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    502 Bad Gateway when PFSense connect WAN port.

    Scheduled Pinned Locked Moved General pfSense Questions
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    • Yet_learningPFSenseY
      Yet_learningPFSense @stephenw10
      last edited by

      @stephenw10

      ping 172.27.254.93 source 172.21.254.94
      with Windows cmd but I seem to get an error.

      ping to 8.8.8.8 itself remains as allowed in the FireWall log.DNS packets sent to the DNS server from 192.168.2.1 are also allowed, and DNS query packets from 192.168.2.11 to 192.168.2.1 are also going through.Hmmm...where is the disconnect?

      alt text
      alt text

      1 Reply Last reply Reply Quote 0
      • stephenw10S
        stephenw10 Netgate Administrator
        last edited by

        OK my Japanese (?) language skills are.... weak! 😉

        But it looks like the TTL expired reply is coming from 192.168.2.1?

        That implies whatever is looping there is connected directly to that router. I assume that is pfSense?

        So it looks like either there is a bad route or some policy routing rules there.

        Yet_learningPFSenseY 1 Reply Last reply Reply Quote 1
        • Yet_learningPFSenseY
          Yet_learningPFSense @stephenw10
          last edited by

          @stephenw10

          Japanese is so interesting , please use your phone's camera to transfer the text and translate it...

          As for me, I'm out of luck, since the Firewall logs show that packets are allowed, but I can't browse the internet.If you need any other configuration information, I can take a picture here and paste it into imgur.

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          • stephenw10S
            stephenw10 Netgate Administrator
            last edited by

            Well if 192.168.2.1 is indeed pfSense then a routing issue must be there.

            The rules you posted previously don't show a gateway on the OPT1 interface so no policy routing. Is that still the case?

            What does the routing table show now?

            Does traffic on the LAN still work as expected?

            Yet_learningPFSenseY 1 Reply Last reply Reply Quote 1
            • Yet_learningPFSenseY
              Yet_learningPFSense @stephenw10
              last edited by

              @stephenw10

              The OPT1-TV is allowed to connect to the internet and the LAN one is only used to log in to Admin.

              In the OPT1-TV interface settings, 192.168.2.1 is specified as the default gateway, but for now, I'll raise a screenshot of the configuration screen that might be helpful.

              alt text

              1 Reply Last reply Reply Quote 0
              • stephenw10S
                stephenw10 Netgate Administrator
                last edited by

                Ah, that's the issue. You should not have a gateway on OPT1-TV. And setting it as default is creating the loop.

                Remove the gateway from OPT1-TV. Make sure the default IPv4 gateway is set back to WAN_DHCP.

                Yet_learningPFSenseY 1 Reply Last reply Reply Quote 1
                • Yet_learningPFSenseY
                  Yet_learningPFSense @stephenw10
                  last edited by

                  @stephenw10

                  I changed the default gateway to WAN_DHCP on 192.168.100.1 and now the Firewall logs only show permission logs to port 53 on 192.168.2.1 and no permission logs for websites or other addresses.Also, the 8.8.8.8 ping has now changed to a timeout error.

                  I have been dealing with this problem for quite a while, but it doesn't seem to get resolved.Is it a problem with the LAN card...

                  1 Reply Last reply Reply Quote 0
                  • stephenw10S
                    stephenw10 Netgate Administrator
                    last edited by

                    Do you see logs for the ping to 8.8.8.8?

                    What do the states looks like in Diag > States whilst the ping is running?

                    What does the routing table show now?

                    No it's almost certainly not the NIC. That would prevent you accessing anything.

                    Yet_learningPFSenseY 2 Replies Last reply Reply Quote 1
                    • Yet_learningPFSenseY
                      Yet_learningPFSense @stephenw10
                      last edited by

                      @stephenw10

                      I don't think it's the NIC's fault either, but if it doesn't work so well,

                      I'll have to think about it.Diag > States , I took a picture of it but didn't know where the routing table was.

                      alt text

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                      • stephenw10S
                        stephenw10 Netgate Administrator
                        last edited by

                        The routing table is under Diag > Routes.

                        Try to run a continuous ping to 8.8.8.8 then filter the state table to find states containing 8.8.8.8.
                        You should have one state on OPT and one state on WAN with NAT. For example when I ping from my local LAN interface:
                        Screenshot from 2024-08-20 12-38-22.png

                        1 Reply Last reply Reply Quote 1
                        • Yet_learningPFSenseY
                          Yet_learningPFSense @stephenw10
                          last edited by

                          @stephenw10

                          Hmm, when I set the DefaultGateway to 192.168.2.1, I get an error message that the packet is unreachable or that the TTL time has expired, but when I set it to 192.168.1.1 (WAN IP), I get the timeouterror message.Diag -> Route or State image when set to 192.168.2.1 is here and

                          alt text

                          Here's one when I set it to 192.168.1.1. 8.8.8.8's send or receive bytes, one of which seems to be 0B.

                          alt text

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                          • stephenw10S
                            stephenw10 Netgate Administrator
                            last edited by

                            OK so you can see in that second see of images that the state for the ICMP 8.8.8.8 traffic on WAN does not have NAT applied.

                            That means either outbound NAT is not set to automatic (check Firewall > NAT > Outbound) or that there is no gateway on the WAN interface (check Interfaces > WAN).

                            The default route must be via the WAN gateway. There should not be a gateway on OPT.

                            Yet_learningPFSenseY 2 Replies Last reply Reply Quote 1
                            • Yet_learningPFSenseY
                              Yet_learningPFSense @stephenw10
                              last edited by

                              @stephenw10 Thanks.But I've been busy with work lately and will check the PFSense settings again on Saturday or Sunday.Sorry.

                              1 Reply Last reply Reply Quote 0
                              • Yet_learningPFSenseY
                                Yet_learningPFSense @stephenw10
                                last edited by

                                @stephenw10

                                I have checked the Outbound rules and it seems to be configured for Automatic outbound. As for the configuration, it is the one in this screenshot.
                                Is it ok?

                                alt text

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                                • stephenw10S
                                  stephenw10 Netgate Administrator
                                  last edited by

                                  Ok those settings are good. But you can see it has added automatic rules on the OPT1_TV intreface which implies there is a gateway defined on it still. There should not be a gateway on OPT1_TV.

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