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    Problem DNS - LAN

    Scheduled Pinned Locked Moved DHCP and DNS
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    • P
      phil.davis
      last edited by

      • In the General Setup does not put any value in the DNS

      If you have DHCP on WAN then check "Allow DNS server list to be overridden by DHCP/PPP on WAN" - then pfSense will get upstream DNS from the ISP DNS server/s.
      If you have static IP on WAN, then put DNS server/s in the boxes in General Setup. Use the IP addresses of your ISP DNS servers, or some public DNS (Google, OpenDNS…) Then pfSense will get upstream DNS from these.
      In all the above, the LAN clients will still get the pfSense LAN IP (DNS Forwarder)as their DNS server, which is what you want.

      As the Greek philosopher Isosceles used to say, "There are 3 sides to every triangle."
      If I helped you, then help someone else - buy someone a gift from the INF catalog http://secure.inf.org/gifts/usd/

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      • G
        gio79
        last edited by

        Hello

        I have a Static IP on the WAN, I set the DNS values ​​in the General Setup page and I have not set any value in the boxes below (you can see in the picture)

        Each client on the LAN has not set no value on relished ethernet card, if I go to Windows DOS I see that DHCP assigns an IP address and DNS as it gives me the address on the LAN to pfSense

        But I can not navigate sites

        Hello and thank you

        Immagine0.jpg_thumb
        Immagine0.jpg
        Immagine11.jpg_thumb
        Immagine11.jpg

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        • johnpozJ
          johnpoz LAYER 8 Global Moderator
          last edited by

          Is the dns forwarder running?  Can pfsense query dns using 8.8.8.8 ?

          From diag, dns lookup

          testpfsensedns.png_thumb
          testpfsensedns.png

          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
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          • G
            gio79
            last edited by

            Hello I have the DNS Forwarder active

            I did the test with DNS LOOKUP and you can see the result in the image

            I do not know what to do to run pfSense

            Hello and thank you

            Immagine1.jpg_thumb
            Immagine1.jpg

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            • johnpozJ
              johnpoz LAYER 8 Global Moderator
              last edited by

              Well from that way that looks, no dns forwarder is not running. Or does not know where to forward too.  Or you have it not listening on the interfaces you need it to listen on, etc.
              Since you got no response from 127.0.0.1 – notice mine got a response.

              Post screen of dns forwarder page

              dnsforwarder.png_thumb
              dnsforwarder.png

              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 2.7.2, 24.11

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              • G
                gio79
                last edited by

                Hello thanks for the help but it does not work

                On the DNS Forwarder I set the same values ​​that you have set

                On the General Setup what should I set?

                I have to make the rules on the firewall?

                Hello

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                • johnpozJ
                  johnpoz LAYER 8 Global Moderator
                  last edited by

                  Out of the box the default rules would be any any for the first lan interface.. If you add an OPT1 interface - say this 192.168.99 segment.. Then you would have to create rules on that interface to allow the traffic you want.

                  So in the attached you will see the firewall rules for my dmz segment.  192.168.3.0/24 in my case - this would be sim to your 192.168.99 segment

                  In my rules I allow traffic from the dmz segment to talk to my ntp server on my lan segment 192.168.1.0/24.. I allow traffic to my pfsense interface in that segment - in my case 192.168.3.253 for dns.  And I allow traffic not going to the local networks, ie my lan and wlan segments..

                  What are you firewall rules on your segment?  And validate that pfsense is listening on that interfaces IP for dns forwarding.  Simple netstat should show it.

                  [2.1.2-RELEASE][root@pfsense.local.lan]/root(3): netstat -an | grep .53
                  tcp6      0      0 *.53                  .                    LISTEN
                  tcp4      0      0 *.53                  .                    LISTEN
                  udp6      0      0 *.53                  .
                  udp4      0      0 *.53                  .

                  So you can see *.53 here this means its listening on ALL IPs that pfsense has..

                  So you can see a computer on that network can query pfsense for dns - which in turn goes and asks the dns server setup on it.

                  dnsquery.png_thumb
                  dnsquery.png
                  firewallrules.png_thumb
                  firewallrules.png

                  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 2.7.2, 24.11

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                  • S
                    sali147
                    last edited by

                    hello guys
                    I have problem with DNS, I have DHCP server on pfsense and my domain users can obtain from it,I have configured DNS server on DC also Microsoft Radius server for captive portal and DNS forwarder configured on pf,but now users when enter URL (e.g www.google.com) dns problem occur ,but when they enter 8.8.8.8 in Address Bar it opens the captive portal logon page and after authentication it brings the page.
                    any suggestion?

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                    • G
                      gio79
                      last edited by

                      Hello johnpoz

                      I tried to run the command
                      netstat-an | grep .53

                      but with the keyboard that I can not seem to do |

                      I do not know how to fix this DNS?

                      I did the command NSLOOKUP from a client on the LAN and I have results similar to yours except that there 's IP address of my pfSense

                      help help

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                      • johnpozJ
                        johnpoz LAYER 8 Global Moderator
                        last edited by

                        If you did a nslookup and get the results like mine - then your dns is working..

                        So what exactly do you think is not working?  And what kind of keyboard does not do |  – normal keyboard it would same key as \ above your enter/return key -- and you don't really need to do that part - thats just so you don't get a full listing.. You could do just netstat -an

                        You know you could of just copied and pasted my command, etc.  Did you fall off the turnip truck yesterday?

                        kbqwerty.png
                        kbqwerty.png_thumb

                        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 2.7.2, 24.11

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                        • G
                          gio79
                          last edited by

                          Hello I decided to reset the machine pfSense and start from scratch to figure out where the problem is

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                          • johnpozJ
                            johnpoz LAYER 8 Global Moderator
                            last edited by

                            So that was 30 minutes ago.. You should be up and running already, it takes all of like 5 minutes to get pfsense up and running from scratch..  Unless your dicking with something - the default settings would have you up and running with dns, dhcp bing bang zoom.

                            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 2.7.2, 24.11

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                            • G
                              gio79
                              last edited by

                              Hello I have noticed one thing on my LAN, excluding pfSense I have this situation:

                              • If I put a PC in DHCP and DNS worthless router assigns me an IP address because the DHCP is enabled on the router and DNS as I 212 216 112 112 who are my ISP's DNS, and in this situation I go on the internet no problem

                              • If I put a pc and I go to set the IP address without DNS but I do not surf on the internet

                              Now I'm redoing the pfSense machine and reboot from scratch and slowly we see that the problems I

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                              • johnpozJ
                                johnpoz LAYER 8 Global Moderator
                                last edited by

                                "- If I put a pc and I go to set the IP address without DNS but I do not surf on the internet"

                                How exactly do you think you can surf the internet without dns?? So duh!!  if you don't set dns internet wouldn't work.

                                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 2.7.2, 24.11

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                                • G
                                  gio79
                                  last edited by

                                  Hello

                                  I installed pfSense from scratch and I saw that there was a mistake when I went to set the LAN card on pfSense, in fact, put the Gateway, and it would not let me run anything …. in fact if I went on Status - Gateway I Gateway is the the WAN to the LAN, the LAN I deleted that everything works now via DNS Forwarder can block facebook

                                  Hello and thanks to all

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