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    Unable to access GUI from specific PC

    Scheduled Pinned Locked Moved General pfSense Questions
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    • 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
      • stephenw10S
        stephenw10 Netgate Administrator
        last edited by

        Ah, that could do it.

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

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

          think someone

          So you mean you ;) I mean who else would be touching your pc? And to be honest why and the F would they be messing with mtu?

          But yeah could do it..

          Sniff would of brought that out - but yeah not something on my list to think of ;)

          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, 24.11

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          • E
            enjawd @johnpoz
            last edited by

            @johnpoz haha it was my bro, we are trying to set up our local network all 10g since our ISP providing 10G up/down. But we had issue with slow speed on iperf between local device(around 3Gbps, but my bro change it to MTU 9000 we had speed bump up to 9+ gbps).

            But what surprise me is that why is it only specifically the pc is not able to access the GUI, but via ssh/telnet no issue. All other device didnt had issue as well.

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

              @enjawd because your routing it, but not to pfsense interface. Pfsense will fragment if you send say 9000 to say google.com

              For sure a weird one in a million type of setups.. If you would of mentioned you were running jumbo might of occurred but I wasn't even thinking if you went full jumbo that you wouldn't changed your router - and you said your other devices worked etc..

              as fir ssh/telnet those would never be full jumbo - that is tiny tiny amounts of data moving back and forth.

              mixed mtu on a nework is going to cause nothing but pita.. But you should be able to reach closer to 10ge without jumbo.

              Slow speed your seeing on iperf.. could be iperf related - what version are you running, what happens when you go to 1500, but send multiple streams? Somewhat recent believe there is a multithread iperrf, before it was always single threaded. I think the older iperf2 might of been multithreaded.

              google iperf3 and 10ge testing.

              I would throw up say openspeedtest and try that.

              But the limit your seeing could be just how your testing with iperf

              I can only get about 3.3gbe on 5ge - but haven't looked too deep into it because the iperf3 running on my nas is old, and the nic in nas is just a usb dongle. Is the isp side running jumbo? I doubt it - you get 10ge from isp? I think that came up but the thread has gotten kind of long.

              So when you getting slower speeds with 1500 mtu, what was the cpu load on 2 test devices?

              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, 24.11

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              • E
                enjawd @johnpoz
                last edited by

                @johnpoz so i did a test again eariler on iperf3, some where forum mention to add in -P4 and i do get 10g speed.

                Im not sure if my isp side is on 9k MTU as they usually dont share this info. But on normal speedtest im able to get around 8G both up and down on 1500 or 9000 MTU

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

                  @enjawd well just look on your interface - pretty much bet you its 1500 on your wan interface.

                  ifconfig would give you that info.

                  did you check with openspeedtest?

                  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, 24.11

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

                    Mmm, I'd be amazed if your ISP was using anything other than 1500.

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