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    Internet on windows but not ubuntu bad pfsense configuration?

    Scheduled Pinned Locked Moved General pfSense Questions
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    • Raffi_R
      Raffi_
      last edited by Raffi_

      If you are using DNS resolver with forwarding mode, the first option will be the local host by default. There is no need to enter it again under DNS Server Settings in the General setup tab.

      Edit, something doesn't seem right with those 1ms query times. How would it go from 8 seconds to 1ms? I think this might be the DNS lookup GUI bug I've seen in the past.

      Run those dig commands from pfSense instead.
      Diagnostics/ Command Prompt
      dig @172.20.0.253 google.com
      dig @172.20.0.254 google.com

      I think those might give you the real results.

      F 1 Reply Last reply Reply Quote 0
      • DaddyGoD
        DaddyGo @Raffi_
        last edited by

        @Raffi_

        just an idea
        it would be worthwhile to look at and compare these:

        Windows: https://docs.microsoft.com/en-us/previous-versions//cc977482(v=technet.10)?redirectedfrom=MSDN

        Linux: /etc/resolv.conf

        search domain.net
        option timeout:1
        nameserver 1.1.1.1
        nameserver 2.2.2.2
        nameserver 3.3.3.3

        or something like that

        Cats bury it so they can't see it!
        (You know what I mean if you have a cat)

        1 Reply Last reply Reply Quote 0
        • F
          Farisse @Raffi_
          last edited by

          @Raffi_
          b958cd9d-7c01-48ee-9d97-6ea2e1a68972-image.png 710c96f0-0f10-41a3-8146-01e4c9b6f1cd-image.png

          I removed the localhost from the general setting and these are the results

          @DaddyGo It was a good suggestion, but unfortunately /etc/resolv.conf is managed by systemd-resolved who is used by netplan /etc/netplan/*.yaml

          1 Reply Last reply Reply Quote 0
          • Raffi_R
            Raffi_
            last edited by Raffi_

            Interesting, well the two DNS servers seem to be responding better now. That could also be because they are caching.

            How is Ubuntu getting its interface settings? Is it statically assigned in Ubuntu or is it set to automatic (DHCP)? There were no leases in your DHCP list.

            1 Reply Last reply Reply Quote 0
            • F
              Farisse
              last edited by Farisse

              I assigned static ip through /etc/netplan/01-network-manager-all.yaml

              8289bd18-79be-4859-a103-cc2f027aab86-image.png

              Everything seems good to me....

              Edit, maybe an non relevant information, i can not ping the other vms in the dmz network. But my other vms can ping my ubuntu vm. Could it be something to do with routing ?

              1 Reply Last reply Reply Quote 0
              • Raffi_R
                Raffi_
                last edited by

                Try running a packet capture on the DMZ of pfSense.
                Diagnostics/ Packet Capture
                Select DMZ, then in Count enter a very high value such as 10000. You can enter 0 but don't forget to stop the capture manually otherwise it will run a continuous capture and it can become a problem.

                Download the capture data to wireshark and check for DNS info.

                Dumb question, but have you tried to ping 8.8.8.8 from ubuntu? Does that work or is that failing as well?

                F 2 Replies Last reply Reply Quote 0
                • F
                  Farisse @Raffi_
                  last edited by

                  @Raffi_ said in Internet on windows but not ubuntu bad pfsense configuration?:

                  Dumb question, but have you tried to ping 8.8.8.8 from ubuntu? Does that work or is that failing as well?

                  Nope doesn't work because its blocked by the school.

                  I'll try the packet in a few minutes

                  Raffi_R 1 Reply Last reply Reply Quote 0
                  • Raffi_R
                    Raffi_ @Farisse
                    last edited by

                    @Farisse said in Internet on windows but not ubuntu bad pfsense configuration?:

                    @Raffi_ said in Internet on windows but not ubuntu bad pfsense configuration?:

                    Dumb question, but have you tried to ping 8.8.8.8 from ubuntu? Does that work or is that failing as well?

                    Nope doesn't work because its blocked by the school.

                    I'll try the packet in a few minutes

                    ICMP is blocked or google DNS server specifically is blocked?

                    1 Reply Last reply Reply Quote 0
                    • F
                      Farisse
                      last edited by

                      ICMP I guess. I can ping outside the network but not 8.8.8.8 or 8.8.4.4 I wont recieve any result wit this commands i began the ping on ubuntu and then on the windows machine who got internet:

                      086ed859-11b6-4a63-b7b7-8e99662291b9-image.png

                      1 Reply Last reply Reply Quote 0
                      • F
                        Farisse @Raffi_
                        last edited by

                        @Raffi_ said in Internet on windows but not ubuntu bad pfsense configuration?:

                        Select DMZ, then in Count enter a very high value such as 10000. You can enter 0 but don't forget to stop the capture manually otherwise it will run a continuous capture and it can become a problem.
                        Download the capture data to wireshark and check for DNS info.

