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    LAN allowed packets blocked when should be passed

    Firewalling
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    • J
      jpforte
      last edited by

      I have an SG-1000 that is new to me. There is something odd.

      In the firewall logs it shows LAN packets being blocked by the default deny rule.

      https://www.dropbox.com/s/5to1z2wv8m7o3rq/Screenshot%202017-10-23%2017.43.25.png?dl=0

      However is rules for the LAN I have all LAN traffic to all destinations allowed.

      https://www.dropbox.com/s/tfaerrkkjhq9jty/Screenshot%202017-10-23%2017.42.50.png?dl=0

      How is this happening?

      ![Screenshot 2017-10-23 17.43.25.png](/public/imported_attachments/1/Screenshot 2017-10-23 17.43.25.png)
      ![Screenshot 2017-10-23 17.43.25.png_thumb](/public/imported_attachments/1/Screenshot 2017-10-23 17.43.25.png_thumb)
      ![Screenshot 2017-10-23 17.42.50.png](/public/imported_attachments/1/Screenshot 2017-10-23 17.42.50.png)
      ![Screenshot 2017-10-23 17.42.50.png_thumb](/public/imported_attachments/1/Screenshot 2017-10-23 17.42.50.png_thumb)

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      • johnpozJ
        johnpoz LAYER 8 Global Moderator
        last edited by

        Those look to be all out of state packets… Notice the flags FA, PA..

        https://doc.pfsense.org/index.php/Why_do_my_logs_show_%22blocked%22_for_traffic_from_a_legitimate_connection

        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 24.11 | Lab VMs 2.7.2, 24.11

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        • N
          nleaudio
          last edited by

          I've got a PF Sense install that is generating TONS of blocked packets in the logs - like 20-30 per second.  A lot of DNS lookups, and other legit traffic.  I read the doc.pfsense.org link, but this just seems very strange to me that so much is being logged as blocked by the default rule.  I've been having some DNS lookup issues, and now that I see a lot of this traffic being blocked to the ISP dns server, it makes me wonder if this isn't the issue.  In the firewall rules, I am allowing everything out for all protocols, even from any source.  Normal browser operation seems to be ok.  Should I just disregard all these tons of logged events?

          Bob

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          • DerelictD
            Derelict LAYER 8 Netgate
            last edited by

            Impossible to say without seeing what is actually being logged.

            Chattanooga, Tennessee, USA
            A comprehensive network diagram is worth 10,000 words and 15 conference calls.
            DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
            Do Not Chat For Help! NO_WAN_EGRESS(TM)

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            • KOMK
              KOM
              last edited by

              Start a new thread instead of piggybacking off this one and post your firewall rules.

              1 Reply Last reply Reply Quote 0
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