                                    IP 10.0.0.7 > 10.0.0.4: ICMP echo request, id 1, seq 16028, length 40
                                    IP 10.0.0.7 > 10.0.0.4: ICMP echo request, id 1, seq 16029, length 40

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

                                      not sure what you are asking, sorry

                                      K 1 Reply Last reply Reply Quote 0
                                      • K
                                        Konstanti @A Former User
                                        last edited by Konstanti

                                        @asdffdsa6131
                                        192.168.62.181 -> 10.0.0.7 (nat outbound) -> 10.0.0.4 ->10.0.0.7 -> 192.168.62.181

                                        In packet capture you should see instead of 192.168.62.181 10.0.0.7 (client side , wan interface)

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

                                          sorry, again I am not clear what you are asking for

                                          K 1 Reply Last reply Reply Quote 0
                                          • K
                                            Konstanti @A Former User
                                            last edited by Konstanti

                                            @asdffdsa6131
                                            NAT OUTBOUND changes the sender address (192.168.62.181) to its network address in the WAN interface (10.0.0.7) .the packet capture should show this (client side , wan interface)
                                            for example
                                            IP 10.0.0.7 > 10.0.0.4: ICMP echo request, id 1, seq 16028, length 40
                                            IP 10.0.0.7 > 10.0.0.4: ICMP echo request, id 1, seq 16029, length 40

                                            1 Reply Last reply Reply Quote 0
                                            • First post
                                              Last post
                                            Copyright 2025 Rubicon Communications LLC (Netgate). All rights reserved.