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    Two gateways, two subnets, one internet, subnet connectivity issue

    Scheduled Pinned Locked Moved General pfSense Questions
    66 Posts 4 Posters 13.8k Views
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    • L
      Live4soccer7
      last edited by

      Thanks, I'll give it a shot today. Possibly this morning if I can find time before work. I'll post back.

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      • L
        Live4soccer7
        last edited by

        I tried the following as it seemed like the simplest test.

        Another option is to disable both NAT and the firewall which turns PFsense into a routing only platform:
        System -> Advanced -> Firewall & NAT -> check Disable all packet filtering

        I have now deleted an firewall rules that I've created and same went for routing tables on the pfSense box. When I did the above, I lost internet connectivity AND access to the router on the other side of the wireless bridge. I still have a route on the DDWRT router to the pfsense gateway and 192.168.5.0 subnet. What am I missing as that seems like it should do the trick. I still had local access to the 192.168.5.0 clients though, that was good.

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        • M
          marvosa
          last edited by

          You now need a default route @ LAN 2 pointing back to LAN 1 (192.168.1.1).

          You also need to verify that the static route @ LAN 1 is pointed at the current IP configured @ LAN 2.  (i.e. if the LAN 2 interface is 192.168.1.254, then the route should be destination 192.168.5.0/24 gateway 192.168.1.254)

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          • L
            Live4soccer7
            last edited by

            Ok, so I did this:

            System -> Advanced -> Firewall & NAT -> check Disable all packet filtering

            WAN was set to 192.168.1.254
            Default Gateway on wan is set to: 192.168.1.1

            Still nothing. I am on the 192.168.5.0 subnet doing all this and once I make those changes I can't access the internet. On LAN1 I have confirmed that I DO have the static route pointing at the WAN IP provided above.

            Is there something that needs to be set on LAN2 pfsense box to tell the LAN on that box to communicate with the WAN since all NAT/Filtering is disabled?

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            • M
              marvosa
              last edited by

              Check your routing table, what is the gateway of the default route?  Diagnostics -> Routes.  Post a screen shot if you can.

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              • L
                Live4soccer7
                last edited by

                I've been using .112 instead of .254 :) My static routes on LAN1 match this.

                ![route table.png](/public/imported_attachments/1/route table.png)
                ![route table.png_thumb](/public/imported_attachments/1/route table.png_thumb)

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                • M
                  marvosa
                  last edited by

                  Can you ping 192.168.1.1?  Can you ping 8.8.8.8?

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                  • L
                    Live4soccer7
                    last edited by

                    I doubt it, but I'll change the configuration back right now and let you know.

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                    • L
                      Live4soccer7
                      last edited by

                      Ping on both was 100% failure.

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                      • M
                        marvosa
                        last edited by

                        Can you post a network map of how things are currently connected?

                        Also, what default gateway are your clients using on the PC's?

                        What happens when you ping 192.168.1.1 from PFsense itself?

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                        • L
                          Live4soccer7
                          last edited by

                          What happens when you ping 192.168.1.1 from PFsense itself?

                          I'm checking now.

                          Please excuse my terrible drawing, but it is all there. Let me know if you need clarification.

                          IMG_1153.JPG
                          IMG_1153.JPG_thumb

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                          • M
                            marvosa
                            last edited by

                            Where can I input commands in pfSense?

                            Either from the shell via ssh or by going to Diagnostics -> Ping

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                            • L
                              Live4soccer7
                              last edited by

                              Ping Results directly from pfSense. Looks good. That means something is still prohibiting a connection between the LAN and WAN on the pfsense box as I'm unable to ping from a client connected to the pfSense Subnet (192.168.5.0)

                              PING 8.8.8.8 (8.8.8.8): 56 data bytes
                              64 bytes from 8.8.8.8: icmp_seq=0 ttl=58 time=19.789 ms
                              64 bytes from 8.8.8.8: icmp_seq=1 ttl=58 time=19.992 ms
                              64 bytes from 8.8.8.8: icmp_seq=2 ttl=58 time=18.517 ms

                              –- 8.8.8.8 ping statistics ---
                              3 packets transmitted, 3 packets received, 0.0% packet loss
                              round-trip min/avg/max/stddev = 18.517/19.433/19.992/0.653 ms

                              PING 192.168.1.1 (192.168.1.1): 56 data bytes
                              64 bytes from 192.168.1.1: icmp_seq=0 ttl=64 time=1.897 ms
                              64 bytes from 192.168.1.1: icmp_seq=1 ttl=64 time=3.034 ms
                              64 bytes from 192.168.1.1: icmp_seq=2 ttl=64 time=2.398 ms

                              --- 192.168.1.1 ping statistics ---
                              3 packets transmitted, 3 packets received, 0.0% packet loss
                              round-trip min/avg/max/stddev = 1.897/2.443/3.034/0.465 ms

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                              • M
                                marvosa
                                last edited by

                                Run a tracert on your laptop to 8.8.8.8 and post the results.

