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    I need HELP on DNS RESOLVER!

    DHCP and DNS
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    • johnpozJ
      johnpoz LAYER 8 Global Moderator
      last edited by

      They do have a bit of a problem to be honest with their setup... So the roots for .net only show 2 NS for that domain

      dig @e.gtld-servers.net edgecastcdn.net NS                     

; <<>> DiG 9.9.5-3ubuntu0.17-Ubuntu <<>> @e.gtld-servers.net edgecastcdn.net NS
; (2 servers found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 16422
;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 2, ADDITIONAL: 5
;; WARNING: recursion requested but not available

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;edgecastcdn.net.               IN      NS

;; AUTHORITY SECTION:
edgecastcdn.net.        172800  IN      NS      ns1.edgecastcdn.net.
edgecastcdn.net.        172800  IN      NS      ns2.edgecastcdn.net.

;; ADDITIONAL SECTION:
ns1.edgecastcdn.net.    172800  IN      AAAA    2606:2800:1::5
ns1.edgecastcdn.net.    172800  IN      A       72.21.80.5
ns2.edgecastcdn.net.    172800  IN      AAAA    2606:2800:1::6
ns2.edgecastcdn.net.    172800  IN      A       72.21.80.6

;; Query time: 17 msec
;; SERVER: 2001:502:1ca1::30#53(2001:502:1ca1::30)
;; WHEN: Tue Sep 11 12:39:14 CDT 2018
;; MSG SIZE  rcvd: 168

      But if you ask the SOA for that domain for its NS.. you get back 4 of them.

      dig @ns1.edgecastcdn.net edgecastcdn.net NS

; <<>> DiG 9.9.5-3ubuntu0.17-Ubuntu <<>> @ns1.edgecastcdn.net edgecastcdn.net NS
; (2 servers found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 22695
;; flags: qr aa rd; QUERY: 1, ANSWER: 4, AUTHORITY: 0, ADDITIONAL: 9
;; WARNING: recursion requested but not available

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;edgecastcdn.net.               IN      NS

;; ANSWER SECTION:
edgecastcdn.net.        3600    IN      NS      ns1.edgecastcdn.net.
edgecastcdn.net.        3600    IN      NS      ns2.edgecastcdn.net.
edgecastcdn.net.        3600    IN      NS      ns3.edgecastcdn.net.
edgecastcdn.net.        3600    IN      NS      ns4.edgecastcdn.net.

;; ADDITIONAL SECTION:
ns1.edgecastcdn.net.    172800  IN      AAAA    2606:2800:1::5
ns2.edgecastcdn.net.    172800  IN      AAAA    2606:2800:1::6
ns3.edgecastcdn.net.    3600    IN      AAAA    2606:2800:e::5
ns4.edgecastcdn.net.    3600    IN      AAAA    2606:2800:e::6
ns1.edgecastcdn.net.    172800  IN      A       72.21.80.5
ns2.edgecastcdn.net.    172800  IN      A       72.21.80.6
ns3.edgecastcdn.net.    3600    IN      A       192.229.254.5
ns4.edgecastcdn.net.    3600    IN      A       192.229.254.6

;; Query time: 10 msec
;; SERVER: 2606:2800:1::5#53(2606:2800:1::5)
;; WHEN: Tue Sep 11 12:41:52 CDT 2018
;; MSG SIZE  rcvd: 292

      This really shoudn't stop you from resolving - but it does reflect a lack of proper dns control..

      Did you run the dig +trace command pfsense?

      [2.4.3-RELEASE][root@sg4860.local.lan]/: dig cs71.wac.edgecastcdn.net +trace +nodnssec

