Discussion:
Issues configuring delegated subdomain zone
BARAJAS BERMEJO, Sergio
2018-09-12 09:47:13 UTC
Permalink
Hello,
I have an issue configuring delegated subdomain zone from one NS to another one.
For security reasons I will obviously not put real domain data (I imagine you will understand).

Let's suppose that the delegated subdomain is: midominio.principal.hosting.com
If we make a "dig" query, putting the hosting server's NS as the domain name server:

dig @ns1.hosting.com midominio.principal.hosting.com

; <<>> DiG 9.10.3-P4-Debian <<>> @ns1.hosting.com midominio.principal.hosting.com
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 40831
;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 2, ADDITIONAL: 3
;; WARNING: recursion requested but not available

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;midominio.principal.hosting.com. IN A

;; AUTHORITY SECTION:
midominio.principal.hosting.com. 125 IN NS sb2.principal.hosting.com.
midominio.principal.hosting.com. 125 IN NS sb1.principal.hosting.com.

;; ADDITIONAL SECTION:
sb1.principal.hosting.com. 125 IN A xxx.xxx.xxx.52
sb2.principal.hosting.com. 125 IN A xxx.xxx.xxx.53

;; Query time: 12 msec
;; SERVER: 31.193.224.20#53(31.193.224.20)
;; WHEN: Wed Sep 12 08:09:36 CEST 2018
;; MSG SIZE rcvd: 133

From which we deduce several things:


1. That in the zone principal.hosting.com of the main server of the hosting there are created two registers of type A:
* sb1.principal.hosting.com. 125 IN A xxx.xxx.xxx.52
sb2.principal.hosting.com. 125 IN A xxx.xxx.xxx.53
2. That the authorized DNS servers on the subdomain midominio.principal.hosting.com are:
sb1.principal.hosting.com y el sb2.principal.hosting.com

Having said that, in my vps I have defined the following:

; BIND reverse data file for empty rfc1918 zone
;
; DO NOT EDIT THIS FILE - it is used for multiple zones.
; Instead, copy it, edit named.conf, and use that copy.
;

$TTL 86400
@ IN SOA sb1. sb2. mail. (
10 ; Serial
604800 ; Refresh
86400 ; Retry
2419200 ; Expire
86400 ) ; Negative Cache TTL
; REGISTROS
NS sb1.principal.hosting.com.
NS sb2.principal.hosting.com.
IN MX 10 mail.midominio.principal.hosting.com.
sb1 IN A xxx.xxx.xxx.52
sb2 IN A xxx.xxx.xxx.53
www IN A xxx.xxx.xxx.53
mail IN A xxx.xxx.xxx.53
webmail IN CNAME mail
* IN A xxx.xxx.xxx.53


However I can not get it to solve for example www.midominio.principal.hosting.com What am I doing wrong?.
Thank you very much in advance
Bob Harold
2018-09-12 14:47:30 UTC
Permalink
On Wed, Sep 12, 2018 at 5:49 AM BARAJAS BERMEJO, Sergio <
***@econocom.com> wrote:

