Solved

NSLookup is returning the FQDN of my domain controllers

Posted on 2013-01-26
11
43 Views
Last Modified: 2015-06-23
I set up a new zone of a web site. I specified 2 names servers: ns1.[INTERNET_DOMAIN_NAME].com and ns2.[INTERNET_DOMAIN_NAME].com.

When I run NSLookup against either name server, it shows those to FQDNs but it also returns the FQDN of both of my domain controllers. There are only 2 NS records in the zone. Why would it be returning 4 records and exposing that information publicly and how can I prevent that?

Thx so much,
Dave
0
Comment
Question by:SQLDave
11 Comments
 
LVL 23

Expert Comment

by:Nagendra Pratap Singh
ID: 38823492
Is it possible to upload the output with actual details masked?
0
 

Author Comment

by:SQLDave
ID: 38823506
I'm not sure how useful that would be, but I did here is the results of just looking up google
NSLookup for google
The only difference in my scenario is that along with the 2 public NS records, it is also publishing my domain controllers complete with FQDN and their internal IP addresses.
0
 

Author Comment

by:SQLDave
ID: 38823529
It might help to add that if I create another new zone and don't add any NS records, it will still return 2 servers ( my domain controllers and their internal IPs ).
0
 
LVL 5

Expert Comment

by:balmasri
ID: 38823544
1-Do you perform the query from a workstation that joined to the domain ?
2-Is your query performed using the organization's internet connectivity ( from inside) or from outside ( public connectivity )?
0
 
LVL 23

Expert Comment

by:Nagendra Pratap Singh
ID: 38823547
outside PCs cannot connect to your DNS so it is all OK.
0
Do You Know the 4 Main Threat Actor Types?

Do you know the main threat actor types? Most attackers fall into one of four categories, each with their own favored tactics, techniques, and procedures.

 

Author Comment

by:SQLDave
ID: 38823552
This DNS is for public consumption and the same information was definately public as it showed up using this tool as well.

http://network-tools.com/default.asp?prog=dnsrec&host=google.com
0
 
LVL 31

Expert Comment

by:Henrik Johansson
ID: 38824356
Are you using same domain for public and internal namespacr?
If so, you nead to split the zone to have external zone on separate DNS server and the internal zone on internal DNS/DC.
Do not store external DNS zone as AD integrated zone on internal DCs
0
 

Author Comment

by:SQLDave
ID: 38824506
It is not the same domain, but it is the same server.

So I should set up 2 seperate DNS servers to service external DNS and make sure they are not AD integrated?
0
 
LVL 23

Accepted Solution

by:
Nagendra Pratap Singh earned 100 total points
ID: 38825543
You should be able to use a forwarder for the external domains.
0
 
LVL 34

Expert Comment

by:Seth Simmons
ID: 40845601
This question has been classified as abandoned and is closed as part of the Cleanup Program. See the recommendation for more details.
0

Featured Post

Enabling OSINT in Activity Based Intelligence

Activity based intelligence (ABI) requires access to all available sources of data. Recorded Future allows analysts to observe structured data on the open, deep, and dark web.

Join & Write a Comment

To effectively work with Diskpart on a Server Core, it is necessary to write some small batch script's, because you can't execute diskpart in a remote powershell session. To get startet, place the Diskpart batch script's into a share on your loca…
Possible fixes for Windows 7 and Windows Server 2008 updating problem. Solutions mentioned are from Microsoft themselves. I started a case with them from our Microsoft Silver Partner option to open a case and get direct support from Microsoft. If s…
This tutorial will show how to push an installation of Backup Exec to an additional server in both 2012 and 2014 versions of the software. Click on the Backup Exec button in the upper left corner. From here, select Installation and Licensing, then I…
This tutorial will walk an individual through the steps necessary to install and configure the Windows Server Backup Utility. Directly connect an external storage device such as a USB drive, or CD\DVD burner: If the device is a USB drive, ensure i…

758 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

18 Experts available now in Live!

Get 1:1 Help Now