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Deploy a Central Access Policy (Demonstration Steps)

Published: February 29, 2012

Updated: February 29, 2012

Applies To: Windows Server 2012



In this scenario, the finance department security operations is working with central information security to specify the need for a central access policy so that they can protect archived finance information stored on file servers. The archived finance information from each country can be accessed as read-only by finance employees from the same country. A central finance admin group can access the finance information from all countries.

Deploying a central access policy includes the following phases:

 

Phase Description

Plan: Identify the need for policy and the configuration required for deployment

Identify the need for a policy and the configuration required for deployment.

Implement: Configure the components and policy

Configure the components and policy.

Deploy the central access policy

Deploy the policy.

Maintain: Change and stage the policy

Policy changes and staging

Before you begin, you need to set up lab to test this scenario. The steps for setting up the lab are explained in detail in Appendix B: Setting Up the Test Environment.

This section provides the high-level series of steps that aid in the planning phase of your deployment.

 

  Step Example

1.1

Business determines that a central access policy is needed

To protect finance information that is stored on file servers, the finance department security operations is working with central information security to specify the need for a central access policy.

1.2

Express the access policy

Finance documents should only be read by members of the Finance department. Members of the Finance department should only access documents in their own country. Only Finance Administrators should have write-access. An exception will be allowed for members of the FinanceException group. This group will have Read access.

1.3

Express the access policy in Windows Server 2012 constructs

 

Targeting:

  • Resource.Department Contains Finance

Access rules:

  • Allow read User.Country=Resource.Country AND User.department = Resource.Department

  • Allow Full control User.MemberOf(FinanceAdmin)

Exception:

Allow read memberOf(FinanceException)

1.4

Determine the file properties required for the policy

Tag files with:

  • Department

  • Country

1.5

Determine the claim types and groups required for the policy

Claim types:

  • Country

  • Department

User groups:

  • FinanceAdmin

  • FinanceException

1.6

Determine the servers on which to apply this policy

Apply the policy on all finance file servers.

This section presents an example that deploys a central access policy for finance documents.

 

No Step Example

2.1

Create claim types

Create the following claim types:

  • Department

  • Country

2.2

Create resource properties

Create and enable the following resource properties:

  • Department

  • Country

2.3

Configure a central access rule

Create a Finance Documents rule that includes the policy determined in the previous section.

2.4

Configure a central access policy (CAP)

Create a CAP called Finance Policy and add the Finance Documents rule to that CAP.

2.5

Target central access policy to the file servers

Publish the Finance Policy CAP to the file servers.

2.6

Enable KDC Support for claims, compound authentication and Kerberos armoring.

Enable KDC Support for claims, compound authentication and Kerberos armoring for contoso.com.

In the following procedure, you create two claim types: Country and Department.

  1. Open Server DC1 in Hyper-V Manager and log on as contoso\administrator, with the password pass@word1.

  2. Open Active Directory Administrative Center.

  3. Click the Tree View icon, expand Dynamic Access Control, and then select Claim Types.

    Right-click Claim Types, click New, and then click Claim Type.

    TipTip
    You can also open a Create Claim Type: window from the Tasks pane. On the Tasks pane, click New, and then click Claim Type.

  4. In the Source Attribute list, scroll down the list of attributes, and click department. This should populate the Display name field with department. Click OK.

  5. In Tasks pane, click New, and then click Claim Type.

  6. In the Source Attribute list, scroll down the list of attributes, and then click the c attribute (Country-Name). In the Display name field, type country.

  7. In the Suggested Values section, select The following values are suggested:, and then click Add.

  8. In the Value and Display name fields, type US, and then click OK.

  9. Repeat the above step. In the Add a suggest value dialog box, type JP in the Value and Display name fields, and then click OK.

PowerShell Logo Windows PowerShell equivalent commands

The following Windows PowerShell cmdlet or cmdlets perform the same function as the preceding procedure. Enter each cmdlet on a single line, even though they may appear word-wrapped across several lines here because of formatting constraints.

New-ADClaimType country -SourceAttribute c -SuggestedValues:@((New-Object Microsoft.ActiveDirectory.Management.ADSuggestedValueEntry("US","US","")), (New-Object Microsoft.ActiveDirectory.Management.ADSuggestedValueEntry("JP","JP","")))
New-ADClaimType department -SourceAttribute department


TipTip
You can use the Windows PowerShell History Viewer in Active Directory Administrative Center to look up the Windows PowerShell cmdlets for each procedure you perform in Active Directory Administrative Center. For more information, see Windows PowerShell History Viewer

The next step is to create resource properties. In the following procedure you create a resource property that is automatically added to the Global Resource Properties list on the domain controller, so that it is available to the file server.

