Netgate Discussion Forum
    • Categories
    • Recent
    • Tags
    • Popular
    • Users
    • Search
    • Register
    • Login

    Unable to access GUI from specific PC

    Scheduled Pinned Locked Moved General pfSense Questions
    28 Posts 6 Posters 889 Views
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • GertjanG
      Gertjan @enjawd
      last edited by

      @enjawd said in Unable to access GUI from specific PC:

      This makes me suspect it might be related to the MAC address being blocked

      pfSense can block devices, but this under full pfSEnse admin control.
      So ask him ? Have him look at this : ( System > Advanced > Admin Access )

      40c67bd7-5c77-40cc-b087-49184110deb2-image.png

      PC with dual NIC ?
      If wired up, shut down the Wifi (disable it all together).
      If you use wifi, remove the cable.
      If really dual NIC, check what interface has the gateway, that's the one you should use.

      No "help me" PM's please. Use the forum, the community will thank you.
      Edit : and where are the logs ??

      E 1 Reply Last reply Reply Quote 0
      • E
        enjawd @Gertjan
        last edited by

        @Gertjan hello! Thanks for your reply. I tired the admin acces method as well, doesnt work.

        As for the dual nic, i have both 10G and 1G(onbaord) which is disabled, no wifi. I only enable it other day to test if its my nic issue. So apparently, when i hook up to my onboard 1G NIC, im able to access the webgui, but when i swap back to the 10G NIC, im not able to access the GUI again.

        This issue happen recently, for some reason my pc is not able to access the GUI anymore

        1 Reply Last reply Reply Quote 0
        • Bob.DigB
          Bob.Dig LAYER 8 @enjawd
          last edited by

          @enjawd said in Unable to access GUI from specific PC:

          However, when I swap the network cable to a different LAN port on my PC, it starts working. This makes me suspect

          This makes me suspect you have blocked one IP but not the other, show your rules on that interface and maybe groups and floating too.

          E 1 Reply Last reply Reply Quote 0
          • E
            enjawd @Bob.Dig
            last edited by

            @Bob-Dig said in Unable to access GUI from specific PC:

            @enjawd said in Unable to access GUI from specific PC:

            However, when I swap the network cable to a different LAN port on my PC, it starts working. This makes me suspect

            This makes me suspect you have blocked one IP but not the other, show your rules on that interface and maybe groups and floating too.

            Currently there is no flating rule, as for Lan interface there only 3 rule . Capture.PNG

            Bob.DigB 1 Reply Last reply Reply Quote 0
            • Bob.DigB
              Bob.Dig LAYER 8 @enjawd
              last edited by

              @enjawd And any other connectivity is given by using the NIC with no access to the Web-GUI? And your switching NICs, but it seems you also switching the port on the other side because it is 1Gb and then 10Gb...

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

                Yeah that^. Is it only the pfSense webgui you can't access? Connecting to external site still works?

                E 1 Reply Last reply Reply Quote 0
                • E
                  enjawd @stephenw10
                  last edited by

                  @stephenw10

                  Yes apparently only pfsense gui I can’t access, but other than that everything else is working as per normal I’m still getting 10g speed as well

                  Bob.DigB 1 Reply Last reply Reply Quote 0
                  • Bob.DigB
                    Bob.Dig LAYER 8 @enjawd
                    last edited by

                    @enjawd But the other port (10G) on your pfSense is most probably not in the same LAN as the 1G port...

                    E 1 Reply Last reply Reply Quote 0
                    • E
                      enjawd @Bob.Dig
                      last edited by

                      @Bob-Dig my pfsense has only 2 * 10G port. 1 for WAN, another for LAN with vlan connect to another 10G switch. So basically all my equipment or device are connect to the switch 10G port

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

                        Connecting with a different NIC will give you a different IP address because of the different MAC. It seems likely the original IP is simply blocked from accessing the gui.

