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    DNS Resolver Log Error sending queries to 1.1.1.1

    DHCP and DNS
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    • P
      promo last edited by

      Hello All,

      I pointed my DNS Resolver to the CLOUDFLARE DNS Server for queries and I am getting the following error in the logs:

      Apr 4 00:02:24 unbound 8198:3 debug: tcp error for address 1.1.1.1 port 853
      Apr 4 00:02:24 unbound 8198:3 debug: outnettcp got tcp error -1
      Apr 4 00:02:24 unbound 8198:3 debug: cache memory msg=99133 rrset=121685 infra=5722 val=78919
      Apr 4 00:02:24 unbound 8198:3 debug: sending to target: <.> 1.1.1.1#853

      It seems that all my queries are resolved by the the secondary server(1.0.0.1) and not the primary. Any ideas why this would be?

      Thank you!

      chudak 1 Reply Last reply Reply Quote 0
      • C
        CRKus last edited by

        I'm having the same issue to both the ipv4 and ipv6 resolvers on 853.

        Everything is fine over port 53.

        Log excerpt…

        
        Apr  4 01:09:56 edi unbound: [51210:0] info: iterator operate: query ps-667.pubnub.com. A IN
        Apr  4 01:09:56 edi unbound: [51210:0] info: processQueryTargets: ps-667.pubnub.com. A IN
        Apr  4 01:09:56 edi unbound: [51210:0] info: sending query: ps-667.pubnub.com. A IN
        Apr  4 01:09:56 edi unbound: [51210:0] debug: sending to target: <.> 1.0.0.1#853
        Apr  4 01:09:56 edi unbound: [51210:0] debug: cache memory msg=37518 rrset=33048 infra=4193 val=33248
        Apr  4 01:09:56 edi unbound: [51210:0] debug: outnettcp got tcp error -1
        Apr  4 01:09:56 edi unbound: [51210:0] debug: tcp error for address 1.0.0.1 port 853
        Apr  4 01:09:56 edi unbound: [51210:0] debug: iterator[module 1] operate: extstate:module_wait_reply event:module_event_noreply
        
        

        Pcap on igb0 for port 853 show traffic going out and coming back.

        Running 'openssl s_client -connect 1.1.1.1:853' also works, so I know it's not an ISP block upstream.

        1 Reply Last reply Reply Quote 0
        • R
          rdlugosz last edited by

          Seeing similar issues on my end when trying to set up tcp forwarding:

          Apr  4 04:35:48 pfsense.home unbound: [33395:0] info: iterator operate: query ps-275.pubnub.com. A IN
          Apr  4 04:35:48 pfsense.home unbound: [33395:0] info: processQueryTargets: ps-275.pubnub.com. A IN
          Apr  4 04:35:48 pfsense.home unbound: [33395:0] info: sending query: ps-275.pubnub.com. A IN
          Apr  4 04:35:48 pfsense.home unbound: [33395:0] debug: sending to target: <.> 1.1.1.1#853
          Apr  4 04:35:48 pfsense.home unbound: [33395:0] debug: cache memory msg=52480 rrset=33048 infra=4193 val=33248
          Apr  4 04:35:49 pfsense.home unbound: [33395:0] debug: outnettcp got tcp error -1
          Apr  4 04:35:49 pfsense.home unbound: [33395:0] debug: tcp error for address 1.1.1.1 port 853
          Apr  4 04:35:49 pfsense.home unbound: [33395:0] debug: iterator[module 1] operate: extstate:module_wait_reply event:module_event_noreply

          I do see active states for port 853 on 1.1.1.1, so not sure why it isn't able to communicate. Not seeing anything like firewall blocking connections or anything like that… Note that I did not include the 1.0.0.1 server in my config while trying to debug this. I see the same results if I try Quad9's servers, too (9.9.9.9).

          edit: looks like switching to quad9 9.9.9.9 does work as expected. Must be something up with 1.1.1.1.

          1 Reply Last reply Reply Quote 0
          • ivor
            ivor last edited by

            We're seeing it as well. While we're investigating this issue, it seems to work with quad9 so I suggest you try it.