  1. In the left pane of Active Directory Administrative Center, click Tree View. Expand Dynamic Access Control, and then select Resource Properties.

  2. Right-click Resource Properties, click New, and then click Reference Resource Property.

    TipTip
    You can also choose a resource property from the Tasks pane. Click New and then click Reference Resource Property.

  3. In Select a claim type to share its suggested values list, click country.

  4. In the Display name field, type country, and then click OK.

  5. Double-click the Resource Properties list, scroll down to the Department resource property. Right-click, and then click Enable. This will enable the built-in Department resource property.

  6. In the Resource Properties list on the navigation pane of the Active Directory Administrative Center, you will now have two enabled resource properties:

    • Country

    • Department

PowerShell Logo Windows PowerShell equivalent commands

The following Windows PowerShell cmdlet or cmdlets perform the same function as the preceding procedure. Enter each cmdlet on a single line, even though they may appear word-wrapped across several lines here because of formatting constraints.

New-ADResourceProperty Country -IsSecured $true -ResourcePropertyValueType MS-DS-MultivaluedChoice -SharesValuesWith country
Set-ADResourceProperty Department_MS -Enabled $true
Add-ADResourcePropertyListMember "Global Resource Property List" -Members Country
Add-ADResourcePropertyListMember "Global Resource Property List" -Members Department_MS

The next step is to create central access rules that define who can access resources. In this scenario the business rules are:

  • Finance documents can be read only by members of the Finance department.

  • Members of the Finance department can access only documents in their own country.

  • Only Finance Administrators can have Write access.

  • We will allow an exception for members of the FinanceException group. This group will have Read access.

  • The administrator and document owner will still have full access.

Or to express the rules with Windows Server 2012 constructs:

Targeting: Resource.Department Contains Finance

Access Rules:

  • Allow Read User.Country=Resource.Country AND User.department = Resource.Department

  • Allow Full control User.MemberOf(FinanceAdmin)

  • Allow Read User.MemberOf(FinanceException)

  1. In the left pane of the Active Directory Administrative Center, click Tree View, select Dynamic Access Control, and then click Central Access Rules.

  2. Right-click Central Access Rules, click New, and then click Central Access Rule.

  3. In the Name field, type Finance Documents Rule.

  4. In the Target Resources section, click Edit, and in the Central Access Rule dialog box, click Add a condition. Add the following condition:
    [Resource] [Department] [Equals] [Value] [Finance], and then click OK.

  5. In the Permissions section, select Use following permissions as current permissions, click Edit, and in the Advanced Security Settings for Permissions dialog box click Add.

    noteNote
    Use the following permissions as proposed permissions option lets you create the policy in staging. For more information on how to do this refer to the Maintain: Change and stage the policy section in this topic.

  6. In the Permission entry for Permissions dialog box, click Select a principal, type Authenticated Users, and then click OK.

  7. In the Permission Entry for Permissions dialog box, click Add a condition, and add the following conditions:
    [User] [country] [Any of] [Resource] [country]
    Click Add a condition.
    [And]
    Click [User] [Department] [Any of] [Resource] [Department]. Set the Permissions to Read.

  8. Click OK, and then click Add. Click Select a principal, type FinanceAdmin, and then click OK.

  9. Select the Modify, Read and Execute, Read, Write permissions, and then click OK.

  10. Click Add, click Select a principal, type FinanceException, and then click OK. Select the permissions to be Read and Read and Execute.

  11. Click OK three times to finish and return to Active Directory Administrative Center.

    PowerShell Logo Windows PowerShell equivalent commands

    The following Windows PowerShell cmdlet or cmdlets perform the same function as the preceding procedure. Enter each cmdlet on a single line, even though they may appear word-wrapped across several lines here because of formatting constraints.

