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    How to setup a Host Override

    Scheduled Pinned Locked Moved DHCP and DNS
    58 Posts 4 Posters 11.0k Views
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    • J
      jimfreeze @johnpoz
      last edited by

      @johnpoz Ahh, sorry about self pointing dns address. That has been fixed.

      I was missing the config of the DHCP server. This is what I have now and it seems to work fine.

      Screen Shot 2021-11-12 at 9.34.14 AM.png

      Screen Shot 2021-11-12 at 9.36.02 AM.png

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

        @johnpoz Not sure if I still have an issue or not, but trying to access the router via DNS Override returns this message in the browser.

        Potential DNS Rebind attack detected, see http://en.wikipedia.org/wiki/DNS_rebinding
        Try accessing the router by IP address instead of by hostname.
        
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        • johnpozJ
          johnpoz LAYER 8 Global Moderator @jimfreeze
          last edited by johnpoz

          @jimfreeze if you would of left those just blank - they would point to interface address.

          Pointing to both pfsense and google is bad idea - you have no idea which of those your client might use. And if he asks google for your pfsense.local - he would get nx, and not going to ask any of his other listed NS for it - why should he - he got told it didn't exist, etc..

          you should only ever point client to NS that actually resolve the same way, be it with local records or with filtering, etc.. If you point to more than 1 NS, and they might not resolve stuff the same way you just asking for grief..

          edit: as to your rebind.. why would you not just access pfsense via its pfsense.home.arpa address? pfsense.local is not pfsense correct name, so yeah that could cause all kinds of issues..

          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
            jimfreeze @johnpoz
            last edited by

            @johnpoz So, here is the general setup:

            Screen Shot 2021-11-12 at 9.52.42 AM.png

            I removed all Host Overrides on DNS Resolver

            And here is the DHCP Server

            Screen Shot 2021-11-12 at 9.53.36 AM.png

            Clients receive the following when connecting

            #
            search home.arpa
            nameserver 192.168.100.1
            

            I'm not understanding how to access "pfsense.home.arpa". It returns the following when doing a DNS Lookup test

            Screen Shot 2021-11-12 at 9.59.42 AM.png

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

              @jimfreeze well you got something a bit wonky there.. the hostname of pfsense should resolve to its LAN ip..

              example.

              localIP.jpg

              Get rid of your allow wan dhcp to set dns in your general setup.. looks like your asking 192.168.1.254 for dns as well?

              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
                jimfreeze @johnpoz
                last edited by

                @johnpoz As far as I can tell, pfsense is getting the 192.168.1.254 resolver when it gets its address via DHCP from the ATT modem.

                I have unchecked "Allow DNS server list to be overridden by DHCP/PPP on WAN" from the general setup.

                Still getting a failure on DNS lookup.

                Screen Shot 2021-11-12 at 2.24.57 PM.png

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

                  @jimfreeze well is unbound even running? Pfsense name would what it resolves too out of the box..

                  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
                    jimfreeze @johnpoz
                    last edited by

                    @johnpoz I don't think unbound is running.

                    I went ahead and set up a Host Override for that domain.

                    Thank you for all the help.

                    Jim

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

                      @jimfreeze said in How to setup a Host Override:

                      I don't think unbound is running.

                      Then host overrides wouldn't be working either..

                      Do you have unbound listening on localhost? or All?

                      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
                        jimfreeze @johnpoz
                        last edited by

                        @johnpoz I'm not seeing unbound in the web GUI, but it has a process on the box.

                        unbound 84523   0.0  0.3  65236 28860  -  Ss   14:40      0:00.90 /usr/local/sbin/unbound -c /var/unbound/unbound.conf
                        
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                        • johnpozJ
                          johnpoz LAYER 8 Global Moderator @jimfreeze
                          last edited by

                          @jimfreeze go to status services do you see it running?

                          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
                            jimfreeze @johnpoz
                            last edited by

                            @johnpoz Ahh, yes, thank you. It is running.

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

                              @jimfreeze well then it should timeout after 800 some ms.. for pfsense name.. Its right there in the file.. See mine sg4860.local.lan

                              shouldbetop.jpg

                              Again will ask - is it listening on all or if not all atleast has localhost (127.0.0.1) listed

                              listen.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

                              J 1 Reply Last reply Reply Quote 0
                              • J
                                jimfreeze @johnpoz
                                last edited by

                                @johnpoz It appears to be listening on all.

                                Screen Shot 2021-11-12 at 3.58.13 PM.png

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                                • U
                                  Uglybrian
                                  last edited by

                                  Hi, I am not sure but maybe you need to clear your state table.

                                  J 1 Reply Last reply Reply Quote 0
                                  • J
                                    jimfreeze @Uglybrian
                                    last edited by

                                    @uglybrian Hmmm. I reset the state table, and same result.

                                    % ping pfsense.lan
                                    ping: cannot resolve pfsense.lan: Unknown host
                                    
                                    johnpozJ 1 Reply Last reply Reply Quote 0
                                    • johnpozJ
                                      johnpoz LAYER 8 Global Moderator @jimfreeze
                                      last edited by johnpoz

                                      @jimfreeze why would you think .lan would work, you were using .local or home.arpa

                                      What does your /etc/hosts file have in it?

                                      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
                                        jimfreeze @johnpoz
                                        last edited by

                                        @johnpoz I haven't added anything to /etc/hosts.

                                        Is home.arpa special in some way?

                                        johnpozJ 1 Reply Last reply Reply Quote 0
                                        • U
                                          Uglybrian
                                          last edited by

                                          It’s your host name and domain. So pfsense.home.arpa

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

                                            @jimfreeze home.arpa is the new standard use local domain.

                                            https://datatracker.ietf.org/doc/html/rfc8375
                                            Special-Use Domain 'home.arpa.'

                                            And yes not exactly sure what exact version of pfsense moved to it vs .localdomain.. But from your previous post that is what you showed as your pfsense name and domain.. pfsense.home.arpa

                                            I kept meaning to move to it from my local.lan - but have a lot certs I have created using local.lan in them, and just haven't bothered to switch yet.

                                            I haven't added anything to /etc/hosts.

                                            Please show it like I did - this will show us what pfsense fqdn should be and any host overrides, etc. you have created. I just snipped mine because I have a lot of stuff in there and was just wanting to what my sg4860.local.lan is listed in there from my general page setup.

                                            BTW - are you using pfblocker? And have something odd setup there? But pfsense from the diag host lookup should for sure be able to lookup its own name ;)

                                            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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