Pros and cons in setting AD domain trust into my AD domain for more than 10+ AD domain and some with same FQDN or label ?

Hi,
Can someone please share what is the pros and Cons of trusting AD domain for more than 10 different AD sites into my existing single domain forest let say ParentCompany.com ?
At the moment I only have one single forest AD domain with the Domain and Forest functionality Windows Server 2003. The main domain controller FSMO role holder is in the Data Center spread across three different VMs running on Windows Server 2008 R2.
The main/parent company has acquired smaller business chain of 15+ offices in which they have their own Domain Controller and also their own domain, sometimes they also got the same AD domain between them (no trust or whatsoever in those 15+ AD domain).
Sounds crazy but yes, there is no standardization in them or whoever manage their IT infrastructure previously.
I'm now considering what are the benefits of creating the AD domain and trust versus importing those AD objects into my domain and then decommission them.
No need to worry about Exchange Server since all of the user in those sites connecting to the RDS to my ParentCompany.com terminal servers.
My requirements or goal are as follows:
1. Simplify the AD domain structure & maintenance
2. Try to avoid the disruptions of the user in terms of downtime and selecting multiple different domain everytime they login to their PC or SharePoint sites.
any kind of help and suggestion would be greatly appreciated.
Thanks.
/* Server Support Specialist */

Can someone please share what is the pros and Cons of trusting AD domain for more than 10 different
AD sites into my existing single domain forest let say ParentCompany.com ?
I think you mean 10 AD domains.
Managing multiple domains can be difficult for administration. I usually recommend using a single domain in a single forest with OUs to separate resources whenever it is possible.
However, if you can't do that then you can simply create trust relationships between your domains. The advantage is that you can enable access to resources to different domains. I do not see cons here.
The main/parent company has acquired smaller business chain of 15+ offices in which they have
their own Domain Controller and also their own domain, sometimes they also got the same AD domain between them (no trust or whatsoever in those 15+ AD domain). Sounds crazy but yes, there is no standardization in them or whoever manage their IT infrastructure
previously.
I'm now considering what are the benefits of creating the AD domain and trust versus importing those
AD objects into my domain and then decommission them.
I would recommend consolidating your domains into a single one. ADMT is a migration tool that you can use. The advantage would be the ease of administration. Also, by having multiple DCs for the same domain across sites, you will take benefit of High Availability
of your and DRP.
This posting is provided AS IS with no warranties or guarantees , and confers no rights.
Ahmed MALEK
My Website Link
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[Fwd: Client accessing MBeanHome for more than one domain receives SecurityException]

Fwd'ing to security newsgroup
-------- Original Message --------
Subject: Client accessing MBeanHome for more than one domain receives
SecurityException
Date: 4 Mar 2004 07:27:33 -0800
From: Dinesh Bhat <[email protected]>
Reply-To: Dinesh Bhat <[email protected]>
Organization: BEA NEWS SITE
Newsgroups: weblogic.developer.interest.management
Hi,
When a client accesses MBeans of more than one domains (Weblogic 8.1)
that have
different passwords, it receives a SecurityException. This occurs when
the MBeanHome
for each domain is looked up at initialization and reused for each
request ( to
access MBeans ). The security exception does not occur if the MBeanHome
for each
domain is looked up for each request. On initial review, this behavoir
seems inconsistent.
Looking up the MBeanHome for each request may introduce a significant
overhead.
I am not sure if concurrent lookups would also cause the same problem.
I have read on another post that we can work around this problem by
establishing
a trust relationship between the servers, but this may not be feasible
when one
is monitoring a lot of servers and the overhead of configuration may be
an issue.
I have attached code that can reproduce the problem.
Please advise on the correct approach.
Thanks
Dinesh Bhat
Panacya Inc.
import java.util.ArrayList;
import java.util.Set;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Hashtable;
import javax.management.MBeanServer;
import javax.naming.Context;
import weblogic.jndi.Environment;
import weblogic.management.MBeanHome;
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* java.lang.SecurityException: [Security:090398]Invalid Subject: principals=[weblogic, Administrators]
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     at weblogic.rmi.internal.BasicRemoteRef.invoke(BasicRemoteRef.java:138)
     at weblogic.management.internal.AdminMBeanHomeImpl_811_WLStub.getDomainName(Unknown Source)
     at WLSecurityTest.getWeblogicInfo(WLSecurityTest.java:140)
     at WLSecurityTest.runTest(WLSecurityTest.java:75)
     at WLSecurityTest.<init>(WLSecurityTest.java:66)
     at WLSecurityTest.main(WLSecurityTest.java:51)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:324)
     at com.intellij.rt.execution.application.AppMain.main(Unknown Source)
Caused by: java.lang.SecurityException: [Security:090398]Invalid Subject: principals=[weblogic, Administrators]
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     at weblogic.rmi.internal.BasicServerRef.dispatch(BasicServerRef.java:299)
     at weblogic.rjvm.RJVMImpl.dispatchRequest(RJVMImpl.java:920)
     at weblogic.rjvm.RJVMImpl.dispatch(RJVMImpl.java:841)
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ArrayList wlsDetailsList = new ArrayList();
HashMap connectionMap = new HashMap();
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try
WLSecurityTest wlSecurityTest = new WLSecurityTest();
catch (Exception e)
e.printStackTrace();
* Constructor
* @throws Exception
public WLSecurityTest() throws Exception
int noOfTries = 10;
getWLSDetails();
for( int i=0; i <= noOfTries; i++)
runTest();
* Runs the test
private void runTest()
for (int i = 0; i < wlsDetailsList.size(); i++)
WLSDetails wlsDetails = (WLSDetails) wlsDetailsList.get(i);
getWeblogicInfo(wlsDetails);
* Get Weblogic details from System properties
* @throws Exception
private void getWLSDetails() throws Exception
wlsDetailsList = new ArrayList();
String hostKeyTmpl = "wls.host";
String userIdKeyTmpl = "wls.userId";
String passwordKeyTmpl = "wls.password";
boolean done = false;
for (int i = 0; !done; i++)
WLSDetails wlsDetails = new WLSDetails();
String hostKey = hostKeyTmpl + "." + Integer.toString(i);
String userIdKey = userIdKeyTmpl + "." + Integer.toString(i);
String passwordKey = passwordKeyTmpl + "." + Integer.toString(i);
wlsDetails.hostName = System.getProperty(hostKey);
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wlsDetails.userId = System.getProperty(userIdKey);
wlsDetails.password = System.getProperty(passwordKey);
connect(wlsDetails);
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env.setProviderUrl("t3://" + wlsDetails.hostName);
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e.printStackTrace();
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Message was edited by: KEForex
Message was edited by: KEForex

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