    $countryClaimType = Get-ADClaimType country
    $departmentClaimType = Get-ADClaimType department
    $countryResourceProperty = Get-ADResourceProperty Country
    $departmentResourceProperty = Get-ADResourceProperty Department
    $currentAcl = "O:SYG:SYD:AR(A;;FA;;;OW)(A;;FA;;;BA)(A;;0x1200a9;;;S-1-5-21-1787166779-1215870801-2157059049-1113)(A;;0x1301bf;;;S-1-5-21-1787166779-1215870801-2157059049-1112)(A;;FA;;;SY)(XA;;0x1200a9;;;AU;((@USER." + $countryClaimType.Name + " Any_of @RESOURCE." + $countryResourceProperty.Name + ") && (@USER." + $departmentClaimType.Name + " Any_of @RESOURCE." + $departmentResourceProperty.Name + ")))"
    $resourceCondition = "(@RESOURCE." + $departmentResourceProperty.Name + " Contains {`"Finance`"})"
    New-ADCentralAccessRule "Finance Documents Rule" -CurrentAcl $currentAcl -ResourceCondition $resourceCondition 
    
    
    
    ImportantImportant
    In the above cmdlet example, the security identifiers (SIDs) for the group FinanceAdmin and users is determined at creation time and will be different in your example. For example, the provided SID value (S-1-5-21-1787166779-1215870801-2157059049-1113) for the FinanceAdmins needs to be replaced with the actual SID for the FinanceAdmin group that you would need to create in your deployment. You can use Windows PowerShell to look up the SID value of this group, assign that value to a variable, and then use the variable here. For more information, see Windows PowerShell Tip: Working with SIDs.

You should now have a central access rule that allows people to access documents from the same country and the same department. The rule allows the FinanceAdmin group to edit the documents, and it allows the FinanceException group to read the documents. This rule targets only documents classified as Finance.

  1. In the left pane of the Active Directory Administrative Center, click Dynamic Access Control, and then click Central Access Policies.

  2. In the Tasks pane, click New, and then click Central Access Policy.

  3. In Create Central Access Policy:, type Finance Policy in the Name box.

  4. In Member central access rules, click Add.

  5. Double-click the Finance Documents Rule to the add it to the Add the following central access rules list , and then click OK.

  6. Click OK to finish. You should now have a central access policy named Finance Policy.

    PowerShell Logo Windows PowerShell equivalent commands

    The following Windows PowerShell cmdlet or cmdlets perform the same function as the preceding procedure. Enter each cmdlet on a single line, even though they may appear word-wrapped across several lines here because of formatting constraints.

    New-ADCentralAccessPolicy "Finance Policy" Add-ADCentralAccessPolicyMember 
    -Identity "Finance Policy" 
    -Member "Finance Documents Rule"
    
    
  1. On the Start screen, in the Search box, type Group Policy Management. Double-click Group Policy Management.

    TipTip
    If the Show Administrative tools setting is disabled, the Administrative Tools folder and its contents will not appear in the Settings results.

    TipTip
    In your production environment, you should create a File Server Organization Unit (OU) and add all your file servers to this OU, to which you want to apply this policy. You can then create a group policy and add this OU to that policy..

  2. In this step, you edit the group policy object you created in Build the domain controller section in the Test Environment to include the central access policy that you created. In the Group Policy Management Editor, navigate to and select the organizational unit in the domain (contoso.com in this example): Group Policy Management, Forest: contoso.com, Domains, contoso.com, Contoso, FileServerOU.

  3. Right-click FlexibleAccessGPO, and then click Edit.

  4. In the Group Policy Management Editor window, navigate to Computer Configuration, expand Policies, expand Windows Settings, and click Security Settings.

  5. Expand File System, right-click Central Access Policy, and then click Manage Central access policies.

  6. In the Central Access Policies Configuration dialog box, add Finance Policy, and then click OK.

  7. Scroll down to Advanced Audit Policy Configuration, and expand it.

  8. Expand Audit Policies, and select Object Access.

  9. Double-click Audit Central Access Policy Staging. Select all three check boxes and then click OK. This step allows the system to receive audit events related to Central Access Staging Policies.

  10. Double-click Audit File System Properties. Select all three check boxes then click OK.

  11. Close the Group Policy Management Editor. You have now included the central access policy to the Group Policy.

For a domain’s domain controllers to provide claims or device authorization data, the domain controllers need to be configured to support dynamic access control.

  1. Open Group Policy Management, click contoso.com, and then click Domain Controllers.

  2. Right-click Default Domain Controllers Policy, and then click Edit.

  3. In the Group Policy Management Editor window, double-click Computer Configuration, double-click Policies, double-click Administrative Templates, double-click System, and then double-click KDC.

