Responses inline.
> Sent: Thursday, September 01, 2005 10:54 AM
> To: Derick Anderson;
focu...@securityfocus.com
> Subject: RE: Group Policy: multiple password policies in the
> same domain?
>
> Good point Laura, I'd suspected that you might be able to use
> a different GPO at the same level but having never tested it
> I didn't want to committ it to writing! At least I know now :)
>
> Derick if you've filtered the security of the GPO's to just
> the service accounts then under what user account are you
> running RSoP? it will run under the context you are logged in
> as unless you are running it in planning mode to apply it to
> the account in question. Even then I am not sure that it will
> work properly if you've denied the user account you running
> it under access to the GPO.
I'm running it as Domain Admin. I've run modeling and planning modes
with similar results. The consistent thing is that whenever there's a
conflict with password policy that nothing gets set (red x or blank
settings in the report). The conflict only happens when both policies
can apply to the same computer. Doing a security filter with only users
results in having the policy denied.
> Taking Laura's point into account, whilst the password policy
> is applied at the computer level, it still requires that the
> user accounts it affects be able to read it and have "apply
> group policy" permissions. Presumably then, if you were to
> set up an additional GPO at the top of the AD tree and deny
> all user accounts but the service accounts "apply group
> policy" permissions then the policy would only be applied to
> the service accounts. Similarly you would need to ensure that
> the rest of the user accounts in the domain have "apply group
> policy" permissions denied on the GPO for the service
> accounts, or that it is lower in the list.
And that is what I tried first, to no avail. =) I believe because the
password policy is a computer-based setting it ignores filtering of
users. Again, trying to apply two policies to one computer results in a
clash that according to GPO modeling/planning/RSoP is resolved by not
trying to do anything. I suppose this could be tested by applying one
policy to the DCs only (using security filtering) and the other for
Domain Computers (which is every computer but the DCs). I bet that local
accounts on non-DCs would get the second policy while domain accounts
would get the first, irrespective of where the user logged in.
> As to why the password policy is computer based or user based
> - I think it makes no difference in the context of your
> question - you can only apply a password policy at the top of
> the AD tree and not in a GPO or object beneath it, so if it
> was user based it would make no difference to what you are
> trying to achieve.
>
> My thoughts as to why its computer based - well perhaps its
> related to the fact that it is "the computer" that
> authenticates the login? The account policies on a local
> machine are found in the local security policy msc. on a
> computer - which has no user related settings. A Group Policy
> combines these settings with various other related policies,
> it would make little sense then for password policy to be
> found under the user node of a GPO since user objects have
> nothing to do with authenticating logins.
>
> Richard
I believe that you can apply password policies in other OUs but it will
affect only the local computers in the OU for the very reason you state:
the computer authenticates the login. For a domain account, the "local"
computer is the domain controller, not the machine being logged into. I
think that allowing multiple password policies tied to user groups is
far more complicated than having it tied to a computer, and so that's
why it's a computer setting.
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