; <<>> DiG 9.11.2-P1 <<>> cs71.wac.edgecastcdn.net +trace +nodnssec
;; global options: +cmd
.                       485599  IN      NS      f.root-servers.net.
.                       485599  IN      NS      d.root-servers.net.
.                       485599  IN      NS      i.root-servers.net.
.                       485599  IN      NS      g.root-servers.net.
.                       485599  IN      NS      c.root-servers.net.
.                       485599  IN      NS      e.root-servers.net.
.                       485599  IN      NS      l.root-servers.net.
.                       485599  IN      NS      h.root-servers.net.
.                       485599  IN      NS      k.root-servers.net.
.                       485599  IN      NS      j.root-servers.net.
.                       485599  IN      NS      m.root-servers.net.
.                       485599  IN      NS      a.root-servers.net.
.                       485599  IN      NS      b.root-servers.net.
;; Received 239 bytes from 127.0.0.1#53(127.0.0.1) in 0 ms

net.                    172800  IN      NS      a.gtld-servers.net.
net.                    172800  IN      NS      b.gtld-servers.net.
net.                    172800  IN      NS      c.gtld-servers.net.
net.                    172800  IN      NS      d.gtld-servers.net.
net.                    172800  IN      NS      e.gtld-servers.net.
net.                    172800  IN      NS      f.gtld-servers.net.
net.                    172800  IN      NS      g.gtld-servers.net.
net.                    172800  IN      NS      h.gtld-servers.net.
net.                    172800  IN      NS      i.gtld-servers.net.
net.                    172800  IN      NS      j.gtld-servers.net.
net.                    172800  IN      NS      k.gtld-servers.net.
net.                    172800  IN      NS      l.gtld-servers.net.
net.                    172800  IN      NS      m.gtld-servers.net.
;; Received 846 bytes from 2001:500:1::53#53(h.root-servers.net) in 106 ms

edgecastcdn.net.        172800  IN      NS      ns1.edgecastcdn.net.
edgecastcdn.net.        172800  IN      NS      ns2.edgecastcdn.net.
;; Received 177 bytes from 192.5.6.30#53(a.gtld-servers.net) in 39 ms

cs71.wac.edgecastcdn.net. 3600  IN      A       72.21.91.97
;; Received 69 bytes from 72.21.80.5#53(ns1.edgecastcdn.net) in 11 ms

[2.4.3-RELEASE][root@sg4860.local.lan]/:

      This will tell you if pfsense would have a problem with resolving it.. I added the +nodnssec option to make the trace look cleaner - ie not include the dnssec info that roots and .net servers hand out

      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

      1 Reply Last reply Reply Quote 1
      • GertjanG
        Gertjan
        last edited by

        Things didn't get any better this morning : https://zonemaster.iis.se/?resultid=87deb85f04a58f9e

        @emirefek : what about testing google.com *** ? So we can focus on your issues, not the one of the guy with severe DNS problems ?

        *** well, maybe google.com isn't perfect neither. This one is.

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

        1 Reply Last reply Reply Quote 0
        • E
          emirefek
          last edited by

          @johnpoz
          I typed your commands one by one and these are my outputs. And all outs from pfsense boxes comand prompt

          dig @e.gtld-servers.net edgecastcdn.net NS

          ; <<>> DiG 9.11.2-P1 <<>> @e.gtld-servers.net edgecastcdn.net NS
; (2 servers found)
;; global options: +cmd
;; connection timed out; no servers could be reached

          dig @ns1.edgecastcdn.net edgecastcdn.net NS

          dig: couldn't get address for 'ns1.edgecastcdn.net': not found

          dig cs71.wac.edgecastcdn.net +trace +nodnssec

          ; <<>> DiG 9.11.2-P1 <<>> cs71.wac.edgecastcdn.net +trace +nodnssec
;; global options: +cmd
.			24997	IN	NS	m.root-servers.net.
.			24997	IN	NS	g.root-servers.net.
.			24997	IN	NS	a.root-servers.net.
.			24997	IN	NS	j.root-servers.net.
.			24997	IN	NS	l.root-servers.net.
.			24997	IN	NS	d.root-servers.net.
.			24997	IN	NS	k.root-servers.net.
.			24997	IN	NS	b.root-servers.net.
.			24997	IN	NS	i.root-servers.net.
.			24997	IN	NS	h.root-servers.net.
.			24997	IN	NS	c.root-servers.net.
.			24997	IN	NS	f.root-servers.net.
.			24997	IN	NS	e.root-servers.net.
;; Received 811 bytes from 127.0.0.1#53(127.0.0.1) in 0 ms

;; connection timed out; no servers could be reached

          these are my results. I dont know but I cannot solve that damn domain.
          And little info my setup on vmware esxi with pppoe