            1 Reply Last reply Reply Quote 0
            • P
              promo last edited by

              UPDATE: This morning I was not able to resolve any DNS Queries until I removed the CLOUDFLARE Config. My pfsense router cannot connect to either CLOUDFLARE Name Server over TLS.

              1 Reply Last reply Reply Quote 0
              • C
                CRKus last edited by

                @ivor:

                We're seeing it as well. While we're investigating this issue, it seems to work with quad9 so I suggest you try it.

                Yep, I switched to Quad9, and so far no issues working with them over 853.

                If it makes any difference, I'm using a SG-2220 appliance.

                EDIT:

                It occurs to me the above is probably not that helpful overall, so…

                
                System	
                Netgate SG-2220
                
                BIOS
                Vendor: coreboot
                Version: ADI_DFF2-01.00.00.17-nodebug
                Release Date: Mon Sep 18 2017 
                
                Version
                2.4.3-RELEASE (amd64) 
                built on Wed Mar 28 16:32:48 CDT 2018 
                FreeBSD 11.1-RELEASE-p7 
                
                CPU Type
                Intel(R) Atom(TM) CPU C2338 @ 1.74GHz
                2 CPUs: 1 package(s) x 2 core(s)
                AES-NI CPU Crypto: Yes (active)
                
                Hardware crypto
                AES-CBC,AES-XTS,AES-GCM,AES-ICM
                
                Kernel PTI
                Enabled
                
                
                1 Reply Last reply Reply Quote 0
                • P
                  promo last edited by

                  Thank you! I will try the QUAD9 Server.

                  1 Reply Last reply Reply Quote 0
                  • ivor
                    ivor last edited by

                    We have updated the blog post with Quad9 settings https://www.netgate.com/blog/dns-over-tls-with-pfsense.html

                    1 Reply Last reply Reply Quote 0
                    • C
                      CRKus last edited by

                      The Quad9 IPV4 and IPV6 resolvers are all working for me over TLS/853 with the same settings I was trying to use for CloudFlare.

                      ¯_(ツ)_/¯

                      1 Reply Last reply Reply Quote 0
                      • B
                        behemyth last edited by

                        I'm also getting the following error once i switch to using cloudflare

                        There were error(s) loading the rules: /tmp/rules.debug:19: cannot define table bogonsv6: Cannot allocate memory - The line in question reads [19]: table <bogonsv6> persist file "/etc/bogonsv6"
                        @ 2018-04-04 19:21:23

                        This is using 2.4.3 w/8gb of mem.

                        I'm pretty sure I saw this was being looked at in 2.4.4

                        1 Reply Last reply Reply Quote 0
                        • P
                          promo last edited by

                          Do we have to wait for an update for this to be fixed? Was anybody successful in getting the Cloudflare config to work?

                          Thanks!

                          1 Reply Last reply Reply Quote 0
                          • G
                            gsmornot last edited by

                            @promo:

                            Do we have to wait for an update for this to be fixed? Was anybody successful in getting the Cloudflare config to work?

                            Thanks!

                            It worked until this morning so I left the config in place and added entries for Quad9 as well. If they both provide the DNS TLS might as well have both in the list.

                            1 Reply Last reply Reply Quote 0
                            • P
                              promo last edited by

                              @gsmornot:

                              @promo:

                              Do we have to wait for an update for this to be fixed? Was anybody successful in getting the Cloudflare config to work?

                              Thanks!

                              It worked until this morning so I left the config in place and added entries for Quad9 as well. If they both provide the DNS TLS might as well have both in the list.

                              The point is to be able to use Cloudflare as the primary DNS since their service is faster.

                              1 Reply Last reply Reply Quote 0
                              • G
                                gsmornot last edited by

                                @promo:

                                @gsmornot:

                                @promo:

                                Do we have to wait for an update for this to be fixed? Was anybody successful in getting the Cloudflare config to work?

                                Thanks!

                                It worked until this morning so I left the config in place and added entries for Quad9 as well. If they both provide the DNS TLS might as well have both in the list.

                                The point is to be able to use Cloudflare as the primary DNS since their service is faster.

