Forum: >>> Magnum BBS <<<

DNS error, from a newbee to the real experts..

From Mark Andrews@21:1/5 to Weeltin on Sun Jul 19 11:10:33 2020

Copy: [email protected]

Your problem comes from the fact that BIND 9.14 has DNSSEC validation enabled by default (unless disabled at configure time or in named.conf) and the answers from the grafted on namespace (.home) fail DNSSEC validation as there is not a insecure
delegation for .home to break the DNSSEC chain of trust. You can use validate-except to teach there recursive server to not validate parts of the namespace but it is NOT RECOMMENDED as it doesn’t help validating clients.

e.g.

validate-except { home; };

I would stop trying to use .home as it has not been delegated for home use. Use home.arpa instead which has been reserved for home use and has a insecure delegation to break the DNSSEC chain of trust pointing at servers which only return NXDOMAIN for
names under home.arpa. This is the same delegation model used for the RFC 1918 reverse zone. Note that DS is absent from the list of types at the delegation point in the NSEC record. There was an attempt made to delegate .home this way but it
floundered on ICANN/IETF politics.

e.g.

home.arpa. 172800 IN NS blackhole-1.iana.org. home.arpa. 172800 IN NS blackhole-2.iana.org. home.arpa. 86400 IN NSEC in-addr.arpa. NS RRSIG NSEC home.arpa. 86400 IN RRSIG NSEC 8 2 86400 20200731120000 20200718110000 57156 arpa. lSqLNz1E/6WkAUDAJDnvo9X248B+PAWM34s0S0PJFjPi4YLoE//6zSR6 Dgm0T+2qV2KrgvYbOzHV9Z/lRopFxSEJSSwoHgrUmfofXmIbQiKgQHBi g9dvL8yeJm0cRe6QMuM1q/D/3+AnPv5OQNBhC6+UEA+enO3JtDbvjr/H
XfPPvfDfozacZkHPe+AYpJbmT7qfHv8Gw/BeeNtDex9jMoDbJ2l0BLT1 UTPKE9+Abrh3RawcKBF3BbLNWU6AhIkOLZRADGMjcZg1M/IHUk/rOWXV EMZihg1+5I4GSmaRDN0jTX9g5jr822EZfaZLmCKlcGYMMHVOkMUA7k0r +v/Zrg==

If you are using forward zones (not recommended) set “forward only;” as you don’t want to fallback to querying servers on the global Internet when grafting on namespace. If you do use a forward zone then the servers being forwarded to need to
either a) serve the *entire* namespace under the forward zone, or b) be configured as recursive servers.

zone home.arpa {
type forward;
forward only;
forwarders {192.168.14.20;};
};

I would recommend using secondary zone rather than forward zones for grafting on namespaces, just ensure that the all slave servers are receiving NOTIFY messages (use also-notify) so that they receive changes fast. Fast propagation of changes is needed
in a home environment. Secondary zone also provide a break in the DNSSEC chain of trust as far as the recursive server is concerned. They however do not break the DNSSEC chain of trust for any DNSSEC validating clients of the recursive server.

zone home.arpa {
type secondary;
primaries {192.168.14.20;};
file “home.arpa.db”;
...
};

zone home.arpa {
type primary;
file “home.arpa.db”;
also-notify { address list; };
...
};

Also forget any garbage that recursive servers should not also serve zones. People have take the advice that listed authoritative servers shouldn’t be recursive (which is good advise when serving zones to the public) and inverted it to come up with
bad advice.

Mark

On 18 Jul 2020, at 05:18, Weeltin <[email protected]> wrote:

Hello all,

I’m trying to implement a DNS structure, containing a recursive and authoritative server, but in doing so, I have run into a small problem. I can make DNS queries from a client toward the net, but when I try to do the same toward my internal domain,

I get no result. I have spent days trying to figure out what is going on, but to no avail, I there for hope that someone on this list can point me in the right direction or right out tell what is wrong.

