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

    Internet on windows but not ubuntu bad pfsense configuration?

    Scheduled Pinned Locked Moved General pfSense Questions
    41 Posts 4 Posters 6.6k 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.
    • Raffi_R
      Raffi_
      last edited by

      For the DMZ are you using pfSense DNS Resolver in forwarding mode or DNS forwarder?
      Can you post screenshots of the DNS settings and if using forwarding also the DNS server settings in System / General Setup?

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

        Hi thank you for your answer,

        I actually enabled the DNS forwarder thinking it would forward the dns server that ar in my System / General Setup. But apparently not.
        Here are the screenshots :

        0e8c4045-74b2-4093-a7b9-3fd7f56ab4fa-image.png
        20448b15-a9d7-4b98-be5f-5753862fc8ff-image.png

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

          I'm not familiar with the DNS forwarder (dnsmasq) but that seems like it should work. What you can try is DNS Resolver in forwarding mode. See if you get any difference.

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

            Yup, it should i don't understand either why its not working.

            How should i do to put the DNS resolver in forwarding mode ?

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

              Before doing that maybe try some more troubleshooting.

              Try to run a dig from Ubuntu and maybe also from pfSense to compare the results.

              e.g.,
              dig google.com
              dig @8.8.8.8 google.com

              The first should use your default DNS server the second is using google's DNS server.

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

                Check pfSense itself can resolve. Test something in Diag > DNS Lookup. Be sure all configured servers respond, that should include 127.0.0.1.

                Make sure both VMs appear in the pfSense DHCP lease table. You might have something else handing out leases.

                Steve

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

                  @Raffi_

                  2eb42ba1-1715-4f55-bf57-a10fe653508d-image.png

                  @stephenw10

                  149f5d2b-90d5-4625-8b71-fa81da98d375-image.png

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

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

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

                    b2ffc793-9b7b-4d3b-9b69-94409528d420-image.png

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

                      Nope those are DNS servers on my school's network. :/ Can not work without them

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

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

                        Nope those are DNS servers on my school's network. :/ Can not work without them

                        ...Can not work with them either.

                        Edit
                        Something is very wrong there. Even if your were to ping a server at the furthest possible point on the planet, I would not expect a number like that.

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

                          Haha got me ! But actually it work but only on windows VMs and not on Ubuntu. Idk if ubuntu is using different dns ports (not at my knowledge) Or if pfSense is sending the dns request to the wrong servers ?

                          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?:

                            Haha got me ! But actually it work but only on windows VMs and not on Ubuntu. Idk if ubuntu is using different dns ports (not at my knowledge) Or if pfSense is sending the dns request to the wrong servers ?

                            Could it be that Ubuntu's query timeout is shorter than Windows?

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

                              I think using pfSense DNS resolver could help here since it would build up a cache.

                              676d0652-1ab4-445d-aaf7-8541847adbbe-image.png

                              3eee10ad-b053-4977-b3cd-44b5c2c0d520-image.png

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

                                Idk, but when i restart the services i can get internet on my ubuntu.
                                So maybe my ubuntu is making a link with the dns servers when nothing can intercept the packets.
                                And if pfsense if running again it can't 'wipe' packets when the connection is established so ubuntu vm still have internet.
                                But when i restart the ubuntu vm every connection is closed and could not be established again.

                                This is what i guess but i don't know how to fix it by a port forwarding or traceroute can't determine where it sucks :/

                                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?:

                                  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 Reply Quote 0
                                  • F
                                    Farisse @Raffi_
                                    last edited by

                                    @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

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

                                      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

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

                                        @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 ๐Ÿ‘ 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
                                        • Raffi_R
                                          Raffi_ @Farisse
                                          last edited by

                                          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
                                          • Raffi_R
                                            Raffi_ @stephenw10
                                            last edited by

                                            @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?

                                            DaddyGoD 1 Reply Last reply Reply Quote 0
                                            • First post
                                              Last post
                                            Copyright 2025 Rubicon Communications LLC (Netgate). All rights reserved.