  4. Double-click KDC Support for claims, compound authentication and Kerberos armoring. In the KDC Support for claims, compound authentication and Kerberos armoring dialog box, click Enabled and select Supported from the Options drop-down list. (You need to enable this setting to use user claims in central access policies.)

  5. Close Group Policy Management.

  6. Open a command prompt and type gpupdate /force.

 

  Step Example

3.1

Assign the CAP to the appropriate shared folders on the file server.

Assign the central access policy to the appropriate shared folder on the file server.

3.2

Verify that access is appropriately configured.

Check the access for users from different countries and departments.

In this step you will assign the central access policy to a file server. You will log onto a file server that is receiving the central access policy that you created the previous steps and assign the policy to a shared folder.

  1. In Hyper-V Manager, connect to server FILE1. Log on to the server by using contoso\administrator with the password: pass@word1.

  2. Open an elevated command prompt and type: gpupdate /force. This ensures that your Group Policy changes take effect on your server.

  3. You also need to refresh the Global Resource Properties from Active Directory. Open an elevated Windows PowerShell window and type Update-FSRMClassificationpropertyDefinition. Click ENTER, and then close Windows PowerShell.

    TipTip
    You can also refresh the Global Resource Properties by logging on to the file server. To refresh the Global Resource Properties from the file server, do the following

    1. Logon to File Server FILE1 as contoso\administrator, using the password pass@word1.

    2. Open File Server Resource Manager. To open File Server Resource Manager, click Start, type file server resource manager, and then click File Server Resource Manager.

    3. In the File Server Resource Manager, click File Classification Management , right-click Classification Properties and then click Refresh.

  4. Open Windows Explorer, and in the left pane, click drive D. Right-click the Finance Documents folder, and click Properties.

  5. Click the Classification tab, click Country, and then select US in the Value field.

  6. Click Department, then select Finance in the Value field and then click Apply.

    noteNote
    Remember that the central access policy was configured to target files for the Department of Finance. The previous steps mark all documents in the folder with the Country and Department attributes.

  7. Click the Security tab, and then click Advanced. Click the Central Policy tab.

  8. Click Change, select Finance Policy from the drop-down menu, and then click Apply. You can see the Finance Documents Rule listed in the policy. Expand the item to view all of the permissions that you set when you created the rule in Active Directory.

  9. Click OK to return to Windows Explorer.

In the next step, you ensure that access is appropriately configured. User accounts need to have the appropriate Department attribute set (set this using Active Directory Administrative Center). The simplest way to view the effective results of the new policy is to use the Effective Access tab in Windows Explorer. The Effective Access tab shows the access rights for a given user account.

  1. In Hyper-V Manager, connect to server FILE1. Log on to the server by using contoso\administrator. Navigate to D:\ in Windows Explorer. Right-click the Finance Documents folder, and then click Properties.

  2. Click the Security tab, click Advanced, and then click the Effective Access tab.

  3. To examine the permissions for a user, click Select a user, type the user’s name, and then click View effective access to see the effective access rights. For example:

    • Myriam Delesalle (MDelesalle) is in the Finance department and should have Read access to the folder.

    • Miles Reid (MReid) is a member of the FinanceAdmin group and should have Modify access to the folder.

    • Esther Valle (EValle) is not in the Finance department; however, she is a member of the FinanceException group and should have Read access.

    • Maira Wenzel (MWenzel) is not in the Finance department and is not a member of either the FinanceAdmin or FinanceException group. She should not have any access to the folder.

    Notice that the last column named Access limited by in the effective access window. This column tells you which gates are effecting the person’s permissions. In this case, the Share and NTFS permissions allow all users full control. However, the central access policy restricts access based on the rules you configured earlier.

 

Number

Step

Example

4.1

Configure Device Claims for Clients

Set the group policy setting to enable device claims

4.2

Enable a claim for devices.

Enable the country claim type for devices.

4.3

Add a staging policy to the existing central access rule that you would like to modify.

Modify the Finance Documents Rule to add a staging policy.

4.4

View the results of the staging policy.

Check for Ester Velle’s permissions.

  1. Log on to DC1, open Group Policy Management, click contoso.com, click Default Domain Policy, right-click and select Edit.

  2. In the Group Policy Management Editor window, navigate to Computer Configuration, Policies, Administrative Templates, System, Kerberos.