/Weeltin.

-----DIG troubleshoots

[weeltin@c1 ~]$ cat /etc/resolv.conf
# Generated by NetworkManager
nameserver 192.168.14.10

[weeltin@c1 ~]$ dig google.com
; <<>> DiG 9.11.11-RedHat-9.11.11-1.fc31 <<>> google.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 48932
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
; COOKIE: c1bc4a11c40bd755905c8c705f11f5ffe699cc0116ed8ba5 (good)
;; QUESTION SECTION:
;google.com. IN A

;; ANSWER SECTION:
google.com. 300 IN A 216.58.211.142

;; Query time: 179 msec
;; SERVER: 192.168.14.10#53(192.168.14.10)
;; WHEN: Fri Jul 17 15:03:27 EDT 2020
;; MSG SIZE rcvd: 83

[weeltin@c1 ~]$ dig c1.example.home
; <<>> DiG 9.11.11-RedHat-9.11.11-1.fc31 <<>> c1.example.home
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 62602
;; flags: qr rd ra ad; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
; COOKIE: cf8876e3b35138f47040188e5f11f64a91445aa4f8310f5a (good)
;; QUESTION SECTION:
;c1.example.home. IN A

;; AUTHORITY SECTION:
. 10800 IN SOA a.root-servers.net. nstld.verisign-grs.com. 2020071701 1800 900 604800 86400

;; Query time: 263 msec
;; SERVER: 192.168.14.10#53(192.168.14.10)
;; WHEN: Fri Jul 17 15:04:42 EDT 2020
;; MSG SIZE rcvd: 147

[weeltin@c1 ~]$ dig @192.168.14.20 c1.example.home

; <<>> DiG 9.11.11-RedHat-9.11.11-1.fc31 <<>> @192.168.14.20 c1.example.home ; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 20704
;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
;; WARNING: recursion requested but not available

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
; COOKIE: 747289c94876cf349034aec35f11f794a29c6747bb6a694f (good)
;; QUESTION SECTION:
;c1.example.home. IN A

;; ANSWER SECTION:
c1.example.home. 604800 IN A 192.168.14.1

;; Query time: 0 msec
;; SERVER: 192.168.14.20#53(192.168.14.20)
;; WHEN: Fri Jul 17 15:10:12 EDT 2020
;; MSG SIZE rcvd: 88

----- informations and configurations ----

OS: Alpine 3.12

Bind: bind 9.14.12

Ns1: 192.168.14.10 (recursive)

Ns2: 192.168.14.20 (authoritative)

C1: 192.168.14.1 (client)

--- recursive config (NS1)

// recursive named.conf
//

acl trusted {

192.168.14.0/24;

localhost;

};

acl rfc1918 {

10.0.0.0/8;

172.16.0.0/12;

!192.168.14.0/24;

192.168.0.0/16;

};

acl rfc5735 {

0.0.0.0/8;

169.254.0.0/16;

192.0.0.0/24;

192.0.2.0/24;

192.88.99.0/24;

198.18.0.0/15;

198.51.100.0/24;

203.0.113.0/24;

224.0.0.0/4;

};

options {

directory "/var/bind";

listen-on {
127.0.0.1;

192.168.14.10;

};

listen-on-v6 {

none;

};

allow-query {

trusted;

};

//query-source address * port 53;

allow-query-cache {

trusted;

};

blackhole {

rfc1918;

rfc5735;

};

allow-transfer {

none;

};

pid-file "/var/run/named/named.pid";

// Changing this is NOT RECOMMENDED; see the notes above and in

// named.conf.recursive.

allow-recursion {

trusted;

};

recursion yes;

};

zone "." IN {

type hint;

file "root.cache";

};

zone "localhost" IN {

type master;

file "pri/localhost.zone";

allow-update { none; };

notify no;