          1 Reply Last reply Reply Quote 0
          • E
            emirefek
            last edited by

            @Gertjan I can solve this domain mate. This output from pfsense box.

            dig test-domaine.fr

            ; <<>> DiG 9.11.2-P1 <<>> test-domaine.fr
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 38644
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;test-domaine.fr.		IN	A

;; ANSWER SECTION:
test-domaine.fr.	10092	IN	A	5.196.43.182

;; Query time: 0 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Fri Sep 14 12:56:48 +03 2018
;; MSG SIZE  rcvd: 60
            1 Reply Last reply Reply Quote 0
            • GertjanG
              Gertjan
              last edited by

              Logic ☺ I'm the DNS administrator of that domain.

              But your test tells me that your Resolver (DNS) works fine.
              For what it's worth : when you setup pfSense (that is : assign LAN, WAN) and then you set up your WAN interface any device on your LAN should be able to access the net with any troubles.
              Initially : do not touch firewall rules, VLAN's, DNS, nothing.

              Btw : again : you are not responsible for not resolving of sub domains. The fact that something works on this side of the planet doesn't mean it isn't broken on your side.
              Seek contact with the guy that manages ubnt.i.lithium.com - or put in a DNS host over ride.

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

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

                looks to me like you can not talk to roots..

                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

                E 1 Reply Last reply Reply Quote 1
                • E
                  emirefek @johnpoz
                  last edited by

                  @johnpoz I can talk with blabla.root-servers.net. I try 5 or 6 of them with random choose.

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

                    Then why does your trace not get an answer back ??

                    You should of gotten back the next level - the NS for .net when you did your trace..

                    example
                    net. 172800 IN NS k.gtld-servers.net.
                    net. 172800 IN NS l.gtld-servers.net.
                    net. 172800 IN NS m.gtld-servers.net.
                    ;; Received 846 bytes from 2001:500:1::53#53(h.root-servers.net) in 106 ms

                    Mine talked via ipv6 when I did the trace - but ipv4 would do the same thing.. You just stopped at roots..

                    How did you test talking to them - a ping or an actual dns query?

                    example

                    C:\>dig @m.root-servers.net net NS

; <<>> DiG 9.12.2 <<>> @m.root-servers.net net NS
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 23008
;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 13, ADDITIONAL: 27
;; WARNING: recursion requested but not available

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;net.                           IN      NS

;; AUTHORITY SECTION:
net.                    172800  IN      NS      m.gtld-servers.net.
net.                    172800  IN      NS      i.gtld-servers.net.
net.                    172800  IN      NS      a.gtld-servers.net.
net.                    172800  IN      NS      h.gtld-servers.net.
net.                    172800  IN      NS      k.gtld-servers.net.
net.                    172800  IN      NS      b.gtld-servers.net.
net.                    172800  IN      NS      c.gtld-servers.net.
net.                    172800  IN      NS      l.gtld-servers.net.
net.                    172800  IN      NS      g.gtld-servers.net.
net.                    172800  IN      NS      d.gtld-servers.net.
net.                    172800  IN      NS      j.gtld-servers.net.
net.                    172800  IN      NS      f.gtld-servers.net.
net.                    172800  IN      NS      e.gtld-servers.net.

;; ADDITIONAL SECTION:
a.gtld-servers.net.     172800  IN      A       192.5.6.30
b.gtld-servers.net.     172800  IN      A       192.33.14.30
c.gtld-servers.net.     172800  IN      A       192.26.92.30
d.gtld-servers.net.     172800  IN      A       192.31.80.30
e.gtld-servers.net.     172800  IN      A       192.12.94.30
f.gtld-servers.net.     172800  IN      A       192.35.51.30
g.gtld-servers.net.     172800  IN      A       192.42.93.30
h.gtld-servers.net.     172800  IN      A       192.54.112.30
i.gtld-servers.net.     172800  IN      A       192.43.172.30
j.gtld-servers.net.     172800  IN      A       192.48.79.30
k.gtld-servers.net.     172800  IN      A       192.52.178.30
l.gtld-servers.net.     172800  IN      A       192.41.162.30
m.gtld-servers.net.     172800  IN      A       192.55.83.30
a.gtld-servers.net.     172800  IN      AAAA    2001:503:a83e::2:30
b.gtld-servers.net.     172800  IN      AAAA    2001:503:231d::2:30
c.gtld-servers.net.     172800  IN      AAAA    2001:503:83eb::30
d.gtld-servers.net.     172800  IN      AAAA    2001:500:856e::30
e.gtld-servers.net.     172800  IN      AAAA    2001:502:1ca1::30
f.gtld-servers.net.     172800  IN      AAAA    2001:503:d414::30
g.gtld-servers.net.     172800  IN      AAAA    2001:503:eea3::30
h.gtld-servers.net.     172800  IN      AAAA    2001:502:8cc::30
i.gtld-servers.net.     172800  IN      AAAA    2001:503:39c1::30
j.gtld-servers.net.     172800  IN      AAAA    2001:502:7094::30
k.gtld-servers.net.     172800  IN      AAAA    2001:503:d2d::30
l.gtld-servers.net.     172800  IN      AAAA    2001:500:d937::30
m.gtld-servers.net.     172800  IN      AAAA    2001:501:b1f9::30

