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    Pfsense and network DNS

    Scheduled Pinned Locked Moved DHCP and DNS
    dnspfsense 2.7
    27 Posts 3 Posters 2.9k Views
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    • johnpozJ
      johnpoz LAYER 8 Global Moderator @swampland7794
      last edited by

      @swampland7794 well when you do your dns lookup now under diagnostics what do you see.. From your screenshot before that IP answered - but looks like it couldn't lookup google.. But showed a 0 ms response time..

      Query something you know your local dns has a record for, or can lookup.. do a simple query to it with your fav tool other than pfsense for example..

      dig.jpg

      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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      • J
        jrey @johnpoz
        last edited by

        @johnpoz said in Pfsense and network DNS:

        seems unlikely that a new user would be doing that

        True, but you never know, if you don't ask.
        Take my wife for example. Give her a piece of tech and she pokes buttons "learning". then in a few days hands the device back to me, and says "it is broken, can you make it go". First question is always, "so what did you poke?".

        Maybe he setup some soft of pfblocker rules that are doing it?

        not likely. Although there was a report a while back, that one of the "lists" had added 9.9.9.9 (in error) and anyone using that list, with that DNS suddenly didn't resolve.

        in the very first post,

        @swampland7794 said in Pfsense and network DNS:

        I have a mini server with technitium DNS server on it and I changed pfsense general settings to have this device as the only DNS server,

        I noticed that all of my devices are using my DNS server except pfsense itself.

        The IP address for DNS at 203.x.y.z doesn't seem like his local "have a mini server with technitium DNS server"

        that address seems more like

        inetnum:        203.128.32.0 - 203.128.63.255
        netname:        SawasNet
        descr:          Beijing Sawas Technology Co.LTD.
        descr:          Room 608,Beihang Boyan Building,No.238 Fouth
        descr:          Northern Central Road,Haidian District,Beijing
        country:        CN
        
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        • S
          swampland7794 @johnpoz
          last edited by

          @johnpoz I chose Google and my docker server.

          Screenshot_20231222_100255_JuiceSSH.jpg

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          • S
            swampland7794 @jrey
            last edited by

            @jrey I manually set my subnet to something obscure like 203.128.45.0/24 which puts my pfsense box at 203.128.45.1 and my mini server at 203.128.45.2

            J johnpozJ 2 Replies Last reply Reply Quote 0
            • J
              jrey @swampland7794
              last edited by

              @swampland7794 said in Pfsense and network DNS:

              set my subnet to something obscure

              randomly or do you own the address space?

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              • S
                swampland7794 @jrey
                last edited by

                @jrey randomly

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                • johnpozJ
                  johnpoz LAYER 8 Global Moderator @swampland7794
                  last edited by johnpoz

                  @swampland7794 said in Pfsense and network DNS:

                  ubnet to something obscure like 203.128.45.0/24

                  Yeah NOT a good idea at all, while technically you can do it - its a horrible idea to do that.. that space is owned by

                  inetnum:        203.128.32.0 - 203.128.63.255
                  netname:        SawasNet
                  descr:          Beijing Sawas Technology Co.LTD.
                  

                  Whatever your doing your query to refused it.. You would have to look to the acl you have set on that NS your sending the queries too.

                  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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                  • J
                    jrey @johnpoz
                    last edited by

                    @johnpoz

                    so what I said regarding ownership (good we agree) : 😊

                    @swampland7794

                    https://en.wikipedia.org/wiki/Private_network

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

                      @jrey yeah its horrible practice to just pull public space out of thin air and use it locally.. You have all of rfc1918 to use, there is zero reason to use public space that you do not own.

                      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

                      S 1 Reply Last reply Reply Quote 0
                      • S
                        swampland7794 @johnpoz
                        last edited by

                        @johnpoz oh that's bad. I changed it to 192.168.45.0/24. Thanks for telling me!

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                        • S
                          swampland7794 @swampland7794
                          last edited by

                          @swampland7794 I changed the DNS address to 1.1.1.1 and changed the subnet... I messed my home network and I don't have access. I'll fix it when I get home tonight and we'll see if that resolved my issue.

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