};

zone "127.in-addr.arpa" IN {

type master;

file "pri/127.zone";

allow-update { none; };

notify no;

};

zone "example.home" {

type forward;

forwarders { 192.168.14.20; };

};

--- authoritative config (NS2)
// authoritative named.conf
//
acl trusted {
192.168.14.0/24;
localhost;
};

acl rfc1918 {
10.0.0.0/8;
172.16.0.0/12;
!192.168.14.0/24;
192.168.0.0/16;
};

acl rfc5735 {
0.0.0.0/8;
169.254.0.0/16;
192.0.0.0/24;
192.0.2.0/24;
192.88.99.0/24;
198.18.0.0/15;
198.51.100.0/24;
203.0.113.0/24;
224.0.0.0/4;
};

options {
directory "/var/bind";

// Configure the IPs to listen on here.
listen-on {
127.0.0.1;
192.168.14.20;
};
listen-on-v6 {
none;
};

allow-query {
trusted;
};

//query-source address * port 53;

allow-query-cache {
trusted;
};

blackhole {
rfc5735;
rfc1918;
};

allow-transfer {
none;
};

// Cryptographic authentication of DNS information
// ENABLE LATER
//dnssec-enable yes;
//dnssec-validation yes;

pid-file "/var/run/named/named.pid";

// Changing this is NOT RECOMMENDED for a authoritative nameserver
allow-recursion { none; };
recursion no;
};

zone "example.home" {
type master;
file "/etc/bind/db.example.home.zone";
};

zone "14.168.192.in-addr.arpa" {
type master;
file "/etc/bind/db.14.168.192.zone";
};

; ZONE file for example.home.
;
$TTL 604800
@ IN SOA ns2.example.home. hostmaster.example.home. (
2 ; Serial
604800 ; Refresh 1week
86400 ; Retry
2419200 ; Expire 28days
604800 ; Negative Cache TTL
)
;; name servers (NS)
;; only authoritative servers
@ IN NS ns2.example.home.
ns2 IN A 192.168.14.20
;; hosts (A)
ns1 IN A 192.168.14.10
c1 IN A 192.168.14.1

;; alias (CNAME)
client IN CNAME c1

; ZONE file for 14.168.192.in-addr.arpa.
;
$TTL 604800
@ IN SOA ns2.example.home. hostmaster.example.home. (
1 ; Serial
604800 ; Refresh 1week
86400 ; Retry
2419200 ; Expire 28days
604800 ; Negative Cache TTL
)
;; name servers (NS)
;; only authoritative servers
@ IN NS ns2.example.home.
20 IN PTR ns2.example.home.
;; pointer records (PTR)
1 IN PTR c1.example.home.
10 IN PTR ns1.example.home.

_______________________________________________
Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list

ISC funds the development of this software with paid support subscriptions. Contact us at https://www.isc.org/contact/ for more information.

bind-users mailing list
[email protected]
https://lists.isc.org/mailman/listinfo/bind-users

--
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742 INTERNET: [email protected]

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)

From Weeltin@21:1/5 to Josh Kuo on Mon Jul 20 17:47:05 2020

Copy: [email protected]

Hi Josh,

Thanks for your answer, it made me go trough all the config again, just to
make sure that it wasnt pointing to the authoritative server anywhere but
in the configuration of the recursive server

I saw that "“recursion requested but not available" when i send the query against the authoritative. Kind a expected that, since it aint allowed to
do recursion.

as requested i made the dig on the the authoritative server i get the
correct answer, so i expect it has loaded the zonefiles correctly.

ns2:/home/weeltin# dig @127.0.0.01 example.home

; <<>> DiG 9.14.12 <<>> @127.0.0.01 example.home
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 45487
;; flags: qr aa rd; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1
;; WARNING: recursion requested but not available

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
; COOKIE: b9129ece5d9fbc3e6f01a2215f15a461388d4af048be37fa (good)
;; QUESTION SECTION:
;example.home. IN A