;; Query time: 77 msec
;; SERVER: 202.12.27.33#53(202.12.27.33)
;; WHEN: Fri Sep 14 08:03:45 Central Daylight Time 2018
;; MSG SIZE  rcvd: 825

                    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

                    1 Reply Last reply Reply Quote 1
                    • E
                      emirefek
                      last edited by emirefek

                      @johnpoz said in I need HELP on DNS RESOLVER!:

                      @m.root-servers.net net NS

                      This output from my pfsense box. But I cannot talk it from my centos server and Im sure my centos dns settings are pointing my pfsense box.

                      dig @m.root-servers.net net NS

                      ; <<>> DiG 9.11.2-P1 <<>> @m.root-servers.net net NS
; (2 servers found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 10472
;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 13, ADDITIONAL: 27
;; WARNING: recursion requested but not available

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;net.				IN	NS

;; AUTHORITY SECTION:
net.			172800	IN	NS	l.gtld-servers.net.
net.			172800	IN	NS	b.gtld-servers.net.
net.			172800	IN	NS	h.gtld-servers.net.
net.			172800	IN	NS	i.gtld-servers.net.
net.			172800	IN	NS	d.gtld-servers.net.
net.			172800	IN	NS	e.gtld-servers.net.
net.			172800	IN	NS	f.gtld-servers.net.
net.			172800	IN	NS	a.gtld-servers.net.
net.			172800	IN	NS	m.gtld-servers.net.
net.			172800	IN	NS	c.gtld-servers.net.
net.			172800	IN	NS	k.gtld-servers.net.
net.			172800	IN	NS	j.gtld-servers.net.
net.			172800	IN	NS	g.gtld-servers.net.

;; ADDITIONAL SECTION:
a.gtld-servers.net.	172800	IN	A	192.5.6.30
b.gtld-servers.net.	172800	IN	A	192.33.14.30
c.gtld-servers.net.	172800	IN	A	192.26.92.30
d.gtld-servers.net.	172800	IN	A	192.31.80.30
e.gtld-servers.net.	172800	IN	A	192.12.94.30
f.gtld-servers.net.	172800	IN	A	192.35.51.30
g.gtld-servers.net.	172800	IN	A	192.42.93.30
h.gtld-servers.net.	172800	IN	A	192.54.112.30
i.gtld-servers.net.	172800	IN	A	192.43.172.30
j.gtld-servers.net.	172800	IN	A	192.48.79.30
k.gtld-servers.net.	172800	IN	A	192.52.178.30
l.gtld-servers.net.	172800	IN	A	192.41.162.30
m.gtld-servers.net.	172800	IN	A	192.55.83.30
a.gtld-servers.net.	172800	IN	AAAA	2001:503:a83e::2:30
b.gtld-servers.net.	172800	IN	AAAA	2001:503:231d::2:30
c.gtld-servers.net.	172800	IN	AAAA	2001:503:83eb::30
d.gtld-servers.net.	172800	IN	AAAA	2001:500:856e::30
e.gtld-servers.net.	172800	IN	AAAA	2001:502:1ca1::30
f.gtld-servers.net.	172800	IN	AAAA	2001:503:d414::30
g.gtld-servers.net.	172800	IN	AAAA	2001:503:eea3::30
h.gtld-servers.net.	172800	IN	AAAA	2001:502:8cc::30
i.gtld-servers.net.	172800	IN	AAAA	2001:503:39c1::30
j.gtld-servers.net.	172800	IN	AAAA	2001:502:7094::30
k.gtld-servers.net.	172800	IN	AAAA	2001:503:d2d::30
l.gtld-servers.net.	172800	IN	AAAA	2001:500:d937::30
m.gtld-servers.net.	172800	IN	AAAA	2001:501:b1f9::30