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                                • L
                                  Live4soccer7
                                  last edited by

                                  Traceroute while I have internet access:

                                  Traceroute has started…

                                  traceroute to 8.8.8.8 (8.8.8.8), 64 hops max, 72 byte packets
                                  1  192.168.5.1 (192.168.5.1)  2.032 ms  1.566 ms  3.057 ms
                                  2  192.168.1.1 (192.168.1.1)  4.491 ms  2.755 ms  3.445 ms
                                  3  * * *
                                  4  WANISP.ptr.us.xo.net (WANISP)  13.697 ms  11.825 ms  15.092 ms
                                  5  ge-0-0-2-spk-cr1.cet.com (198.202.27.65)  14.796 ms  12.241 ms  12.642 ms
                                  6  te-1-1-sea-cr2.cet.com (198.202.26.2)  18.589 ms  20.696 ms  20.326 ms
                                  7  six.sea01.google.com (206.81.80.17)  20.489 ms  20.139 ms  19.410 ms
                                  8  108.170.245.113 (108.170.245.113)  20.336 ms  20.854 ms  20.953 ms
                                  9  209.85.250.19 (209.85.250.19)  20.182 ms  20.219 ms  21.039 ms
                                  10  google-public-dns-a.google.com (8.8.8.8)  19.162 ms  20.637 ms  20.258 ms

                                  Let me run one when I turn NAT/Firewall off

                                  traceroute to 8.8.8.8 (8.8.8.8), 64 hops max, 72 byte packets
                                  1  192.168.5.1 (192.168.5.1)  1.249 ms  3.578 ms  1.490 ms
                                  2  * * *
                                  3  * * *
                                  4  * * *
                                  5  * * *
                                  6  * * *
                                  7  * * *
                                  8  * * *
                                  9  * * *
                                  10  * * *
                                  11  * * *
                                  12  * * *
                                  13  * * *

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                                  • M
                                    marvosa
                                    last edited by

                                    So, that traceroute shows you hitting the LAN 2 internal interface, then routed to LAN 1 and out to the internet.

                                    So, what do you mean when you say "traceroute while I have internet access"?

                                    ahh… I think I know what you mean now, so once you turn off the firewall and NATing.... you can't get past the local adapter.  Which tells me there's an internal  routing issue.

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                                    • L
                                      Live4soccer7
                                      last edited by

                                      Yes, that is correct. It hits the LAN interface on LAN2 and then dies on the spot.

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                                      • L
                                        Live4soccer7
                                        last edited by

                                        Do I need a static route between the LAN interface and the WAN?

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                                        • L
                                          Live4soccer7
                                          last edited by

                                          I can ping everything on LAN1 (192.168.1.0), however when I try to ping something on LAN2 I get something like this:

                                          92 bytes from dd-wrt (192.168.1.1): Destination Host Unreachable
                                          Vr HL TOS  Len  ID Flg  off TTL Pro  cks      Src      Dst
                                          4  5  00 5400 4fc9  0 0000  3f  01 a41b 192.168.1.115  192.168.5.1

                                          92 bytes from dd-wrt (192.168.1.1): Redirect Host(New addr: 192.168.1.254)
                                          Vr HL TOS  Len  ID Flg  off TTL Pro  cks      Src      Dst
                                          4  5  00 0054 f9f5  0 0000  3f  01 f9ee 192.168.1.115  192.168.5.1

                                          I'm not sure what the .254 address is.

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                                          • L
                                            Live4soccer7
                                            last edited by

                                            I found where the .254 was coming from. DDWRT was holding on to an old route that I set up previously in this thread. A reboot and it let go. Makes most of what I've been doing irrelevant and must go back now. Waiting for DHCP on the other end so I can connect to a PC over VNC for testing. I have not idea why VNC works over this network, but I'm glad that it is working.

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