                        So apparently my ubuntu machine does not send any dns request :

                        2225e6fe-06a3-4207-82a3-72f4b6608b51-image.png

                        Raffi_R 1 Reply Last reply Reply Quote 0
                        • Raffi_R
                          Raffi_ @Farisse
                          last edited by

                          @Farisse said in Internet on windows but not ubuntu bad pfsense configuration?:

                          So apparently my ubuntu machine does not send any dns request :

                          2225e6fe-06a3-4207-82a3-72f4b6608b51-image.png

                          That's not good. Is it even able to talk to pfSense at all? Can you ping pfSense (192.168.1.1) from Ubuntu?

                          1 Reply Last reply Reply Quote 0
                          • F
                            Farisse
                            last edited by

                            Yup but not able to ping windows machine

                            709f9d29-bf60-4c42-92a0-401482698b4d-image.png

                            Raffi_R 1 Reply Last reply Reply Quote 0
                            • Raffi_R
                              Raffi_ @Farisse
                              last edited by

                              @Farisse said in Internet on windows but not ubuntu bad pfsense configuration?:

                              Yup but not able to ping windows machine

                              709f9d29-bf60-4c42-92a0-401482698b4d-image.png

                              It can't ping Windows because by default Windows does not respond to ping. That has to be manually enabled in Windows. It is responding to pfSense though. So at least there is some sign of life there.

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                              • F
                                Farisse
                                last edited by

                                Damn forgot to disable fw on this windows machine. >.<"

                                So apparently I don't know why, I suddenly have internet on my ubuntu machine.

                                I did not change anything i've reset my ubuntu vm twice to be sure and it seems to work. What the hell is going on here :o i think i'm losing my mind

                                Raffi_R DaddyGoD 2 Replies Last reply Reply Quote 0
                                • Raffi_R
                                  Raffi_ @Farisse
                                  last edited by

                                  @Farisse said in Internet on windows but not ubuntu bad pfsense configuration?:

                                  Damn forgot to disable fw on this windows machine. >.<"

                                  So apparently I don't know why, I suddenly have internet on my ubuntu machine.

                                  I did not change anything i've reset my ubuntu vm twice to be sure and it seems to work. What the hell is going on here :o i think i'm losing my mind

                                  lol don't touch it. You have a number of things which don't make sense. Like for instance the ping to pfSense is taking on average 600ms. In reality it should be more like 6ms. You have two extra zeros of delay. That's not good.

                                  1 Reply Last reply Reply Quote 1
                                  • F
                                    Farisse
                                    last edited by Farisse

                                    Haha i won't but hope it will work when i will need it ! :D
                                    Apparently even this is fixed. :

                                    192.168.1.1 is my gateway to pfsense and 192.168.0.50 is pfsense ip..

                                    0142f8fb-0651-4261-962b-0d1eea4fd6c6-image.png

                                    I really hope it will stay working as i need it crossfingers

                                    Many thanks for your help guys!

                                    1 Reply Last reply Reply Quote 0
                                    • DaddyGoD
                                      DaddyGo @Farisse
                                      last edited by

                                      @Farisse said in Internet on windows but not ubuntu bad pfsense configuration?:

                                      Damn forgot to disable fw on this windows machine. >.<"

                                      you donโ€™t have to disable it all, just use this ๐Ÿ˜‰

                                      netsh advfirewall firewall add rule name="ICMP Allow incoming V4 echo request" protocol=icmpv4:8,any dir=in action=allow

                                      Cats bury it so they can't see it!
                                      (You know what I mean if you have a cat)

                                      F 1 Reply Last reply Reply Quote 1
                                      • F
                                        Farisse @DaddyGo
                                        last edited by

                                        @DaddyGo

                                        Oow Nice good to know !! I actually disabled the fw just for testing, after the test i would reanable the firewalls but very good to know for my other servers maybe !! Thank you ! ๐Ÿ’ฏ๐Ÿ˜

                                        DaddyGoD 1 Reply Last reply Reply Quote 0
                                        • DaddyGoD
                                          DaddyGo @Farisse
                                          last edited by

                                          @Farisse

                                          you welcome ๐Ÿ˜‰

                                          Cats bury it so they can't see it!
                                          (You know what I mean if you have a cat)

                                          1 Reply Last reply Reply Quote 1
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