;; Query time: 84 msec
;; SERVER: 202.12.27.33#53(202.12.27.33)
;; WHEN: Fri Sep 14 16:06:49 +03 2018
;; MSG SIZE  rcvd: 825

                      Output from centos:

                      [root@ekcentos ~]# dig @m.root-servers.net net NS

; <<>> DiG 9.9.4-RedHat-9.9.4-61.el7_5.1 <<>> @m.root-servers.net net NS
; (2 servers found)
;; global options: +cmd
;; connection timed out; no servers could be reached
[root@ekcentos ~]#

                      EDIT:I blocked all other dns servers to LAN side from rules section when I do that centos cannot solve that hostname but when I allow all dns servers to lan side centos can solve this domain too.

                      1 Reply Last reply Reply Quote 0
                      • nodauN
                        nodau
                        last edited by

                        one question? are you using carp? if so, use the carp vips on dns resolver. for outbound interface you only need localhost.

                        Norman

                        virtualized pfSense 2.7.2 HA-Cluster on vsphere 8

                        E 1 Reply Last reply Reply Quote 0
                        • E
                          emirefek @nodau
                          last edited by

                          @bahsig No Im not my setup is very simple. 1 WAN(PPPOE) - and 2 LAN (one of them for WIFIaps)

                          I seeted up my box with that tutorial: https://www.youtube.com/watch?v=RrQrt8r_uYg

                          And my plugins are pfblocker, snort and squid but I didnt configure it yet.

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

                            So your problem has nothing to do with dns it seems like, but more your dns rules?

                            Lets see these rules for your centos box network interface on pfsense..

                            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

                            E 1 Reply Last reply Reply Quote 0
                            • E
                              emirefek @johnpoz
                              last edited by

                              @johnpoz
                              here they are I block all other dns servers because of I dont want to clients pass pfblocker with other dns servers.
                              0_1536932941642_LANrules.PNG

                              1 Reply Last reply Reply Quote 0
                              • GertjanG
                                Gertjan
                                last edited by Gertjan

                                @emirefek said in I need HELP on DNS RESOLVER!:

                                EDIT:I blocked all other dns servers to LAN side from rules section when I do that centos cannot solve that hostname but when I allow all dns servers to lan side centos

                                Your DNS ! ONLY ! to pfSEnse rule is UDP only .... 👎

                                Read this https://serverfault.com/questions/404840/when-do-dns-queries-use-tcp-instead-of-udp and start slapping yourself.

                                Act upon this information (and also activate DNSSEC, it will work this time ^^).

                                edit : https://en.wikipedia.org/wiki/Domain_Name_System#Protocol_transport - see "DNS Protocol transport"

                                edit : tip : Instead of "192.168.1.1" as a destination address, use "LAN Address". This will protect you for the next pitfall : the day you introduce IPv6.

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

                                E 1 Reply Last reply Reply Quote 0
                                • E
                                  emirefek @Gertjan
                                  last edited by emirefek

                                  @gertjan Oh. I change it to TCP/UDP and I can solve it now on centos. And I was enable DNSSEC now and I change To LAN Address on rules section.

                                  But I cannot solve damn edgecastcdn.net anyway.