                                Agree but it does not work for me. If I only have Cloudflare in my config I cannot resolve.

                                Apr 5 09:08:16 unbound 70814:1 error: SSL_read syscall: Connection reset by peer

                                Quad9 works though.

                                1 Reply Last reply Reply Quote 0
                                • wgstarks
                                  wgstarks last edited by

                                  The Cloudflare settings still are not working and Cloudflare is reporting that they are not experiencing any service problems. Perhaps they have made some change that either inadvertently or deliberately blocks this? Regardless, it seems that it isn’t likely to work “as is”.

                                  Hope I’m wrong.😕

                                  1 Reply Last reply Reply Quote 0
                                  • P
                                    promo last edited by

                                    @wgstarks:

                                    The Cloudflare settings still are not working and Cloudflare is reporting that they are not experiencing any service problems. Perhaps they have made some change that either inadvertently or deliberately blocks this? Regardless, it seems that it isn’t likely to work “as is”.

                                    Hope I’m wrong.😕

                                    I was reading a post on one of the forums and some there seems to think this is a pfsense issue with the Cloudflare certificate.

                                    1 Reply Last reply Reply Quote 0
                                    • G
                                      gsmornot last edited by

                                      @promo:

                                      @wgstarks:

                                      The Cloudflare settings still are not working and Cloudflare is reporting that they are not experiencing any service problems. Perhaps they have made some change that either inadvertently or deliberately blocks this? Regardless, it seems that it isn’t likely to work “as is”.

                                      Hope I’m wrong.😕

                                      I was reading a post on one of the forums and some there seems to think this is a pfsense issue with the Cloudflare certificate.

                                      Stange thing is, it worked for two days before it stopped at @ Midnight local two nights ago.

                                      1 Reply Last reply Reply Quote 0
                                      • KOM
                                        KOM last edited by

                                        https://tech.slashdot.org/story/18/04/05/0420247/1111-cloudflares-new-dns-attracting-gigabits-per-second-of-rubbish

                                        If they can't handle the bogus traffic, maybe they should move to a host that specializes in DDoS protections…  ;D ;D

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

                                          ^ exactly… Why anyone would even want to point their dns to this is beyond me....

                                          1 Reply Last reply Reply Quote 0
                                          • P
                                            promo last edited by

                                            @johnpoz:

                                            ^ exactly… Why anyone would even want to point their dns to this is beyond me....

                                            Do you use QUAD9?

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

                                              No I resolve with dnssec.. Not going to forward my queries to any specific dns thank you very much.  I will just run my own resolver as it should be..

                                              1 Reply Last reply Reply Quote 0
                                              • R
                                                Ralphys last edited by

                                                I use Quad9 and I find value in their service. I have had 2 issues with them and contacting Quad9 has been to my surprise very easy; they are very professional and responsive. They have addressed the issues rather quickly and have been kind enough to follow up with me.

                                                1 Reply Last reply Reply Quote 0
                                                • R
                                                  rdlugosz last edited by

                                                  Quad9 seems to provide a nice value-add by attaching block lists to their results. Likely a setup that you could easily recreate with pfSense, although something to be said for the ease of pointing to them & getting it for free. Also I'd assume they have access to more exhaustive lists than what we could maintain privately.

                                                  I'm actually in touch with their support right now and agree that they're pretty responsive. There's one or two hops between me and their service that drop lots of packets… Results in occasional long delays for a DNS lookup (at least, that's my theory as to why I see this). I sent them a couple example reports from mtr; maybe they'll have better luck contacting whomever is responsible for those systems than I would.

                                                  1 Reply Last reply Reply Quote 0
                                                  • ivor
                                                    ivor last edited by

                                                    @promo:

                                                    I was reading a post on one of the forums and some there seems to think this is a pfsense issue with the Cloudflare certificate.

                                                    I'm not sure what you read, but Cloudflare person said clearly:

                                                    Thanks for the report! This is going to be fixed in the next upgrade that's being rolled out.
                                                    There was an interop issue in the last upgrade with Unbound as it sends the frame size and the actual DNS message in two separate packets instead of both at once.

