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Kein Ping innerhalb einer Bridge?

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  • F
    fummeleisen
    last edited by Dec 22, 2023, 4:45 PM

    Hallo,

    in meiner sense sind LAN1, LAN2 und WLAN in einer Bridge zusammengeschaltet. Nach meinem Verständnis müsste sich die Bridge wie ein Switch verhalten, dh z.B.: die angeschlossenen Geräte müssten einander anpingen können. Das scheint aber nicht so zu sein.

    🔒 Log in to view

    Fall1:
    über die sense kann PC1 den Card-Reader (CR) NICHT anpingen (s. Ping1)
    Allerdings kann CR von PC2 über VPN angepingt werden!?!

    Um zu kontrollieren, ob das Problem vielleicht bei Windows liegt, wurde die sense gegen einen Switch getauscht: Fall2:
    Hier kann PC1 den CR anpingen. (s. Ping2)

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    Die Bridge ist aus meiner Sicht sauber konfiguriert. Lässt sich dieses Ping-Problem an der sense beheben?

    V 1 Reply Last reply Dec 22, 2023, 5:15 PM Reply Quote 0
    • V
      viragomann @fummeleisen
      last edited by Dec 22, 2023, 5:15 PM

      @fummeleisen
      Hast du den Ping auch mit entsprechender Firewall-Regel erlaubt?
      Standardmäßig filtert die pfSense trotz Bridge an den Member-Interfaces, und erlaubt ist nur, wofür es eine Pass-Regel gibt.

      F 2 Replies Last reply Dec 22, 2023, 6:13 PM Reply Quote 0
      • F
        fummeleisen @viragomann
        last edited by Dec 22, 2023, 6:13 PM

        @viragomann
        Danke für die schnelle Antwort! Meine diesbezüglichen Einstellungen sehen so aus:

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        V 1 Reply Last reply Dec 22, 2023, 6:31 PM Reply Quote 0
        • V
          viragomann @fummeleisen
          last edited by Dec 22, 2023, 6:31 PM

          @fummeleisen
          Das sind offensichtlich die Regeln der Bridge. Gefiltert wird aber standardmäßig an den Member-Interfaces, wie geschrieben, es sei denn, du hast die Einstellung in den Tunables geändert.

          1 Reply Last reply Reply Quote 0
          • F
            fummeleisen @viragomann
            last edited by Dec 22, 2023, 6:31 PM

            @viragomann

            Hätte die letzte Regel namens Test nicht ausreichen müssen?

            V F 2 Replies Last reply Dec 22, 2023, 6:34 PM Reply Quote 0
            • V
              viragomann @fummeleisen
              last edited by Dec 22, 2023, 6:34 PM

              @fummeleisen
              Noch einmal: Das ist wohl das falsche Regelset.

              Verschiebe diese Regel auf LAN1, wenn der PC auf den CR zugreifen können soll.

              1 Reply Last reply Reply Quote 1
              • F
                fummeleisen @fummeleisen
                last edited by Dec 22, 2023, 6:34 PM

                @fummeleisen

                Pardon, ich sehe deine Antworten erst, wenn ich selber antworte. Nein, an den Bridge-Members habe ich nichts eingestellt. werde ich gleich mal versuchen.

                F 1 Reply Last reply Dec 22, 2023, 6:48 PM Reply Quote 0
                • F
                  fummeleisen @fummeleisen
                  last edited by Dec 22, 2023, 6:48 PM

                  @fummeleisen

                  Besten Dank! Hat funktioniert! Schöne Feiertage und einen guten Rutsch!

                  1 Reply Last reply Reply Quote 0
                  • J
                    JonathanLee
                    last edited by JonathanLee Dec 22, 2023, 7:03 PM Dec 22, 2023, 6:52 PM

                    Do you allow ping on each of the bridged interfaces they also have firewall rules that are filtered out. A bridge makes a single layer 2 broadcast domain, however the interfaces are still have layer 3 rules to follow on top of the bridge rules. What interfaces are part of your bridge? I think you said LAN1, LAN2, if they are click on the tab for each interface and show the rules you made to allow ICMP traffic please.
                    🔒 Log in to view
                    Here is an example of mine. I have no bridge between interfaces. I want my WLAN interface ( source: my custom LAN group alias) to be able ping anything and negate the OPT1 interface. Ping anything but not OPT1.

                    Yours should have layer 3 rules on both interfaces

                    • LAN1:
                      allow ICMP from source LAN1 to destination LAN2

                    • LAN2:
                      allow ICPM from source LAN2 to destination LAN1

                    Make sure to upvote

                    F 1 Reply Last reply Dec 22, 2023, 7:17 PM Reply Quote 1
                    • F
                      fummeleisen @JonathanLee
                      last edited by Dec 22, 2023, 7:17 PM

                      @JonathanLee

                      Thank You for Your explanations! As newcomer actually I made the doors wide open as a first step (s. LAN2 as example). Next step will be to reduce the apertures by rules on protocol and port restrictions.

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                      J 1 Reply Last reply Dec 22, 2023, 7:30 PM Reply Quote 1
                      • J
                        JonathanLee @fummeleisen
                        last edited by Dec 22, 2023, 7:30 PM

                        @fummeleisen

                        Quick Note:
                        WAN will block everything unless request comes from inside of the firewall so not many rules if any is needed on that interface, (unless you use VPN or remote desktop, and you need direct wan to lan (webservers etc)).

                        So do not open a any any on wan...... This will render firewall useless if you have a any any on wan interfaces.

                        Example Here is my WAN nothing is allowed.
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                        Here is my LAN all my needs are set here outbound.
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                        Here is my guest WiFi. I don't care about it as long as it doesn't access my secure LAN.

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                        Make sure to upvote

                        F 1 Reply Last reply Dec 22, 2023, 7:46 PM Reply Quote 1
                        • F
                          fummeleisen @JonathanLee
                          last edited by Dec 22, 2023, 7:46 PM

                          @JonathanLee

                          Thanks a lot Jonathan for this examples! I will study them thoroughly in the next days. I wish You a nice Christmas!

                          1 Reply Last reply Reply Quote 1
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