;; AUTHORITY SECTION:
example.home. 604800 IN SOA ns2.example.home. hostmaster.example.home. 2
604800 86400 2419200 604800

;; Query time: 0 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Mon Jul 20 14:04:17 UTC 2020
;; MSG SIZE rcvd: 120

just to be sure, i rand the dig command again on my client

[weeltin@c1 ~]$ dig c1.example.home

; <<>> DiG 9.11.11-RedHat-9.11.11-1.fc31 <<>> c1.example.home
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 1787
;; flags: qr rd ra ad; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
; COOKIE: 862cc48a975a32a324cd14e65f15ba5e3f2c972d1f753586 (good)
;; QUESTION SECTION:
;c1.example.home. IN A

;; AUTHORITY SECTION:
. 10800 IN SOA a.root-servers.net. nstld.verisign-grs.com. 2020072000 1800
900 604800 86400

;; Query time: 1043 msec
;; SERVER: 192.168.14.10#53(192.168.14.10)
;; WHEN: Mon Jul 20 11:38:06 EDT 2020
;; MSG SIZE rcvd: 147

Log output from NS1 (recursive)
<truncate>
Jul 20 15:38:05 ns1 daemon.info named[4022]: validating example.home/SOA:
got insecure response; parent indicates it should be secure
Jul 20 15:38:05 ns1 daemon.info named[4022]: no valid RRSIG resolving 'c1.example.home/DS/IN': 192.168.14.20#53
Jul 20 15:38:06 ns1 daemon.info named[4022]: insecurity proof failed
resolving 'c1.example.home/A/IN': 192.168.14.20#53
</truncate>

and there is no log entries on the authoritative server

/Weeltin

On Sun, Jul 19, 2020 at 6:05 AM Josh Kuo <[email protected]> wrote:

When querying your internal domain, I see the query actually ends with “recursion requested but not available”, it looks like you are querying directly against your auth server, so I would check the setting to ensure
the zone file is actually loaded correctly.

What Mark answered is assuming you are querying the recursive which then returned SERVFAIL due to DNSSEC validation, but I do not see that in the information you provided.

Can you run dig on the auth server itself, dig @ 127.0.0.1 for
example.home, and see what it returns?