> Hello,
> I have an issue configuring delegated subdomain zone from one NS to
> another one.
> For security reasons I will obviously not put real domain data (I imagine
> you will understand).
>
> Let's suppose that the delegated subdomain is:
> midominio.principal.hosting.com
> If we make a "dig" query, putting the hosting server's NS as the domain
> name server:
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> *dig @ns1.hosting.com <http://ns1.hosting.com>
> midominio.principal.hosting.com <http://midominio.principal.hosting.com> ;
> <<>> DiG 9.10.3-P4-Debian <<>> @ns1.hosting.com <http://ns1.hosting.com>
> midominio.principal.hosting.com <http://midominio.principal.hosting.com> ;
> (1 server found) ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<-
> opcode: QUERY, status: NOERROR, id: 40831 ;; flags: qr rd; QUERY: 1,
> ANSWER: 0, AUTHORITY: 2, ADDITIONAL: 3 ;; WARNING: recursion requested but
> not available ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096
> ;; QUESTION SECTION: ;midominio.principal.hosting.com
> <http://midominio.principal.hosting.com>. IN A ;; AUTHORITY SECTION:
> midominio.principal.hosting.com <http://midominio.principal.hosting.com>.
> 125 IN NS sb2.principal.hosting.com <http://sb2.principal.hosting.com>.
> midominio.principal.hosting.com <http://midominio.principal.hosting.com>.
> 125 IN NS sb1.principal.hosting.com <http://sb1.principal.hosting.com>. ;;
> ADDITIONAL SECTION: sb1.principal.hosting.com
> <http://sb1.principal.hosting.com>. 125 IN A xxx.xxx.xxx.52
> sb2.principal.hosting.com <http://sb2.principal.hosting.com>. 125 IN A
> xxx.xxx.xxx.53 ;; Query time: 12 msec ;; SERVER:
> 31.193.224.20#53(31.193.224.20) ;; WHEN: Wed Sep 12 08:09:36 CEST 2018 ;;
> MSG SIZE rcvd: 133*
>
> From which we deduce several things:
>
>
> 1. That in the zone principal.hosting.com of the main server of the
> hosting there are created two registers of type A:
> 1.
> *sb1.principal.hosting.com <http://sb1.principal.hosting.com>. 125 IN A
> xxx.xxx.xxx.52 sb2.principal.hosting.com
> <http://sb2.principal.hosting.com>. 125 IN A xxx.xxx.xxx.53*
> 2. That the authorized DNS servers on the subdomain
> midominio.principal.hosting.com are:
> *sb1.principal.hosting.com <http://sb1.principal.hosting.com>* y el *sb2.principal.hosting.com
> <http://sb2.principal.hosting.com>*
>
> Having said that, in my vps I have defined the following:
>
>
>
>
>
>
> *; BIND reverse data file for empty rfc1918 zone ; ; DO NOT EDIT THIS FILE
> - it is used for multiple zones. ; Instead, copy it, edit named.conf, and
> use that copy. ; *
> *$TTL 86400*
>
> *@ IN SOA sb1. sb2. mail. (*
>

The first field after "SOA" is the *ONE* master server for the domain.
You cannot list two. Should be:
@ IN SOA sb1. mail. (

--
Bob Harold


>
>
>
>
>
>
> * 10 ; Serial 604800 ; Refresh 86400 ; Retry 2419200 ; Expire 86400 ) ;
> Negative Cache TTL ; REGISTROS NS sb1.*
> *principal.hosting.com <http://principal.hosting.com>. NS sb2.*
> *principal.hosting.com <http://principal.hosting.com>. IN MX 10 mail.*
> *midominio.principal.hosting.com <http://midominio.principal.hosting.com>.
> sb1 IN A *
> *xxx.xxx.xxx.52 sb2 IN A *
> *xxx.xxx.xxx.53 www IN A *
> *xxx.xxx.xxx.53 mail IN A *
>
> *xxx.xxx.xxx.53 webmail IN CNAME mail * IN A **xxx.xxx.xxx.53*
>
>
> However I can not get it to solve for example
> www.midominio.principal.hosting.com What am I doing wrong?.
> Thank you very much in advance
>
> _______________________________________________
> Please visit https://lists.isc.org/mailman/listinfo/bind-users to
> unsubscribe from this list
>
> bind-users mailing list
> bind-***@lists.isc.org
> https://lists.isc.org/mailman/listinfo/bind-users
>
BARAJAS BERMEJO, Sergio
2018-09-12 18:31:23 UTC
Permalink
Thanks this is solver, now I have another problem.

I will send a new message




________________________________
De: Bob Harold <***@umich.edu>
Enviado: miƩrcoles, 12 de septiembre de 2018 16:47
Para: BARAJAS BERMEJO, Sergio
Cc: bind-***@lists.isc.org
Asunto: Re: Issues configuring delegated subdomain zone


On Wed, Sep 12, 2018 at 5:49 AM BARAJAS BERMEJO, Sergio <***@econocom.com<mailto:***@econocom.com>> wrote:
Hello,
I have an issue configuring delegated subdomain zone from one NS to another one.
For security reasons I will obviously not put real domain data (I imagine you will understand).

Let's suppose that the delegated subdomain is: midominio.principal.hosting.com<http://midominio.principal.hosting.com>
If we make a "dig" query, putting the hosting server's NS as the domain name server:

dig @ns1.hosting.com<http://ns1.hosting.com> midominio.principal.hosting.com<http://midominio.principal.hosting.com>

; <<>> DiG 9.10.3-P4-Debian <<>> @ns1.hosting.com<http://ns1.hosting.com> midominio.principal.hosting.com<http://midominio.principal.hosting.com>
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 40831
;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 2, ADDITIONAL: 3
;; WARNING: recursion requested but not available

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;midominio.principal.hosting.com<http://midominio.principal.hosting.com>. IN A

;; AUTHORITY SECTION:
midominio.principal.hosting.com<http://midominio.principal.hosting.com>. 125 IN NS sb2.principal.hosting.com<http://sb2.principal.hosting.com>.
midominio.principal.hosting.com<http://midominio.principal.hosting.com>. 125 IN NS sb1.principal.hosting.com<http://sb1.principal.hosting.com>.

