I need HELP on DNS RESOLVER!
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@johnpoz
I typed your commands one by one and these are my outputs. And all outs from pfsense boxes comand promptdig @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 reacheddig @ns1.edgecastcdn.net edgecastcdn.net NS
dig: couldn't get address for 'ns1.edgecastcdn.net': not founddig 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 reachedthese are my results. I dont know but I cannot solve that damn domain.
And little info my setup on vmware esxi with pppoe -
@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 -
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. -
looks to me like you can not talk to roots..
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@johnpoz I can talk with blabla.root-servers.net. I try 5 or 6 of them with random choose.
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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 msMine 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 -
@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: 825Output 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.
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one question? are you using carp? if so, use the carp vips on dns resolver. for outbound interface you only need localhost.
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@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.
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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..
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@johnpoz
here they are I block all other dns servers because of I dont want to clients pass pfblocker with other dns servers.
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@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.
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@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 ~]# -
@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).
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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.
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@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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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 msIt 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.
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@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 reachedafter 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 -
@emirefek said in I need HELP on DNS RESOLVER!:
;; connection timed out; no servers could be reached
You are NOT talking to roots... When you ask for
dig cs71.wac.edgecastcdn.net +trace +nodnssec
Sniff on your WAN when you do that command... What do you see? You should be able to watch the whole process where does it fail?
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@johnpoz Am I need to sniff from unbound logs ?