<div dir="ltr"><div dir="ltr">Hi Josh,<br><br>Thanks for your answer, it made me go trough all the config again, just to make sure that it wasnt pointing to the authoritative server anywhere but in the configuration of the recursive server<br><br>I saw
that "“recursion requested but not available" when i send the query against the authoritative. Kind a expected that, since it aint allowed to do recursion.<br><br>as requested i made the dig on the the authoritative server i get the correct
answer, so i expect it has loaded the zonefiles correctly. <br><br>ns2:/home/weeltin# dig @<a href="http://127.0.0.01">127.0.0.01</a> example.home<br><br>; <<>> DiG 9.14.12 <<>> @<a href="http://127.0.0.01">127.0.0.01</a> example.
home<br>; (1 server found)<br>;; global options: +cmd<br>;; Got answer:<br>;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 45487<br>;; flags: qr aa rd; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1<br>;; WARNING: recursion requested
but not available<br><br>;; OPT PSEUDOSECTION:<br>; EDNS: version: 0, flags:; udp: 4096<br>; COOKIE: b9129ece5d9fbc3e6f01a2215f15a461388d4af048be37fa (good)<br>;; QUESTION SECTION:<br>;example.home. IN A<br><br>;; AUTHORITY SECTION:<br>example.home.
604800 IN SOA ns2.example.home. hostmaster.example.home. 2 604800 86400 2419200 604800<br><br>;; Query time: 0 msec<br>;; SERVER: 127.0.0.1#53(127.0.0.1)<br>;; WHEN: Mon Jul 20 14:04:17 UTC 2020<br>;; MSG SIZE rcvd: 120<br><br><br>just to be sure, i
rand the dig command again on my client<br><br>[weeltin@c1 ~]$ dig c1.example.home<br><br>; <<>> DiG 9.11.11-RedHat-9.11.11-1.fc31 <<>> c1.example.home<br>;; global options: +cmd<br>;; Got answer:<br>;; ->>HEADER<<-
opcode: QUERY, status: NXDOMAIN, id: 1787<br>;; flags: qr rd ra ad; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1<br><br>;; OPT PSEUDOSECTION:<br>; EDNS: version: 0, flags:; udp: 4096<br>; COOKIE: 862cc48a975a32a324cd14e65f15ba5e3f2c972d1f753586 (good)
<br>;; QUESTION SECTION:<br>;c1.example.home. IN A<br><br>;; AUTHORITY SECTION:<br>. 10800 IN SOA <a href="http://a.root-servers.net">a.root-servers.net</a>. <a href="http://nstld.verisign-grs.com">nstld.verisign-grs.com</a>. 2020072000 1800 900
604800 86400<br><br>;; Query time: 1043 msec<br>;; SERVER: 192.168.14.10#53(192.168.14.10)<br>;; WHEN: Mon Jul 20 11:38:06 EDT 2020<br>;; MSG SIZE rcvd: 147<br><br><br>Log output from NS1 (recursive)<br><truncate><br>Jul 20 15:38:05 ns1 <a href="
http://daemon.info">daemon.info</a> named[4022]: validating example.home/SOA: got insecure response; parent indicates it should be secure<br>Jul 20 15:38:05 ns1 <a href="http://daemon.info">daemon.info</a> named[4022]: no valid RRSIG resolving 'c1.
example.home/DS/IN': 192.168.14.20#53<br>Jul 20 15:38:06 ns1 <a href="http://daemon.info">daemon.info</a> named[4022]: insecurity proof failed resolving 'c1.example.home/A/IN': 192.168.14.20#53<br></truncate><br><br>and there is no log
entries on the authoritative server</div><div dir="ltr"><br></div><div>/Weeltin<br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, Jul 19, 2020 at 6:05 AM Josh Kuo <<a href="mailto:[email protected]">[email protected]</a>
> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div><div dir="auto">When querying your internal domain, I see the query actually ends with “recursion
requested but not available”, it looks like you are querying directly against your auth server, so I would check the setting to ensure the zone file is actually loaded correctly.</div><div dir="auto"><br></div><div dir="auto">What Mark answered is
assuming you are querying the recursive which then returned SERVFAIL due to DNSSEC validation, but I do not see that in the information you provided. </div><div dir="auto"><br></div><div dir="auto">Can you run dig on the auth server itself, dig @ 127.0.
0.1 for example.home, and see what it returns?</div></div><div><br><div class="gmail_quote"><br></div></div>
</blockquote></div></div>

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)

From Josh Kuo@21:1/5 to Weeltin on Tue Jul 21 23:39:41 2020

Copy: [email protected] (ML BIND Users)

From what you posted, it appears when you query the recursive server NS1 (192.168.14.10), it returns no error, it gives back NXDOMAIN with the AD

flag. That would indicate DNSSEC worked. That does not match the log
messages you posted, that would indicate there's a DNSSEC validation error,
and you should have received SERVFAIL.

On Mon, Jul 20, 2020 at 11:47 PM Weeltin <[email protected]> wrote:

Hi Josh,

Thanks for your answer, it made me go trough all the config again, just to make sure that it wasnt pointing to the authoritative server anywhere but
in the configuration of the recursive server

I saw that "“recursion requested but not available" when i send the query against the authoritative. Kind a expected that, since it aint allowed to
do recursion.

as requested i made the dig on the the authoritative server i get the
correct answer, so i expect it has loaded the zonefiles correctly.

ns2:/home/weeltin# dig @127.0.0.01 example.home

; <<>> DiG 9.14.12 <<>> @127.0.0.01 example.home
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 45487
;; flags: qr aa rd; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1
;; WARNING: recursion requested but not available