                                                    From: https://community.cloudflare.com/t/1-1-1-1-was-working-but-not-anymore/15136/4

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

                                                      Yeah shepherds are normally very attentive to their sheep, as they gather their flock ;) heheheeh

                                                      1 Reply Last reply Reply Quote 0
                                                      • P
                                                        promo last edited by

                                                        @ivor:

                                                        @promo:

                                                        I was reading a post on one of the forums and some there seems to think this is a pfsense issue with the Cloudflare certificate.

                                                        I'm not sure what you read, but Cloudflare person said clearly:

                                                        Thanks for the report! This is going to be fixed in the next upgrade that's being rolled out.
                                                        There was an interop issue in the last upgrade with Unbound as it sends the frame size and the actual DNS message in two separate packets instead of both at once.

                                                        From: https://community.cloudflare.com/t/1-1-1-1-was-working-but-not-anymore/15136/4

                                                        I stand corrected! My apologies!

                                                        1 Reply Last reply Reply Quote 0
                                                        • P
                                                          promo last edited by

                                                          @johnpoz:

                                                          No I resolve with dnssec.. Not going to forward my queries to any specific dns thank you very much.  I will just run my own resolver as it should be..

                                                          So when your resolver does not know a host's IP because it is not cached, where does it forward the query? No need to get upset, I am just asking a question!

                                                          1 Reply Last reply Reply Quote 0
                                                          • C
                                                            CiscoX last edited by

                                                            @ivor:

                                                            We have updated the blog post with Quad9 settings https://www.netgate.com/blog/dns-over-tls-with-pfsense.html

                                                            Hi,

                                                            First of all, thanks for the Tips&Tricks guide :)

                                                            DNS over TLS doesn't work for me. I run into this issue and lost Internet to.

                                                            Apr 5 18:29:19    unbound    7412:0    info: start of service (unbound 1.6..
                                                            Apr 5 18:29:19    unbound    7412:0    error: duplicate forward zone . ignored.
                                                            Apr 5 18:29:19    unbound    7412:3    error: duplicate forward zone . ignored.
                                                            Apr 5 18:29:19    unbound    7412:2    error: duplicate forward zone . ignored.
                                                            Apr 5 18:29:19    unbound    7412:1    error: duplicate forward zone . ignored.
                                                            Apr 5 18:29:19    unbound    7412:0    notice: init module 1: iterator
                                                            Apr 5 18:29:19    unbound    7412:0    notice: init module 0: validator
                                                            Apr 5 18:29:19    unbound    7412:0    notice: Restart of unbound 1.6.8.
                                                            Apr 5 18:29:19    unbound    7412:0    info: server stats for thread 3: requestlist max 0 avg 0 exceeded 0 jostled 0
                                                            Apr 5 18:29:19    unbound    7412:0    info: server stats for thread 3: 0 queries, 0 answers from cache, 0 recursions, 0 prefetch, 0 rejected by ip ratelimiting
                                                            Apr 5 18:29:19    unbound    7412:0    info: server stats for thread 2: requestlist max 0 avg 0 exceeded 0 jostled 0
                                                            Apr 5 18:29:19    unbound    7412:0    info: server stats for thread 2: 0 queries, 0 answers from cache, 0 recursions, 0 prefetch, 0 rejected by ip ratelimiting
                                                            Apr 5 18:29:19    unbound    7412:0    info: server stats for thread 1: requestlist max 0 avg 0 exceeded 0 jostled 0
                                                            Apr 5 18:29:19    unbound    7412:0    info: server stats for thread 1: 0 queries, 0 answers from cache, 0 recursions, 0 prefetch, 0 rejected by ip ratelimiting
                                                            Apr 5 18:29:19    unbound    7412:0    info: server stats for thread 0: requestlist max 0 avg 0 exceeded 0 jostled 0
                                                            Apr 5 18:29:19    unbound    7412:0    info: server stats for thread 0: 0 queries, 0 answers from cache, 0 recursions, 0 prefetch, 0 rejected by ip ratelimiting
                                                            Apr 5 18:29:19    unbound    7412:0    info: service stopped (unbound 1.6..
                                                            Apr 5 18:29:19    unbound    7412:0    info: start of service (unbound 1.6..
                                                            
                                                            1 Reply Last reply Reply Quote 0
                                                            • KOM
                                                              KOM last edited by

                                                              So when your resolver does not know a host's IP because it is not cached, where does it forward the query?

