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Internet on windows but not ubuntu bad pfsense configuration?

Scheduled Pinned Locked Moved General pfSense Questions
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  • R
    Raffi_ @Farisse
    last edited by Jul 16, 2020, 3:30 PM

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

    Should the pfSense DHCP lease table show me the static ip from my vms ?

    Also, going back to @stephenw10 question on DHCP leases. That needs to be cleared up.

    F 1 Reply Last reply Jul 16, 2020, 3:40 PM Reply Quote 0
    • F
      Farisse @Raffi_
      last edited by Jul 16, 2020, 3:40 PM

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

      That needs to be cleared up
      ab03e6ef-f63e-4a24-965b-2c6d5d2510e0-image.png

      I activated dns resolver with forwarding but still doesn't work.

      I try it with Chrome and i receive this error:
      6789f615-6acc-4bd2-b805-6d46109a08df-image.png

      R 1 Reply Last reply Jul 16, 2020, 3:44 PM Reply Quote 0
      • S
        stephenw10 Netgate Administrator
        last edited by Jul 16, 2020, 3:41 PM

        Yeah that is catastrophically bad! Something is very broken there.

        I guess the DNS timeout in Windows is higher which is why it worked.

        You don't see localhost there so you probably have 'Do not use the DNS Forwarder/DNS Resolver as a DNS server for the firewall' set in System > General setup. That doesn't make much difference unless you have host overrides there the firewall should use.

        Steve

        R F 2 Replies Last reply Jul 16, 2020, 3:51 PM Reply Quote 0
        • D
          DaddyGo @Raffi_
          last edited by Jul 16, 2020, 3:44 PM

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

          Woaw 8 seconds for a query could be your issue. Those DNS servers are used only for this DMZ?

          I thought I would note this too, but I rather skipped it, hihihihhi 👍 😉

          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
          • R
            Raffi_ @Farisse
            last edited by Jul 16, 2020, 3:44 PM

            I activated dns resolver with forwarding but still doesn't work.

            I try it with Chrome and i receive this error:
            6789f615-6acc-4bd2-b805-6d46109a08df-image.png

            Try it a second time. Once unbound caches it, it should come right up the second time.

            1 Reply Last reply Reply Quote 0
            • R
              Raffi_ @stephenw10
              last edited by Jul 16, 2020, 3:51 PM

              @stephenw10 said in Internet on windows but not ubuntu bad pfsense configuration?:

              You don't see localhost there so you probably have 'Do not use the DNS Forwarder/DNS Resolver as a DNS server for the firewall' set in System > General setup. That doesn't make much difference unless you have host overrides there the firewall should use.

              Steve

              Would dnsmaq use the local host as well or is that only the default for unbound?

              D 1 Reply Last reply Jul 16, 2020, 4:03 PM Reply Quote 0
              • F
                Farisse @stephenw10
                last edited by Farisse Jul 16, 2020, 3:58 PM Jul 16, 2020, 3:57 PM

                @stephenw10 Its not after you told me i should probably have the localhost as respond i remembered i had in the beginning in general information the localhost and then not anymore. So i've add it back with the dns server (good or wrong way idk) But ly query is a lot faster now.
                9c593d97-30bd-4262-9b1c-0fda6f9bc8c3-image.png
                But the option "Do not use the DNS Forwarder/DNS Resolver as a DNS server for the firewall " is not set in.
                952c42a0-8e53-44fa-8e68-fb174493134d-image.png

                @Raffi_ I also tried it a second and third time, but no result. Or ... the same result.

                1 Reply Last reply Reply Quote 0
                • R
                  Raffi_
                  last edited by Raffi_ Jul 16, 2020, 4:07 PM Jul 16, 2020, 4:01 PM

                  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 Jul 16, 2020, 4:22 PM Reply Quote 0
                  • D
                    DaddyGo @Raffi_
                    last edited by Jul 16, 2020, 4:03 PM

                    @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 Jul 16, 2020, 4:22 PM

                      @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
                      • R
                        Raffi_
                        last edited by Raffi_ Jul 16, 2020, 6:02 PM Jul 16, 2020, 6:02 PM

                        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 Jul 16, 2020, 6:18 PM Jul 16, 2020, 6:11 PM

                          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
                          • R
                            Raffi_
                            last edited by Jul 16, 2020, 6:28 PM

                            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 Jul 16, 2020, 6:30 PM Reply Quote 0
                            • F
                              Farisse @Raffi_
                              last edited by Jul 16, 2020, 6:30 PM

                              @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

                              R 1 Reply Last reply Jul 16, 2020, 6:32 PM Reply Quote 0
                              • R
                                Raffi_ @Farisse
                                last edited by Jul 16, 2020, 6:32 PM

                                @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 Jul 16, 2020, 6:38 PM

                                  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 Jul 16, 2020, 6:50 PM

                                    @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

                                    R 1 Reply Last reply Jul 16, 2020, 7:09 PM Reply Quote 0
                                    • R
                                      Raffi_ @Farisse
                                      last edited by Jul 16, 2020, 7:09 PM

                                      @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 Jul 16, 2020, 7:14 PM

                                        Yup but not able to ping windows machine

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

                                        R 1 Reply Last reply Jul 16, 2020, 7:15 PM Reply Quote 0
                                        • R
                                          Raffi_ @Farisse
                                          last edited by Jul 16, 2020, 7:15 PM

                                          @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.

                                          1 Reply Last reply Reply Quote 0
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