;; ADDITIONAL SECTION:
sb1.principal.hosting.com<http://sb1.principal.hosting.com>. 125 IN A xxx.xxx.xxx.52
sb2.principal.hosting.com<http://sb2.principal.hosting.com>. 125 IN A xxx.xxx.xxx.53

;; Query time: 12 msec
;; SERVER: 31.193.224.20#53(31.193.224.20)
;; WHEN: Wed Sep 12 08:09:36 CEST 2018
;; MSG SIZE rcvd: 133

From which we deduce several things:


1. That in the zone principal.hosting.com<http://principal.hosting.com> of the main server of the hosting there are created two registers of type A:
* sb1.principal.hosting.com<http://sb1.principal.hosting.com>. 125 IN A xxx.xxx.xxx.52
sb2.principal.hosting.com<http://sb2.principal.hosting.com>. 125 IN A xxx.xxx.xxx.53
2. That the authorized DNS servers on the subdomain midominio.principal.hosting.com<http://midominio.principal.hosting.com> are:
sb1.principal.hosting.com<http://sb1.principal.hosting.com> y el sb2.principal.hosting.com<http://sb2.principal.hosting.com>

Having said that, in my vps I have defined the following:

; BIND reverse data file for empty rfc1918 zone
;
; DO NOT EDIT THIS FILE - it is used for multiple zones.
; Instead, copy it, edit named.conf, and use that copy.
;

$TTL 86400
@ IN SOA sb1. sb2. mail. (

The first field after "SOA" is the *ONE* master server for the domain. You cannot list two. Should be:
@ IN SOA sb1. mail. (

--
Bob Harold

10 ; Serial
604800 ; Refresh
86400 ; Retry
2419200 ; Expire
86400 ) ; Negative Cache TTL
; REGISTROS
NS sb1.principal.hosting.com<http://principal.hosting.com>.
NS sb2.principal.hosting.com<http://principal.hosting.com>.
IN MX 10 mail.midominio.principal.hosting.com<http://midominio.principal.hosting.com>.
sb1 IN A xxx.xxx.xxx.52
sb2 IN A xxx.xxx.xxx.53
www IN A xxx.xxx.xxx.53
mail IN A xxx.xxx.xxx.53
webmail IN CNAME mail
* IN A xxx.xxx.xxx.53


However I can not get it to solve for example www.midominio.principal.hosting.com<http://www.midominio.principal.hosting.com> What am I doing wrong?.
Thank you very much in advance

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

bind-users mailing list
bind-***@lists.isc.org<mailto:bind-***@lists.isc.org>
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Barry Margolin
2018-09-13 23:54:16 UTC
Permalink
In article <mailman.490.1536745766.803.bind-***@lists.isc.org>,
"BARAJAS BERMEJO, Sergio" <***@econocom.com> wrote:

> Having said that, in my vps I have defined the following:
>
> ; BIND reverse data file for empty rfc1918 zone
> ;
> ; DO NOT EDIT THIS FILE - it is used for multiple zones.
> ; Instead, copy it, edit named.conf, and use that copy.
> ;
>
> $TTL 86400
> @ IN SOA sb1. sb2. mail. (
> 10 ; Serial
> 604800 ; Refresh
> 86400 ; Retry
> 2419200 ; Expire
> 86400 ) ; Negative Cache TTL
> ; REGISTROS
> NS sb1.principal.hosting.com.
> NS sb2.principal.hosting.com.
> IN MX 10 mail.midominio.principal.hosting.com.
> sb1 IN A xxx.xxx.xxx.52
> sb2 IN A xxx.xxx.xxx.53
> www IN A xxx.xxx.xxx.53
> mail IN A xxx.xxx.xxx.53
> webmail IN CNAME mail
> * IN A xxx.xxx.xxx.53

Not related to the problem, but the comments at the top don't accurately
describe this file. It looks like they were copied from a completely
unrelated file.

--
Barry Margolin
Arlington, MA
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