A question about DNS subdomain

Question

This is a question about DNS subdomain.
The DNS server for the parent DNS domain is dns1.ours.com.
The DNS server for the child/sub DNS domain is bee.child.ours.com.
Configurations on dns1.ours.com:
File: db.ours.com�F
@IN SOA dns1.ours.com. postmaster.ours.com. (
10051215 ; sn
86400 ;refresh
7100 ;retry
777600 ;expire
126000 ) ;min
@ IN NS dns1.ours.com.
dns1 IN A 210.x.x.15
�c
[color=Blue]child.ours.com. IN NS bee.child.ours.com.
bee.child.ours.com. IN A 210.x.x.10[color]
I did not changed anything in named.conf.
Configurations on bee.child.ours.com:
File db.child.ours.com:
@ IN SOA bee.child.ours.com. test.child.ours.com (
10051215 ; sn
86400 ;refresh
7100 ;retry
777600 ;expire
126000 ) ;min
@ IN NS bee.child.ours.com.
bee IN A 210.x.x.10
test IN A 210.x.x.x
File named.conf:
options {
directory "/var/named";
zone "." {
type hint;
file "master/db.cache";
zone "0.0.127.in-addr.arpa" {
type master;
file "master/db.0.0.127";
zone "x.x.210.in-addr.arpa" {
type master;
file "master/db.child.ours.com.rev";
zone "child.ours.com" {
type master;
file "master/db.child.ours.com";
#nslookup
Default Server: 210.x.x.10
Address: 210.x.x.10
// bee.child.ours.com: the DNS server for the child/sub DNS domain: child.ours.com
www.ours.comServer: 210.x.x.10
Address: 210.x.x.10
*** localhost can't find www.ours.com: No response from server
//failed to resolve A records in the parent domain, but can resolve A records in its own domain and other domains on the Internet.
set type=ns
ours.comServer: 210.x.x.10
Address: 210.x.x.10
Non-authoritative answer:
ours.com nameserver = dns1.ours.com
Authoritative answers can be found from:
dns1.ours.com internet address = 210.x.x.15
//find the DNS server for the parent domain
> server 210.x.x.15
// dns1.ours.com: the DNS server for the parent DNS domain: ours.com
Default Server: dns1.ours.com
Address: 210.x.x.15
test.child.ours.comServer: dns1.ours.com
Address: 210.x.x.15
*** dns1.ours.com can't find test.child.ours.com: No response from server
//failed to resolve A records in the child domain, but can resolve A records in its own domain and other domains on the Internet.
set type=ns
child.ours.comServer: dns1.ours.com
Address: 210.x.x.15
Non-authoritative answer:
child.ours.com nameserver = bee.child.ours.com
Authoritative answers can be found from:
bee.child.ours.com internet address = 210.x.x.10
//find the DNS server for the child domain
> server 210.x.x.100
// a public DNS server on the Internet
Default Server: [210.x.x.100]
Address: 210.x.x.100
set type=a
www.ours.comServer: [210.x.x.100]
Address: 210.x.x.100
Non-authoritative answer:
Name: www.ours.com
Address: 210.x.x.72
//find the A record in the parent domain
test.child.ours.comServer: [210.x.x.100]
Address: 210.x.x.100
Non-authoritative answer:
Name: test.child.ours.com
Address: 210.x.x.x
//find the A record in the child domain
I wonder why. It is BIND v8.2.2.
Thanks.

Answer 1

Hi AAnotherUser_,
Based on your description, the internal domain name is different from the external domain name, and the web server is hosted internally. And the goal is that the internal user can
access the web server by using an URL which include the MyCorp.com.
In this scenario, internet users access your domain name by connecting to the WAN IP address of your router. However, to make the internal users access the website, you would need
to create the external domain name as a zone on your internal DNS server.
After creating the DNS zone, right click the zone you created, choose New Host Record.
Type in the hostname, such as ‘www’, and provide the internal private IP address of your internal web server.
For more details, please refer to Ace’s blog below, the
Scenario 2: Different Internal and External but you are hosting the webserver internally
http://blogs.msmvps.com/acefekay/2009/09/03/split-zone-or-no-split-zone-can-t-access-internal-website-with-external-name/
Best Regards,
Tina