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
; COOKIE: b9129ece5d9fbc3e6f01a2215f15a461388d4af048be37fa (good)
;; QUESTION SECTION:
;example.home. IN A

;; AUTHORITY SECTION:
example.home. 604800 IN SOA ns2.example.home. hostmaster.example.home. 2 604800 86400 2419200 604800

;; Query time: 0 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Mon Jul 20 14:04:17 UTC 2020
;; MSG SIZE rcvd: 120

just to be sure, i rand the dig command again on my client

[weeltin@c1 ~]$ dig c1.example.home

; <<>> DiG 9.11.11-RedHat-9.11.11-1.fc31 <<>> c1.example.home
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 1787
;; flags: qr rd ra ad; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
; COOKIE: 862cc48a975a32a324cd14e65f15ba5e3f2c972d1f753586 (good)
;; QUESTION SECTION:
;c1.example.home. IN A

;; AUTHORITY SECTION:
. 10800 IN SOA a.root-servers.net. nstld.verisign-grs.com. 2020072000
1800 900 604800 86400

;; Query time: 1043 msec
;; SERVER: 192.168.14.10#53(192.168.14.10)
;; WHEN: Mon Jul 20 11:38:06 EDT 2020
;; MSG SIZE rcvd: 147

Log output from NS1 (recursive)
<truncate>
Jul 20 15:38:05 ns1 daemon.info named[4022]: validating
example.home/SOA: got insecure response; parent indicates it should be
secure
Jul 20 15:38:05 ns1 daemon.info named[4022]: no valid RRSIG resolving 'c1.example.home/DS/IN': 192.168.14.20#53
Jul 20 15:38:06 ns1 daemon.info named[4022]: insecurity proof failed resolving 'c1.example.home/A/IN': 192.168.14.20#53
</truncate>

and there is no log entries on the authoritative server

/Weeltin

On Sun, Jul 19, 2020 at 6:05 AM Josh Kuo <[email protected]> wrote:

When querying your internal domain, I see the query actually ends with
“recursion requested but not available”, it looks like you are querying >> directly against your auth server, so I would check the setting to ensure
the zone file is actually loaded correctly.

What Mark answered is assuming you are querying the recursive which then
returned SERVFAIL due to DNSSEC validation, but I do not see that in the
information you provided.

Can you run dig on the auth server itself, dig @ 127.0.0.1 for
example.home, and see what it returns?