                        E 1 Reply Last reply Reply Quote 0
                        • E
                          enjawd @stephenw10
                          last edited by

                          @stephenw10 Yeah seems like either mac address or ip is blocked, any idea how can i find this? nothing seems to appear on syslog as well

                          johnpozJ GertjanG 2 Replies Last reply Reply Quote 0
                          • johnpozJ
                            johnpoz LAYER 8 Global Moderator @enjawd
                            last edited by johnpoz

                            @enjawd your rules on that interface wouldn't be blocking anything - do you have floating rules? Is the rules your actually hitting - or do you have some other interface?

                            Do you even have ethernet filtering enabled - its not out of the box. And its only available in +

                            Sure you didn't just lock yourself out of the gui from that IP by sending wrong password.. But that should timeout anyway.

                            I always put my PC ip in there just in case.

                            adminIP.jpg

                            Are you running any IPS? If your pc has internet access thru pfsense - would seem odd that it could be blocked by some mac filtering - unless you had very specific rules in your ethernet filtering - and again that is not even enabled out of the box. So you would of had to enable it and put in rules.

                            So to be clear your internet access through pfsense works, dns to pfsense IP works - you can not just access the gui.. Do you get any sort of error, does it just time out?

                            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

                            E 2 Replies Last reply Reply Quote 0
                            • E
                              enjawd @johnpoz
                              last edited by

                              @johnpoz I've no floating rule going on, 0 entries.

                              This is my login protection setting. If i were to put my pc ip, will my other device be denied to GUI making my pc exception only?

                              Screenshot 2024-12-23 101238.png

                              johnpozJ 1 Reply Last reply Reply Quote 0
                              • E
                                enjawd @johnpoz
                                last edited by

                                @johnpoz Forgot to mention, im on pfsense+

                                1 Reply Last reply Reply Quote 0
                                • E
                                  enjawd
                                  last edited by

                                  Just to update, im pretty sure its mac address block for some reason. On the NIC, i change the ip address to another, im not able to access gui either.

                                  1 Reply Last reply Reply Quote 0
                                  • the otherT
                                    the other
                                    last edited by

                                    hey,
                                    is said pc connected directly tp pfsense or is a switch in use?
                                    If so (with switch in between): are there any Port Security settings active? Any MAC blocking there in use?

                                    the other

                                    pure amateur home user, no business or professional background
                                    please excuse poor english skills and typpoz :)

                                    1 Reply Last reply Reply Quote 0
                                    • GertjanG
                                      Gertjan @enjawd
                                      last edited by

                                      @enjawd

                                      ... and are the perfect (the ones you've found when you installed pfSernse) LAN firewall rules in place :

                                      ef366b7f-a7b8-478d-b568-5b6b3a75e070-image.png

                                      ?

                                      No "help me" PM's please. Use the forum, the community will thank you.
                                      Edit : and where are the logs ??

                                      1 Reply Last reply Reply Quote 0
                                      • johnpozJ
                                        johnpoz LAYER 8 Global Moderator @enjawd
                                        last edited by johnpoz

                                        @enjawd it is an exception only.

                                        if you have plus - then look to see if you have mac filtering enabled. Look in advanced firewall/nat - or do you even see the ethernet tab in firewall?

                                        ethernet.jpg

                                        Would of kind of had to put in a specific rule - how would you not know you did such a thing?

                                        And again - what happens, what does your multiple browsers you have put in show - just a timeout? Some error - are you using https via that 8443 port, are you trying redirection by hitting port 80 via http first?

                                        Is the browser just telling you it doesn't trust the cert. Without a very specific ethernet rule - I don't see how this is possible your blocked.

                                        Is this the error your getting in your browser?

                                        error.jpg

                                        And again are you running IPS?

                                        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

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

                                          I would probably run a pcap at this point just to be sure packets from the client in question are actually arriving.

                                          1 Reply Last reply Reply Quote 1
                                          • E
                                            enjawd
                                            last edited by

                                            i think i have found the problem, think someone had change the MTU on my pc to 9000 instead of 1500. Changed it back and im able to access GUI again.

                                            johnpozJ 1 Reply Last reply Reply Quote 1
                                            • First post
                                              Last post
                                            Copyright 2025 Rubicon Communications LLC (Netgate). All rights reserved.