Solved

How Do DNS Root Hints on a DC integrated DNS server work?

Posted on 2014-02-24
1
905 Views
Last Modified: 2014-02-24
I have a quick question that relates to my own conceptual understanding.

I have a domain controller that is setup as our LANs DNS server using active directory integrated DNS.  This server is using Root Hints and not Forwarders for our networks public DNS resolution.

I am just wondering, are Root Hints completely independent for DNS resolution, in the sense that the Domain Controllers will be pulling down DNS info from these preconfigured root DNS servers?  Or does there still need to be additional DNS settings somewhere, like on your router pointing to your ISP or OpenDNS or Google or something?  I know this is exactly what forwarders do.  So the answer I am expecting is no, and that root hints will allow for DNS resolution all by them selves.  Also, the two Domain controllers network card settings are pointing to each-other as primary and themselves as secondary to stop the DNS island effect.

I just want to make sure, that when we move offices and our WAN ISP information changes that our domain controllers will still be able to do DNS resolution as long as our router has its new WAN IP, default gateway, and subnet mask, while of course the internal IP scope remains the same.

thanks
0
Comment
Question by:CnicNV
1 Comment
 
LVL 20

Accepted Solution

by:
CompProbSolv earned 500 total points
ID: 39883918
One preferred method of setting up DNS is as you described.  No forwarders, just Root Hints.  In addition, the server and workstation IP settings should point only to the local server for DNS.  This should work properly and be portable.

You can get better results if you use a forwarder on the server to an appropriate DNS (possibly at your ISP), but this will mean that you have to change it if the ISP changes.

If no one is pointing at the router for DNS, it shouldn't matter to workstations or to the server how the router is configured for DNS.  Of course, the router won't be able to resolve names if you don't point it at something valid for DNS, but that may not be an issue.
0

Featured Post

Netscaler Common Configuration How To guides

If you use NetScaler you will want to see these guides. The NetScaler How To Guides show administrators how to get NetScaler up and configured by providing instructions for common scenarios and some not so common ones.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

by Batuhan Cetin Within the dynamic life of an IT administrator, we hold many information in our minds like user names, passwords, IDs, phone numbers, incomes, service tags, bills and the order from our wives to buy milk when coming back to home.…
On July 14th 2015, Windows Server 2003 will become End of Support, leaving hundreds of thousands of servers around the world that still run this 12 year old operating system vulnerable and potentially out of compliance in many organisations around t…
Edureka is one of the fastest growing and most effective online learning sites.  We are here to help you succeed.
Both in life and business – not all partnerships are created equal. As the demand for cloud services increases, so do the number of self-proclaimed cloud partners. Asking the right questions up front in the partnership, will enable both parties …

911 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

20 Experts available now in Live!

Get 1:1 Help Now