[gptalk] Re: (no subject)

All it takes is '1' GPO along the path to the computer account... and 
'Loopback' is on.

Remember, it's a registry setting, so that's what the system will read in a 
single key.

... that said, it doesn't matter if there is more than one GPO having the 
setting, but it could make debugging a problem harder. Just have one GPO apply 
it.

Jerry Cruz | Group Policies Product Manager | Windows Infrastructure 
Architecture | CNO | Boeing IT

From: gptalk-bounce@xxxxxxxxxxxxx [mailto:gptalk-bounce@xxxxxxxxxxxxx] On 
Behalf Of Steve Crompton
Sent: Tuesday, January 06, 2009 11:49 AM
To: gptalk@xxxxxxxxxxxxx
Subject: [gptalk] Re: (no subject)

Excellent.

Would i be correct pursuming that you can only have 1 GPO per OU which has Loop 
back enabled or can you have more ?

________________________________

From: darren@xxxxxxxxxx
To: gptalk@xxxxxxxxxxxxx
Subject: [gptalk] Re: (no subject)
Date: Tue, 6 Jan 2009 11:13:54 -0800

I decided to blog it as well, so you have it for posterity :)

http://sdmsoftware.com/blog/2009/01/please_explain_loopback_proces.html

From: gptalk-bounce@xxxxxxxxxxxxx [mailto:gptalk-bounce@xxxxxxxxxxxxx] On 
Behalf Of Nelson, Jamie
Sent: Tuesday, January 06, 2009 10:35 AM
To: gptalk@xxxxxxxxxxxxx
Subject: [gptalk] Re: (no subject)

Nice summary Darren. We need to bookmark this one for future questions. I was 
too lazy to type that much so I just found a link on the web. :P

Jamie Nelson | Operations Consultant | BI&T Infrastructure-Intel | Devon Energy 
Corporation | Work: 405.552.8054 | Mobile: 405.200.8088 | 
http://www.dvn.com<http://www.dvn.com/>

From: gptalk-bounce@xxxxxxxxxxxxx [mailto:gptalk-bounce@xxxxxxxxxxxxx] On 
Behalf Of Darren Mar-Elia
Sent: Tuesday, January 06, 2009 11:12 AM
To: gptalk@xxxxxxxxxxxxx
Subject: [gptalk] Re: (no subject)

Steve-
Is a complex topic for many (including me!) so I will try to attack it from a 
solution perspective. Essentially loopback is designed to help answer the 
following challenge, "How do I control user policy on a particular computer or 
set of computers such that, no matter who logs onto those computers, they 
always get the same user policy?". As you know, GP is processed by computers 
and users and the policy that a computer or user gets is determined by where 
the computer and user account resides in AD, where the GPO is linked, and 
whether its filtered or not. Loopback is a special mode of GP processing that 
you set on a per-computer basis. When a computer has loopback enabled, any user 
that logs onto that computer can be given a set of per-user policies that is 
different than the ones they would normally receive by virtue of where their 
user account is. The simplest example is a Terminal Server environment. A 
common configuration is to create an OU called "Terminal Servers". In that OU, 
you place computer accounts that are your Terminal Server machines. Now, linked 
to that OU, you create a GPO called "TS Loopback Policy". In that GPO, you 
enable loopback under Computer Configuration\Administrative 
Templates\System\Group Policy\User Group Policy Loopback Processing Mode. When 
you enable the policy, you have two options-merge or replace. Merge says, 
"first apply the user's normal user policies (as if they were logging into 
their normal workstation) then apply the loopback user settings". Replace says, 
"Just apply the loopback user settings". I generally tell people to choose 
"replace" mode unless you have a specific requirement for merging.

So, now that loopback is enabled, on that same TS GPO (assuming the simplest 
case) under User Configuration, you can set all of the loopback user settings 
that you want to apply to users logging into these TS boxes. When the user logs 
on, these user settings are applied instead of their "home" ones.

Hope that helps.

Darren

From: gptalk-bounce@xxxxxxxxxxxxx [mailto:gptalk-bounce@xxxxxxxxxxxxx] On 
Behalf Of Steve Crompton
Sent: Tuesday, January 06, 2009 5:49 AM
To: gptalk@xxxxxxxxxxxxx
Subject: [gptalk] (no subject)

Hi

Could you please explain Group Policy Loopback Processing ? im finding this 
very difficult to understand !

Thanks
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