Solved

Creating a one way trust on a DMZ server

Posted on 2014-09-08
1
446 Views
Last Modified: 2014-12-09
I have setup a dmz server and made it a DC and transferred all of the roles from the 2003 DC to the 2012R2 DC.  All of the users and groups replicated without issue.  I DCpromo down the old 2003 DC.  I opened the firewall completely and then created a one way transitive forest trust from the Internal Domain controller.  I am having issues with validating the one way trust that I have established.    Both the internal and DMZ domains are on the domain functional level and the forest functional level of 2012R2.  When I try to validate the trust from the inside it says that it is valid.  However when I perform this check from the DMZ DC I get the following error message:  The local security authority is unable to obtain an RPC connection to the active directory domain controller DNS2.xxx.us  Please check that the name can be resolved and that the server is available.

I have downloaded portqry 2.0 and checked all of the ports I know to check.  The following ports are listening: 123. 135. 464, 49152, 389. 636. 3268, 3269, 53, 88
445 is filtered.  

I have checked the services for RPC to make sure they are running and the following are on both internal and external: Remote Procedure Call, Remote Procedure Call Locator, RPC endpoint mapper,

Any ideas?
0
Comment
Question by:red_75116
1 Comment
 
LVL 13

Accepted Solution

by:
George Sas earned 500 total points
ID: 40329885
Why would you need a trust relationship between two DC's in the same domain ?

Better use RODC on the perimeter network :
Designing RODCs in the Perimeter Network  - http://technet.microsoft.com/en-us/library/dd728028%28WS.10%29.aspx
Deploying RODCs in the Perimeter Network - http://technet.microsoft.com/en-us/library/dd728035%28WS.10%29.aspx

On the design article you can also find the ports needed in the firewall.
0

Featured Post

Best Practices: Disaster Recovery Testing

Besides backup, any IT division should have a disaster recovery plan. You will find a few tips below relating to the development of such a plan and to what issues one should pay special attention in the course of backup planning.

Question has a verified solution.

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

In this article, we will see the basic design consideration while designing a Multi-tenant web application in a simple manner. Though, many frameworks are available in the market to develop a multi - tenant application, but do they provide data, cod…
Is your Office 365 signature not working the way you want it to? Are signature updates taking up too much of your time? Let's run through the most common problems that an IT administrator can encounter when dealing with Office 365 email signatures.
In this Micro Tutorial viewers will learn how to restore single file or folder from Bare Metal backup image of their system. Tutorial shows how to restore files and folders from system backup. Often it is not needed to restore entire system when onl…
This tutorial will walk an individual through the process of configuring basic necessities in order to use the 2010 version of Data Protection Manager. These include storage, agents, and protection jobs. Launch Data Protection Manager from the deskt…

896 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