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OpenDnS not working

Scheduled Pinned Locked Moved DHCP and DNS
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  • D
    doktornotor Banned
    last edited by Jun 19, 2015, 4:15 PM

    For starters, 2.2.x is using DNS resolver (unbound) instead of DNS forwarder (dnsmasq). So yeah, a whole lot changed, there are the fine release notes/changelogs on the blog/wiki. Useful to read those.

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    • K
      KOM
      last edited by Jun 19, 2015, 4:23 PM

      DHCP will already serve the pfSense LAN IP for DNS by default so DHCP clients should be working already.  If your clients are static IP, then you need to configure their network settings and specify pfSense LAN IP as their DNS server.  Lastly, you need to edit your LAN firewall rules to prevent your clients from editing their DNS settings and using external DNS:

      https://doc.pfsense.org/index.php/Blocking_DNS_queries_to_external_resolvers

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      • D
        doktornotor Banned
        last edited by Jun 19, 2015, 4:27 PM

        @KOM:

        DHCP will already serve the pfSense LAN IP for DNS by default so DHCP clients should be working already.

        No, not with Unbound. It won't use anything in System - General by default.

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        • W
          wbennett77
          last edited by Jun 19, 2015, 4:46 PM

          https://doc.pfsense.org/index.php/Unbound_DNS_Resolver - Look for "Enable Forwarding Mode"

          Dell Optiplex 390 Pfsense 2.2 / Asus AC56U Wireless AP / Asus Switch

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          • J
            JSM11
            last edited by Jun 19, 2015, 5:07 PM

            All working now guys thanks :)

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            • K
              KOM
              last edited by Jun 19, 2015, 5:18 PM

              No, not with Unbound. It won't use anything in System - General by default.

              Ah yes, I checked the option and it will offer pfSense LAN IP if DNS Forwarder is enabled, otherwise it will offer the DNS configured in General Settings.

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              • D
                doktornotor Banned
                last edited by Jun 19, 2015, 5:34 PM

                @KOM:

                No, not with Unbound. It won't use anything in System - General by default.

                Ah yes, I checked the option and it will offer pfSense LAN IP if DNS Forwarder is enabled, otherwise it will offer the DNS configured in General Settings.

                That misleading description in DHCP server settings is already fixed in 2.2.3 snapshots:

                "NOTE: leave blank to use the system default DNS servers - this interface's IP if DNS Forwarder or Resolver is enabled, otherwise the servers configured on the General page.

                Point being - unbound won't forward anything anywhere by default, it does the resolution itself.

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                • P
                  phil.davis
                  last edited by Jun 28, 2015, 8:47 AM

                  I'll put a summary here that will hopefully help future readers:

                  If you want to use particular DNS servers out on the internet to do some filtered DNS for you (e.g. OpenDNS or DynDNS Internet Guide or…) then your DNS on pfSense must be in forwarding mode.
                  a) If DNS Forwarder is enabled - then it always does forwarding mode - easy, done.
                  b) If DNS Resolver is enabled - then select the checkbox to "Enable Forwarding Mode".

                  Put the special DNS servers in System->General.

                  If you are using DHCP on pfSense then let it do its default thing - it will give the clients the pfSense interface IP as the DNS, and pfSense DNS is in forwarding mode to those.

                  For clients with hard-coded static IPs - set their DNS manually to the pfSense interface IP.

                  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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                  • M
                    maverik1
                    last edited by Sep 1, 2015, 5:32 AM Sep 1, 2015, 4:59 AM

                    I am unable to get this working…pain in butt with so many tabs dealing with DNS.... I've specified OpenDNS servers under General Setup and made sure Allow DNS server list to be overridden by DHCP option was unchecked. I also specified same OpenDNS servers under DHCP server. Rebooted my machines, cleared cache, cookies, history from browser... ran ipconfig /flushdns...  When I do an ipconfig /all  DNS server shows 192.168.1.1 which is the dhcp server/gateway and so forth.

                    I've also verified my IP has been updated with OpenDNS. I've setup Dynamic DNS as well and its working.  If I go to Diagnostics and do DNS Lookup I can see it is using OpenDNS servers:

                    Server Query time
                    208.67.222.222 22 msec
                    208.67.220.220 24 msec

                    Why is it not working?

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                    • D
                      drurb75
                      last edited by Feb 19, 2016, 9:10 AM

                      New to forums - first ever post.  Bear with me if I break the rules.