                                  [root@ekcentos ~]# dig @e.gtld-servers.net edgecastcdn.net NS

; <<>> DiG 9.9.4-RedHat-9.9.4-61.el7_5.1 <<>> @e.gtld-servers.net edgecastcdn.net NS
; (2 servers found)
;; global options: +cmd
;; connection timed out; no servers could be reached
[root@ekcentos ~]# dig @e.gtld-servers.net edgecastcdn.net NS
^C[root@ekcentos ~]# dig @ns1.edgecastcdn.net edgecastcdn.net NS
^C^C^C^Cdig: couldn't get address for 'ns1.edgecastcdn.net': not found
[root@ekcentos ~]#
                                  1 Reply Last reply Reply Quote 0
                                  • GertjanG
                                    Gertjan
                                    last edited by

                                    @emirefek said in I need HELP on DNS RESOLVER!:

                                    ig @ns1.edgecastcdn.net edgecastcdn.net NS

                                    Possible that you test also with another PC with some Microsoft OS on your LAN - and then use the 'dig' of Microsoft : nslookup.
                                    Just to be sure that your Centos does things as they should.

                                    Btw : try also disabling for some time your rule number 3 (the DNS block rule).

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

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

                                      your rules are not going to allow centos to query anything other than 192.168.1.1 for dns - sothat dig on centos would never work with that rule in place.

                                      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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                                        emirefek @Gertjan
                                        last edited by

                                        @gertjan I already disable that rule and mate I cannot resolve this domain on pfsense box too. Its not about rules I think.

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                                        • johnpozJ
                                          johnpoz LAYER 8 Global Moderator
                                          last edited by johnpoz

                                          your trace will show you where you have a problem.. A +trace is exactly what resolver does.. It walks down from roots to the authoritative ns for a domain, then queries an authoritative ns for the domain your looking for for the record you seek..

                                          If you can not resolve thee ns for edgecastcdn.net then no your never going to be able to resolve a record they are authoritative for

                                          Now that you have removed that rule and centos can talk to any dns it wants... Lets see its trace for that record as I posted before.

                                          So how that is resolved

                                          ; <<>> DiG 9.11.2-P1 <<>> cs71.wac.edgecastcdn.net +trace +nodnssec
;; global options: +cmd
.                       47128   IN      NS      a.root-servers.net.
.                       47128   IN      NS      b.root-servers.net.
.                       47128   IN      NS      c.root-servers.net.
.                       47128   IN      NS      d.root-servers.net.
.                       47128   IN      NS      e.root-servers.net.
.                       47128   IN      NS      f.root-servers.net.
.                       47128   IN      NS      g.root-servers.net.
.                       47128   IN      NS      h.root-servers.net.
.                       47128   IN      NS      i.root-servers.net.
.                       47128   IN      NS      j.root-servers.net.
.                       47128   IN      NS      k.root-servers.net.
.                       47128   IN      NS      l.root-servers.net.
.                       47128   IN      NS      m.root-servers.net.
;; Received 239 bytes from 127.0.0.1#53(127.0.0.1) in 0 ms

net.                    172800  IN      NS      a.gtld-servers.net.
net.                    172800  IN      NS      m.gtld-servers.net.
net.                    172800  IN      NS      b.gtld-servers.net.
net.                    172800  IN      NS      c.gtld-servers.net.
net.                    172800  IN      NS      e.gtld-servers.net.
net.                    172800  IN      NS      k.gtld-servers.net.
net.                    172800  IN      NS      i.gtld-servers.net.
net.                    172800  IN      NS      j.gtld-servers.net.
net.                    172800  IN      NS      f.gtld-servers.net.
net.                    172800  IN      NS      h.gtld-servers.net.
net.                    172800  IN      NS      d.gtld-servers.net.
net.                    172800  IN      NS      g.gtld-servers.net.
net.                    172800  IN      NS      l.gtld-servers.net.
;; Received 846 bytes from 192.36.148.17#53(i.root-servers.net) in 35 ms

edgecastcdn.net.        172800  IN      NS      ns1.edgecastcdn.net.
edgecastcdn.net.        172800  IN      NS      ns2.edgecastcdn.net.
;; Received 177 bytes from 192.31.80.30#53(d.gtld-servers.net) in 42 ms

cs71.wac.edgecastcdn.net. 3600  IN      A       72.21.91.97
;; Received 69 bytes from 72.21.80.5#53(ns1.edgecastcdn.net) in 18 ms

                                          It asks roots hey roots who is NS for .net domain, hey .net NS who is authoritative for edgecastcdn.net, hey hey ns1.edgecastcdn.net what is the A record for cs71.wac.edgecastcdn.net.