                                                              The root servers, of course.

                                                              https://en.wikipedia.org/wiki/Root_name_server

                                                              1 Reply Last reply Reply Quote 0
                                                              • R
                                                                Ralphys last edited by

                                                                So when your resolver does not know a host's IP because it is not cached, where does it forward the query? No need to get upset, I am just asking a question!

                                                                promo, just ignore the passive-aggressive tone. Don't worry about it :)

                                                                “Your greatness is measured by your kindness; your education and intellect by your modesty; your ignorance is betrayed by your suspicions and prejudices, and your real caliber is measured by the consideration and tolerance you have for others.” ~William J.H. Boetcker

                                                                Unbound is a DNS resolver, which means that it doesn't necessarily need to forward queries to another DNS resolver/forwarder such as Quad9, Google, Cloudflare, OpenDNS, etc. Instead it can query "root hints" servers by itself without any of the previously mentioned providers in between. There is a trade in that process, root hints can be really slow responding to queries. With that in mind, different providers (such as the ones above mentioned and others) put DNS servers closer to you to speed things up. Since their resources is so vast and their services is generally used by millions of users, chances are that your query will most likely hit their cache instead of having to go back to "root hints" to pull a record; which dramatically increases DNS resolution speed, translated into faster browsing experience and so on.

                                                                Implementing DNSSEC and querying "root hints" reduces the chances of getting poisoned or bogus responses. Yet it does not make your DNS immune to eavesdropping. Anyone (specially your ISP) "listening" on the network for DNS queries can see which sites you're visiting by looking at your DNS queries (DNS isn't encrypted by default), for example.

                                                                Using services such as Cloudflare, Quad9 and others, may in fact help you escape the eavesdropping by implementing DNS over TLS or HTTPS on top of speeding up your DNS resolution. Yet your DNS queries are at the mercy of the upstream provider. The trade in this case is basically a matter of "trust" in the provider you choose to forward your queries to.

                                                                That's the watered down version  :)

                                                                1 Reply Last reply Reply Quote 0
                                                                • P
                                                                  promo last edited by

                                                                  @rafaelr:

                                                                  So when your resolver does not know a host's IP because it is not cached, where does it forward the query? No need to get upset, I am just asking a question!

                                                                  promo, just ignore the passive-aggressive tone. Don't worry about it :)

                                                                  “Your greatness is measured by your kindness; your education and intellect by your modesty; your ignorance is betrayed by your suspicions and prejudices, and your real caliber is measured by the consideration and tolerance you have for others.” ~William J.H. Boetcker

                                                                  Unbound is a DNS resolver, which means that it doesn't necessarily need to forward queries to another DNS resolver/forwarder such as Quad9, Google, Cloudflare, OpenDNS, etc. Instead it can query "root hints" servers by itself without any of the previously mentioned providers in between. There is a trade in that process, root hints can be really slow responding to queries. With that in mind, different providers (such as the ones above mentioned and others) put DNS servers closer to you to speed things up. Since their resources is so vast and their services is generally used by millions of users, chances are that your query will most likely hit their cache instead of having to go back to "root hints" to pull a record; which dramatically increases DNS resolution speed, translated into faster browsing experience and so on.

                                                                  Implementing DNSSEC and querying "root hints" reduces the chances of getting poisoned or bogus responses. Yet it does not make your DNS immune to eavesdropping. Anyone (specially your ISP) "listening" on the network for DNS queries can see which sites you're visiting by looking at your DNS queries (DNS isn't encrypted by default), for example.

                                                                  Using services such as Cloudflare, Quad9 and others, may in fact help you escape the eavesdropping by implementing DNS over TLS or HTTPS on top of speeding up your DNS resolution. Yet your DNS queries are at the mercy of the upstream provider. The trade in this case is basically a matter of "trust" in the provider you choose to forward your queries to.