  3. Select Kerberos client support for claims, compound authentication and Kerberos armoring and click Enable.

  1. Open Server DC1 in Hyper-V Manager and log on as contoso\Administrator, with the password pass@word1.

  2. From the Tools menu, open Active Directory Administrative Center.

  3. Click Tree View, expand Dynamic Access Control, double-click Claim Types, and double-click the country claim.

  4. In Claims of this type can be issued for the following classes, select the Computer check box. Click OK.
    Both the User and Computer check boxes should now be selected. The country claim can now be used with devices in addition to users.

The next step is to create a staging policy rule. Staging policies can be used to monitor the effects of a new policy entry before you enable it. In the following step, you will create a staging policy entry and monitor the effect on your shared folder.

  1. Open Server DC1 in Hyper-V Manager and log on as contoso\Administrator, with the password pass@word1.

  2. Open Active Directory Administrative Center.

  3. Click Tree View, expand Dynamic Access Control, and select Central Access Rules.

  4. Right-click Finance Documents Rule, and then click Properties.

  5. In the Proposed Permissions section, select the Enable permission staging configuration check box, click Edit, and then click Add. In the Permission Entry for Proposed Permissions window, click the Select a Principal link, type Authenticated Users, and then click OK.

  6. Click the Add a condition link and add the following condition:
    [User] [country] [Any of] [Resource] [Country].

  7. Click Add a condition again, and add the following condition: [And]
    [Device] [country] [Any of] [Resource] [Country]

  8. Click Add a condition again, and add the following condition. [And]
    [User] [Group] [Member of any] [Value](FinanceException)

  9. To set the FinanceException, group, click Add items and in the Select User, Computer, Service Account, or Group window, type FinanceException.

  10. Click Permissions, select Full Control, and click OK.

  11. In the Advance Security Settings for Proposed Permissions window, select FinanceException and click Remove.

  12. Click OK two times to finish.

PowerShell Logo Windows PowerShell equivalent commands

The following Windows PowerShell cmdlet or cmdlets perform the same function as the preceding procedure. Enter each cmdlet on a single line, even though they may appear word-wrapped across several lines here because of formatting constraints.

Set-ADCentralAccessRule
-Identity: "CN=FinanceDocumentsRule,CN=CentralAccessRules,CN=ClaimsConfiguration,CN=Configuration,DC=Contoso.com"
-ProposedAcl: "O:SYG:SYD:AR(A;;FA;;;BA)(A;;FA;;;SY)(A;;0x1301bf;;;S-1-21=1426421603-1057776020-1604)"
-Server: "WIN-2R92NN8VKFP.Contoso.com" 

noteNote
In the above cmdlet example, the Server value reflects the Server in the test lab environment. You can use the Windows PowerShell History Viewer to look up the Windows PowerShell cmdlets for each procedure you perform in Active Directory Administrative Center. For more information, see Windows PowerShell History Viewer

In this proposed permissions set, members of the FinanceException group will have Full Access to files from their own country when they access them through a device from the same country as the document. Audit entries are available in the File Servers security log when someone from the Finance department attempts to access files. However, security settings are not enforced until the policy is promoted from staging.

In the next procedure, you verify the results of the staging policy. You access the shared folder with a user name that has permissions based on the current rule. Esther Valle (EValle) is a member of FinanceException, and she currently has Read rights. According to our staging policy, EValle should not have any rights.

  1. Connect to the File Server FILE1 in Hyper-V Manager and log on as contoso\administrator, with the password pass@word1.

  2. Open a Command Prompt window and type gpupdate /force. This ensures that your Group Policy changes will take effect on your server.

  3. In Hyper-V Manager, connect to server CLIENT1. Log off the user who is currently logged on. Restart the virtual machine, CLIENT1. Then log on to the computer by using contoso\EValle pass@word1.

  4. Double-click the desktop shortcut to \\FILE1\Finance Documents. EValle should still have access to the files. Switch back to FILE1.

  5. Open Event Viewer from the shortcut on the desktop. Expand Windows Logs, and then select Security. Open the entries with Event ID 4818 under the Central Access Policy Staging task category. You will see that EValle was allowed access; however, according to the staging policy, the user would have been denied access.

If you have a central server management system such as System Center Operations Manager, you can also configuring monitoring for events. This allows Administrators to monitor the effects of central access policies before enforcing them.

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