                                          You can see that happen in the trace - and exactly what IP got asked..

                                          If pfsense can not do that - then you need to figure out why.. You can sniff when you run the command and see exactly what gets asked and what gets returned.. On pfsense wan.. If you send a query and don't get a response then the problem is upstream.. Maybe your ISP dicks with dns queries? Maybe you have a network problem talking to the NSers for edgecastcdn.net? maybe they block your IP, etc. etc.

                                          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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                                          • E
                                            emirefek @johnpoz
                                            last edited by

                                            @johnpoz this is my output from pfsense but in my results I cannot see gtld-servers.net ?

                                            dig cs71.wac.edgecastcdn.net +trace +nodnssec

                                            ; <<>> DiG 9.11.2-P1 <<>> cs71.wac.edgecastcdn.net +trace +nodnssec
;; global options: +cmd
.			518275	IN	NS	j.root-servers.net.
.			518275	IN	NS	k.root-servers.net.
.			518275	IN	NS	l.root-servers.net.
.			518275	IN	NS	a.root-servers.net.
.			518275	IN	NS	i.root-servers.net.
.			518275	IN	NS	g.root-servers.net.
.			518275	IN	NS	h.root-servers.net.
.			518275	IN	NS	c.root-servers.net.
.			518275	IN	NS	m.root-servers.net.
.			518275	IN	NS	b.root-servers.net.
.			518275	IN	NS	f.root-servers.net.
.			518275	IN	NS	d.root-servers.net.
.			518275	IN	NS	e.root-servers.net.
;; Received 239 bytes from 127.0.0.1#53(127.0.0.1) in 0 ms

;; connection timed out; no servers could be reached

                                            after that I try this command but I dont know how dig command work clearly but When ı execute this command I was get these output

                                            dig gtld-servers.net +trace +nodnssec

                                            ; <<>> DiG 9.11.2-P1 <<>> gtld-servers.net +trace +nodnssec
;; global options: +cmd
.			517818	IN	NS	j.root-servers.net.
.			517818	IN	NS	k.root-servers.net.
.			517818	IN	NS	l.root-servers.net.
.			517818	IN	NS	a.root-servers.net.
.			517818	IN	NS	i.root-servers.net.
.			517818	IN	NS	g.root-servers.net.
.			517818	IN	NS	h.root-servers.net.
.			517818	IN	NS	c.root-servers.net.
.			517818	IN	NS	m.root-servers.net.
.			517818	IN	NS	b.root-servers.net.
.			517818	IN	NS	f.root-servers.net.
.			517818	IN	NS	d.root-servers.net.
.			517818	IN	NS	e.root-servers.net.
;; Received 239 bytes from 127.0.0.1#53(127.0.0.1) in 0 ms

net.			172800	IN	NS	a.gtld-servers.net.
net.			172800	IN	NS	b.gtld-servers.net.
net.			172800	IN	NS	c.gtld-servers.net.
net.			172800	IN	NS	d.gtld-servers.net.
net.			172800	IN	NS	e.gtld-servers.net.
net.			172800	IN	NS	f.gtld-servers.net.
net.			172800	IN	NS	g.gtld-servers.net.
net.			172800	IN	NS	h.gtld-servers.net.
net.			172800	IN	NS	i.gtld-servers.net.
net.			172800	IN	NS	j.gtld-servers.net.
net.			172800	IN	NS	k.gtld-servers.net.
net.			172800	IN	NS	l.gtld-servers.net.
net.			172800	IN	NS	m.gtld-servers.net.
;; Received 825 bytes from 198.97.190.53#53(h.root-servers.net) in 133 ms

gtld-servers.net.	172800	IN	NS	av1.nstld.com.
gtld-servers.net.	172800	IN	NS	av2.nstld.com.
gtld-servers.net.	172800	IN	NS	av3.nstld.com.
gtld-servers.net.	172800	IN	NS	av4.nstld.com.
;; Received 302 bytes from 192.43.172.30#53(i.gtld-servers.net) in 203 ms

gtld-servers.net.	86400	IN	SOA	av4.nstld.com. nstld.verisign-grs.com. 2017061500 3600 900 1209600 86400
;; Received 113 bytes from 192.42.178.30#53(av2.nstld.com) in 66 ms
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