                                                                  That's the watered down version  :)

                                                                  Exactly what I was leading up to! ;)

                                                                  1 Reply Last reply Reply Quote 0
                                                                  • M
                                                                    mirkwoody last edited by

                                                                    Just want to say that I niether could get Cloudflare to work when DNS over tls, but Quad9 works.

                                                                    Haven't looked into logs yet, just that I seemed able to ping sites from within Pfsense, but not from my desktop and other.

                                                                    1 Reply Last reply Reply Quote 0
                                                                    • C
                                                                      CiscoX last edited by

                                                                      @mirkwoody:

                                                                      Just want to say that I niether could get Cloudflare to work when DNS over tls, but Quad9 works.

                                                                      Haven't looked into logs yet, just that I seemed able to ping sites from within Pfsense, but not from my desktop and other.

                                                                      Same here.

                                                                      1 Reply Last reply Reply Quote 0
                                                                      • C
                                                                        CRKus last edited by

                                                                        @ivor:

                                                                        @promo:

                                                                        I was reading a post on one of the forums and some there seems to think this is a pfsense issue with the Cloudflare certificate.

                                                                        I'm not sure what you read, but Cloudflare person said clearly:

                                                                        Thanks for the report! This is going to be fixed in the next upgrade that's being rolled out.
                                                                        There was an interop issue in the last upgrade with Unbound as it sends the frame size and the actual DNS message in two separate packets instead of both at once.

                                                                        From: https://community.cloudflare.com/t/1-1-1-1-was-working-but-not-anymore/15136/4

                                                                        Just to circle back, the above CloudFlare community post indicates a fix was pushed on the CF side to resolve the problem sometime on the 5th.

                                                                        Indeed, as of today, I switched back to the CloudFlare resolvers on 853, and appear to be up and running now.

                                                                        1 Reply Last reply Reply Quote 0
                                                                        • G
                                                                          gsmornot last edited by

                                                                          Since both provide a good service I left both in the config. Until I run into an issue it provides me with a backup. If you didn't know, the first line after server: is due to pfBlockerng.

                                                                          server:
                                                                          include: /var/unbound/pfb_dnsbl.*conf
                                                                          forward-zone:
                                                                          name: "."
                                                                          forward-ssl-upstream: yes
                                                                          forward-addr: 1.1.1.1@853
                                                                          forward-addr: 1.0.0.1@853
                                                                          forward-addr: 9.9.9.9@853
                                                                          forward-addr: 149.112.112.112@853
                                                                          forward-addr: 2606:4700:4700::1111@853
                                                                          forward-addr: 2606:4700:4700::1001@853
                                                                          forward-addr: 2620:fe::fe

                                                                          1 Reply Last reply Reply Quote 0
                                                                          • chudak
                                                                            chudak @promo last edited by

                                                                            @promo

                                                                            Wonder this issue was ever resolved for 1.1.1.1

                                                                            Thx

                                                                            B 1 Reply Last reply Reply Quote 0
                                                                            • B
                                                                              bldnightowl @chudak last edited by

                                                                              I'm trying to use DNS over TLS using Cloudflare's servers. DNS appears to work -- but Cloudflare's page indicates it isn't. 0_1550567261763_Screen Shot 2019-02-18 at 8.58.02 PM.png

                                                                              Thoughts?

                                                                              chudak 1 Reply Last reply Reply Quote 0
                                                                              • chudak
                                                                                chudak @bldnightowl last edited by

                                                                                @bldnightowl

                                                                                What's URL to this test page ?

                                                                                1 Reply Last reply Reply Quote 0
                                                                                • B
                                                                                  bldnightowl last edited by

                                                                                  "page" is a link in my post above.

                                                                                  chudak 2 Replies Last reply Reply Quote 0
                                                                                  • chudak
                                                                                    chudak @bldnightowl last edited by

                                                                                    @bldnightowl

                                                                                    It was blocked by pfbNG for some reason

                                                                                    I see that page work for me https://snag.gy/oNvPsI.jpg

                                                                                    B 1 Reply Last reply Reply Quote 0
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