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    LAN IPv4 access Blocked

    Scheduled Pinned Locked Moved General pfSense Questions
    16 Posts 2 Posters 1.9k Views
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    • johnpozJ Offline
      johnpoz LAYER 8 Global Moderator
      last edited by

      well those rules don't show any hits on the anti lockout rule - so you sure you actually were hitting the pfsense lan 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 24.11 | Lab VMs 2.8, 25.07

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      • J Offline
        JamesMcBride
        last edited by

        Yes, this is with a laptop plugged directly into the pfsense's LAN (nothing else connected)

        Laptop has 192.168.6.2 pfSense has 192.168.6.1

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        • johnpozJ Offline
          johnpoz LAYER 8 Global Moderator
          last edited by

          well makes zero sense.. Could you ping pfsense ip in lan?  Did you see its mac in your arp table?  Maybe you just had no connectivity at all?

          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 2.8, 25.07

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          • J Offline
            JamesMcBride
            last edited by

            Yes can always ping it and it is definitely the firewall that is blocking it, as soon as I do pfctl -d I can access the webgui / ssh, as soon as I do pfctl -e I can't.

            And this happened following the reboot after upgrading to 2.3.3 - has been working for months without any issues prior to this.

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            • J Offline
              JamesMcBride
              last edited by

              if it's relevant, this is nanobsd running on a repurposed HP thin client

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              • J Offline
                JamesMcBride
                last edited by

                Should really have included the log entries before too… See attached

                ![2017-02-22 (4).png](/public/imported_attachments/1/2017-02-22 (4).png)
                ![2017-02-22 (4).png_thumb](/public/imported_attachments/1/2017-02-22 (4).png_thumb)

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                • johnpozJ Offline
                  johnpoz LAYER 8 Global Moderator
                  last edited by

                  all of those blocks are out of state.. You see the flags on them are PA.. So that is an ACK - where is the SYN??  Yes the firewall should block those with the default rule since they are out of state.

                  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 2.8, 25.07

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                  • J Offline
                    JamesMcBride
                    last edited by

                    Very strange, I've just come back to do a fresh log from scratch and it's working ok again now! Not quite sure what is going on here, but thank you for your help!

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                    • J Offline
                      JamesMcBride
                      last edited by

                      Ok, I think I've figured out what's causing it, but can't see why. It seems to be related to the attached NAT rules being enabled.

                      ![2017-02-22 (5).png](/public/imported_attachments/1/2017-02-22 (5).png)
                      ![2017-02-22 (5).png_thumb](/public/imported_attachments/1/2017-02-22 (5).png_thumb)

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                      • johnpozJ Offline
                        johnpoz LAYER 8 Global Moderator
                        last edited by

                        Why would you forward traffic hitting your lan interface with a dest on your wan IP to a IP on your lan network??  But yeah that could cause issues..

                        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 2.8, 25.07

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                        • J Offline
                          JamesMcBride
                          last edited by

                          Just for consistency of DNS records.

                          In this case, 443 on my wan IP nats to 443 on my exchange server. The A record for owa.mydomain.com goes to my wan address. If a device (say my phone) wants to connect to my owa server, it looks up owa.mydomain.com and gets my WAN address - if the NAT rule isn't there it can't get to it.

                          I could get around this with ACL's in bind, but these rules did work previously and they're only setup for specific ports, which was why it was a bit of a sod to find!

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                          • johnpozJ Offline
                            johnpoz LAYER 8 Global Moderator
                            last edited by

                            why do you not just put in a override for owa.mydomain.com to point to the rfc1918 address directly..

                            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 2.8, 25.07

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                            • J Offline
                              JamesMcBride
                              last edited by

                              Yeah, this is what I will do.

                              Thanks again

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