<div dir="ltr">From what you posted, it appears when you query the recursive server NS1 (192.168.14.10), it returns no error, it gives back NXDOMAIN with the AD flag. That would indicate DNSSEC worked. That does not match the log messages you posted,
that would indicate there's a DNSSEC validation error, and you should have received SERVFAIL. </div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Jul 20, 2020 at 11:47 PM Weeltin <<a href="mailto:[email protected]">
[email protected]</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div dir="ltr">Hi Josh,<br><br>Thanks for your answer, it made me go trough
all the config again, just to make sure that it wasnt pointing to the authoritative server anywhere but in the configuration of the recursive server<br><br>I saw that "“recursion requested but not available" when i send the query against the
authoritative. Kind a expected that, since it aint allowed to do recursion.<br><br>as requested i made the dig on the the authoritative server i get the correct answer, so i expect it has loaded the zonefiles correctly. <br><br>ns2:/home/weeltin# dig @<a
href="http://127.0.0.01" target="_blank">127.0.0.01</a> example.home<br><br>; <<>> DiG 9.14.12 <<>> @<a href="http://127.0.0.01" target="_blank">127.0.0.01</a> example.home<br>; (1 server found)<br>;; global options: +cmd<br>;;
Got answer:<br>;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 45487<br>;; flags: qr aa rd; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1<br>;; WARNING: recursion requested but not available<br><br>;; OPT PSEUDOSECTION:<br>; EDNS:
version: 0, flags:; udp: 4096<br>; COOKIE: b9129ece5d9fbc3e6f01a2215f15a461388d4af048be37fa (good)<br>;; QUESTION SECTION:<br>;example.home. IN A<br><br>;; AUTHORITY SECTION:<br>example.home. 604800 IN SOA ns2.example.home. hostmaster.example.home. 2
604800 86400 2419200 604800<br><br>;; Query time: 0 msec<br>;; SERVER: 127.0.0.1#53(127.0.0.1)<br>;; WHEN: Mon Jul 20 14:04:17 UTC 2020<br>;; MSG SIZE rcvd: 120<br><br><br>just to be sure, i rand the dig command again on my client<br><br>[weeltin@c1 ~]$
dig c1.example.home<br><br>; <<>> DiG 9.11.11-RedHat-9.11.11-1.fc31 <<>> c1.example.home<br>;; global options: +cmd<br>;; Got answer:<br>;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 1787<br>;; flags: qr rd ra
ad; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1<br><br>;; OPT PSEUDOSECTION:<br>; EDNS: version: 0, flags:; udp: 4096<br>; COOKIE: 862cc48a975a32a324cd14e65f15ba5e3f2c972d1f753586 (good)<br>;; QUESTION SECTION:<br>;c1.example.home. IN A<br><br>;;
AUTHORITY SECTION:<br>. 10800 IN SOA <a href="http://a.root-servers.net" target="_blank">a.root-servers.net</a>. <a href="http://nstld.verisign-grs.com" target="_blank">nstld.verisign-grs.com</a>. 2020072000 1800 900 604800 86400<br><br>;; Query time:
1043 msec<br>;; SERVER: 192.168.14.10#53(192.168.14.10)<br>;; WHEN: Mon Jul 20 11:38:06 EDT 2020<br>;; MSG SIZE rcvd: 147<br><br><br>Log output from NS1 (recursive)<br><truncate><br>Jul 20 15:38:05 ns1 <a href="http://daemon.info" target="_blank">
daemon.info</a> named[4022]: validating example.home/SOA: got insecure response; parent indicates it should be secure<br>Jul 20 15:38:05 ns1 <a href="http://daemon.info" target="_blank">daemon.info</a> named[4022]: no valid RRSIG resolving 'c1.
example.home/DS/IN': 192.168.14.20#53<br>Jul 20 15:38:06 ns1 <a href="http://daemon.info" target="_blank">daemon.info</a> named[4022]: insecurity proof failed resolving 'c1.example.home/A/IN': 192.168.14.20#53<br></truncate><br><br>and
there is no log entries on the authoritative server</div><div dir="ltr"><br></div><div>/Weeltin<br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, Jul 19, 2020 at 6:05 AM Josh Kuo <<a href="mailto:[email protected]"
target="_blank">[email protected]</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div><div dir="auto">When querying your internal domain, I see the query
actually ends with “recursion requested but not available”, it looks like you are querying directly against your auth server, so I would check the setting to ensure the zone file is actually loaded correctly.</div><div dir="auto"><br></div><div dir="
auto">What Mark answered is assuming you are querying the recursive which then returned SERVFAIL due to DNSSEC validation, but I do not see that in the information you provided. </div><div dir="auto"><br></div><div dir="auto">Can you run dig on the
auth server itself, dig @ 127.0.0.1 for example.home, and see what it returns?</div></div><div><br><div class="gmail_quote"><br></div></div>
</blockquote></div></div>
</blockquote></div>

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)

Who's Online

System Info

Sysop:	Keyop
Location:	Huddersfield, West Yorkshire, UK
Users:	716
Nodes:	16 (2 / 14)
Uptime:	58:46:11
Calls:	12,117
Files:	15,010
Messages:	6,518,707

DNS error, from a newbee to the real experts..

Who's Online

System Info