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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 and when you go to the dns lookup under diagnostic menu and lookup something, what does it show?

      lookup.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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      • S
        swampland7794 @johnpoz
        last edited by

        @johnpoz this is a new installation, I tried the new DHCP server and I couldn't figure it out, then continued with IS DHCP. I setup OpenVPN according to a YouTube video, then setup cloudflare ddns which didn't work with OpenVPN, so I use my public IP to connect my VPN, after that it was just me needing with anything that said "DNS".

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

          @swampland7794 not sure what that has to do with what dns pfsense uses? Here I posted pfsense to local dns I spun up.. And set pfsense to point there for its dns, and that is what it is using as you can see from dns lookup

          test.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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          • S
            swampland7794 @johnpoz
            last edited by

            @johnpoz Host "www.google.com" could not be resolved.
            DNS Lookup
            Hostname
            Timings
            Name server Query time
            127.0.0.1 No response
            2001:558:feed::1 No response
            2001:558:feed::2 No response
            203.128.45.2 0 msec

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

              @swampland7794 well clearly you didn't set it to ignore local.. Or it would of never tried asking 127.0.0.1

              ignorelocal.jpg

              When you changed that drop down to use remote, ignore local did you scroll to the bottom and hit save? Did you see it say

              applied.jpg

              You prob also want to uncheck that let wan override dns settings - see my screenshot

              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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              • S
                swampland7794 @johnpoz
                last edited by

                @johnpoz I would would send you a screenshot, but I can't figure out how to upload one from Android. That's what my options are set to under general settings. It shouldn't use 127.0.0.1 since that's the loopback address.

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

                  @swampland7794 said in Pfsense and network DNS:

                  It shouldn't use 127.0.0.1 since that's the loopback address.

                  Not if you set it to use remote and ignore local.. As to posting a screen shot use this button

                  post.jpg

                  Or you could use this to post some external image

                  external.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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                  • S
                    swampland7794 @johnpoz
                    last edited by

                    @johnpoz thanks, I pressed the wrong icon.
                    Screenshot_20231222_093230_Firefox.jpg

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                    • S
                      swampland7794 @swampland7794
                      last edited by swampland7794

                      @swampland7794 I unchecked that option after the screenshot was taken.

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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

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                              • 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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                                  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

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                                        • 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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