                      This thread helped confirm I was on the right path - thanks Phil for the succinct solution.

                      Following on the solution you offered, which is correct, there is one extra setting I found blocking me from forwarding from unbound to OpenDNS specifically; Unchecking the advanced unbound setting to Harden DNSSEC Data allowed me to forward to that service.  Note, Google DNS was working with the Harden DNSSEC setting enabled.

                      One extra point on static / user-set DNS settings in devices on the network - Port Forward traffic into LAN interface that has a DNS (port 53) destination IP that is not the LAN interface IP to the LAN interface IP.  No more sneaking around your network-wide DNS settings.

                      Hope this helps someone.

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                      • D
                        dabigoreo
                        last edited by Feb 19, 2016, 5:17 PM

                        Newbie here. Had a similar problem with OpenDNS as well. During initial setup I used the OpenDNS entries on the General page and could not figure out why the welcome test page for OpenDNS said I wasn't configured properly. I eventually figured out that forwarding needed to be turned on for the DNS Resolver (default mode on initial install). This kinda fixed things but then I noticed a lot of websites were not resolving or taking a very long time to resolve. I changed gears by turning off DNS Resolver and enabling DNS Forwarder - all dns issues went away and OpenDNS confirmation was achieved. Hope this helps other newbies to pfsense.  8)

                        fw: 2.3-RELEASE(amd64)
                        packages: Snort, Nmap

                        system: Dell Optiplex 745 desktop
                        cpu: Intel Pentium D 3.4GHz
                        ram: 4GB DDR2
                        wan nic: Broadcom Gbe
                        lan nic: Marvell Gbe

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                        • S
                          strawberrypacketjam Rebel Alliance
                          last edited by Nov 26, 2017, 10:33 PM

                          I know this is a bit old, but I just wanted to confirm that disabling the Harden DNSSEC Data and enabling DNS Query Forwarding will allow OpenDNS to work.

                          Enabling the DNS Query Forwarding on the resolver will break DNS for clients if Harden DNSSEC Data is enabled. I was kicking all around trying to get this working.

                          Disable Harden DNSSEC Data:
                          Services > DNS Resolver > Advanced Settings > Uncheck Harden DNSSEC Data
                          Services > DNS Resolver > Check DNS Query Forwarding

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                          • GertjanG
                            Gertjan
                            last edited by Nov 29, 2017, 2:41 PM

                            @strawberrypacketjam:

                            I know this is a bit old, but I just wanted to confirm that disabling the Harden DNSSEC Data and enabling DNS Query Forwarding will allow OpenDNS to work.

                            Enabling the DNS Query Forwarding on the resolver will break DNS for clients if Harden DNSSEC Data is enabled. I was kicking all around trying to get this working.

                            Disable Harden DNSSEC Data:
                            Services > DNS Resolver > Advanced Settings > Uncheck Harden DNSSEC Data
                            Services > DNS Resolver > Check DNS Query Forwarding

                            Today, November 2017, OpenDNS isn't doing any DNSSEC yet, and worse, by concept it can't pass along the DNS requests without breaking the security chain.

                            No "help me" PM's please. Use the forum, the community will thank you.
                            Edit : and where are the logs ??

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                            • T
                              ThatGuy
                              last edited by Nov 26, 2018, 8:42 PM

                              Well, it's now November 2018 and OpenDNS still does not support DNSSEC. Good to see things have changed a lot in a year.

                              ThatGuy

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                              • jimpJ
                                jimp Rebel Alliance Developer Netgate
                                last edited by Nov 26, 2018, 9:02 PM

                                Why would they support DNSSEC? One of their primary purposes is to alter DNS replies to do things DNSSEC is designed to prevent.

                                Remember: Upvote with the 👍 button for any user/post you find to be helpful, informative, or deserving of recognition!

                                Need help fast? Netgate Global Support!

                                Do not Chat/PM for help!

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                                • Cloudless Smart HomeC
                                  Cloudless Smart Home
                                  last edited by Jan 27, 2023, 1:24 AM

                                  this helped me, the last few entries, but here is what fixed it for me in
                                  2023...

                                  Services > DNS Resolver > Advanced Settings > Left it checked
                                  Services > DNS Resolver > Check DNS Query Forwarding

                                  seems like I am using OpenDNS, like I wanted, but still able to use my dns resolver so I can do host overrides and anything else I want to do in DNS.

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