can I fix response DNS query for multiple domain controller?

Question

Hi.

I have 3 domain controller and 3 of sites.

ex)

• site 1 DC (172.16.96.10)
• site 2 (10.1.1.10)
• site 3 (192.168.1.1.10)

This domain name is a.com.

Also I have one more domain name of b.com.

They have trusted and they can be query each others by conditional forwarder.

I was query from b.com to a.com by ping.

I have received a.com was 172.16.96.10

I was ping again to a.com after ipconfig /flushdns .

I have received a.com was 10.1.1.10

I was again... received 192.168.1.1.0

Here is my question.

I wanna received only site 1 DC IPs when query to a.com from b.com

(I need fixed response)

Is it possible scenario?

If it available, how do I config this.

Thanks.

Answer 1

Hi @Sunghyun Park •

You can avoid DNS registration (type A) by creation the following registry key on all DC except DC in site1:

Value name: DnsAvoidRegisterRecords
Data type: REG_MULTI_SZ

Value: LdapIpAddress

_Path: HKLM\System\CurrentControlSet\Services\Netlogon\Parameters_

You can also avoid SRV (kerberos , LDAP, GC,..) record as mentioned on the following link :

How to optimize the location of a domain controller or global catalog that resides outside of a client's site

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