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How to setup a Host Override

Scheduled Pinned Locked Moved DHCP and DNS
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  • J
    jimfreeze @johnpoz
    last edited by Nov 12, 2021, 3:17 PM

    @johnpoz This is the current general setup screen. I think the only change is the "DNS Server Override" is checked.

    Screen Shot 2021-11-12 at 9.10.21 AM.png

    The pfsense is the only router in the house other than the ATT modem, which is configured as passthrough DHCPS-dynamic and is handing out addresses

    DHCPv4 Start Address	192.168.1.64
    DHCPv4 End Address	192.168.1.253
    

    All addresses inside the LAN are 192.168.100.0/24.

    1 Reply Last reply Reply Quote 0
    • J
      jimfreeze
      last edited by Nov 12, 2021, 3:26 PM

      So, there is this on the Dashboard.

      DNS server(s)	
        `127.0.0.1`
        `192.168.1.254`
        `2600:1702:4c72:c400::100:`
      
      J 1 Reply Last reply Nov 12, 2021, 3:30 PM Reply Quote 0
      • J
        johnpoz LAYER 8 Global Moderator @jimfreeze
        last edited by Nov 12, 2021, 3:30 PM

        @jimfreeze well clearly your client isn't using what dhcp handing out..

        Why are you pointing dns to itself there in general - out of the box that should just be nothing, and your also allowing overide from dhcp on wan.

        What does your dhcp show..

        dhcpserver.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 Nov 12, 2021, 3:36 PM Reply Quote 0
        • J
          jimfreeze @johnpoz
          last edited by Nov 12, 2021, 3:36 PM

          @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 J 2 Replies Last reply Nov 12, 2021, 3:43 PM Reply Quote 0
          • J
            jimfreeze @jimfreeze
            last edited by Nov 12, 2021, 3:43 PM

            @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.
            
            1 Reply Last reply Reply Quote 0
            • J
              johnpoz LAYER 8 Global Moderator @jimfreeze
              last edited by johnpoz Nov 12, 2021, 3:46 PM Nov 12, 2021, 3:44 PM

              @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

              J 1 Reply Last reply Nov 12, 2021, 4:00 PM Reply Quote 0
              • J
                jimfreeze @johnpoz
                last edited by Nov 12, 2021, 4:00 PM

                @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

                J 1 Reply Last reply Nov 12, 2021, 4:09 PM Reply Quote 0
                • J
                  johnpoz LAYER 8 Global Moderator @jimfreeze
                  last edited by johnpoz Nov 12, 2021, 4:10 PM Nov 12, 2021, 4:09 PM

                  @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

                  J 1 Reply Last reply Nov 12, 2021, 8:28 PM Reply Quote 0
                  • J
                    jimfreeze @johnpoz
                    last edited by Nov 12, 2021, 8:28 PM

                    @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

                    J 1 Reply Last reply Nov 12, 2021, 8:31 PM Reply Quote 0
                    • J
                      johnpoz LAYER 8 Global Moderator @jimfreeze
                      last edited by Nov 12, 2021, 8:31 PM

                      @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

                      J 1 Reply Last reply Nov 12, 2021, 8:38 PM Reply Quote 0
                      • J
                        jimfreeze @johnpoz
                        last edited by Nov 12, 2021, 8:38 PM

                        @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

                        J 1 Reply Last reply Nov 12, 2021, 8:53 PM Reply Quote 0
                        • J
                          johnpoz LAYER 8 Global Moderator @jimfreeze
                          last edited by johnpoz Nov 12, 2021, 8:53 PM Nov 12, 2021, 8:53 PM

                          @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

                          J 1 Reply Last reply Nov 12, 2021, 8:57 PM Reply Quote 0
                          • J
                            jimfreeze @johnpoz
                            last edited by Nov 12, 2021, 8:57 PM

                            @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
                            
                            J 1 Reply Last reply Nov 12, 2021, 9:22 PM Reply Quote 0
                            • J
                              johnpoz LAYER 8 Global Moderator @jimfreeze
                              last edited by Nov 12, 2021, 9:22 PM

                              @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

                              J 1 Reply Last reply Nov 12, 2021, 9:45 PM Reply Quote 0
                              • J
                                jimfreeze @johnpoz
                                last edited by Nov 12, 2021, 9:45 PM

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

                                J 1 Reply Last reply Nov 12, 2021, 9:48 PM Reply Quote 0
                                • J
                                  johnpoz LAYER 8 Global Moderator @jimfreeze
                                  last edited by johnpoz Nov 12, 2021, 9:49 PM Nov 12, 2021, 9:48 PM

                                  @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 Nov 12, 2021, 9:58 PM Reply Quote 0
                                  • J
                                    jimfreeze @johnpoz
                                    last edited by Nov 12, 2021, 9:58 PM

                                    @johnpoz It appears to be listening on all.

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

                                    1 Reply Last reply Reply Quote 0
                                    • U
                                      Uglybrian
                                      last edited by Nov 12, 2021, 10:53 PM

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

                                      J 1 Reply Last reply Nov 12, 2021, 11:18 PM Reply Quote 0
                                      • J
                                        jimfreeze @Uglybrian
                                        last edited by Nov 12, 2021, 11:18 PM

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

                                        % ping pfsense.lan
                                        ping: cannot resolve pfsense.lan: Unknown host
                                        
                                        J 1 Reply Last reply Nov 12, 2021, 11:44 PM Reply Quote 0
                                        • J
                                          johnpoz LAYER 8 Global Moderator @jimfreeze
                                          last edited by johnpoz Nov 12, 2021, 11:45 PM Nov 12, 2021, 11:44 PM

                                          @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

                                          J 1 Reply Last reply Nov 12, 2021, 11:58 PM Reply Quote 0
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