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    Floating rule matched but firewall doesn't respond

    Scheduled Pinned Locked Moved Firewalling
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    • johnpozJ Online
      johnpoz LAYER 8 Global Moderator
      last edited by

      So your not doing nat? If so you would need your port forwards before any firewall rules would work.

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      • jimpJ Offline
        jimp Rebel Alliance Developer Netgate
        last edited by

        If the rules look identical then the problem isn't in the rule. It's somewhere else in your ruleset. The rules are processed in a different order depending on where they are in the ruleset.

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        • C Offline
          clarknova @johnpoz
          last edited by

          @johnpoz said in Floating rule matched but firewall doesn't respond:

          So your not doing nat? If so you would need your port forwards before any firewall rules would work.

          No NAT, just trying to reach the web UI on its public address.

          db

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          • C Offline
            clarknova @jimp
            last edited by

            @jimp said in Floating rule matched but firewall doesn't respond:

            If the rules look identical then the problem isn't in the rule. It's somewhere else in your ruleset. The rules are processed in a different order depending on where they are in the ruleset.

            Interesting. If I don't block RFC1918 addresses on the WAN then I can reach the web UI. But my source address is not rfc1918, and I can verify this by both the source address in the pass rule, with tcpdump, and with the firewall logs.

            What would case the rfc1918 rule to block a valid publicly-routable address?

            db

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            • C Offline
              clarknova
              last edited by

              However I am using a socks proxy. Could this be a factor? pfSense sees the connection from the public IP address of my ssh server, so I don't see how it could be unless there is some filtering happening above the IP layer.

              db

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              • jimpJ Offline
                jimp Rebel Alliance Developer Netgate
                last edited by

                Are you sure it's public?

                The reply-to entry on your rule is 192.0.2.1 and that is not a publicly routable subnet.

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                • johnpozJ Online
                  johnpoz LAYER 8 Global Moderator
                  last edited by

                  yeah 192.0.2 is used for documentation - are you obfuscating it?

                  An intelligent man is sometimes forced to be drunk to spend time with his fools
                  If you get confused: Listen to the Music Play
                  Please don't Chat/PM me for help, unless mod related
                  SG-4860 25.07 | Lab VMs 2.8, 25.07

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                  • C Offline
                    clarknova @jimp
                    last edited by clarknova

                    @jimp said in Floating rule matched but firewall doesn't respond:

                    Are you sure it's public?

                    The reply-to entry on your rule is 192.0.2.1 and that is not a publicly routable subnet.

                    I substituted that for the real address. I've attached the unedited output of the firewall log. PUB03 is the WAN. The Source and Destination addresses in the log match the public IP addresses of my socks proxy and pfSense WAN, respectively.firewall_log.png

                    db

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                    • johnpozJ Online
                      johnpoz LAYER 8 Global Moderator
                      last edited by

                      I can ping that IP..

                      An intelligent man is sometimes forced to be drunk to spend time with his fools
                      If you get confused: Listen to the Music Play
                      Please don't Chat/PM me for help, unless mod related
                      SG-4860 25.07 | Lab VMs 2.8, 25.07

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                      • C Offline
                        clarknova @johnpoz
                        last edited by clarknova

                        @johnpoz said in Floating rule matched but firewall doesn't respond:

                        I can ping that IP..

                        That's expected. I can ping it too, but only if I'm not blocking rfc1918.

                        db

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                        • johnpozJ Online
                          johnpoz LAYER 8 Global Moderator
                          last edited by johnpoz

                          Well that would make zero sense ;)

                          If for whatever reason rfc1918 rule was blocking it, ping should be included in that block.

                          An intelligent man is sometimes forced to be drunk to spend time with his fools
                          If you get confused: Listen to the Music Play
                          Please don't Chat/PM me for help, unless mod related
                          SG-4860 25.07 | Lab VMs 2.8, 25.07

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                          • C Offline
                            clarknova
                            last edited by

                            I think I have this solved, partly. One of the disconnected interfaces on pfSense is in the same subnet as 104.37.148.83, so that's maybe going to cause a problem, although I don't see replies going out that interface, maybe because it's disconnected.

                            The other mystery is why disabling the rfc1918 filter causes the wan to be reachable from that subnet.

                            db

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