Parameters

RBAC enables administrators to delegate control of specific management tasks in Microsoft Lync Server 2010. For example, instead of granting your organization’s help desk full administrator privileges you can give these employees very specific rights: the right to manage only user accounts; the right to manage only Enterprise Voice components; the right to manage only archiving and Archiving Server. In addition, these rights can be limited in scope: someone can be given the right to manage Enterprise Voice, but only in the Redmond site; someone else can be given the right to manage users, but only if those user accounts are in the Finance organizational unit (OU).

The Lync Server 2010 implementation of RBAC is based on two key elements: Active Directory security groups and Windows PowerShell cmdlets. When you install Lync Server 2010, a number of universal security groups, such as CsAdministrator, CsArchivingAdministrator, and CsViewOnlyAdministrator, are created for you. These universal security groups have a one-to-one correspondence with RBAC roles, which means that any user who is in the CsArchivingAdministrator security group has all the rights granted to the CsArchivingAdministrator RBAC role. In turn, the rights granted to an RBAC role are based on the cmdlets assigned to that role (cmdlets can be assigned to multiple RBAC roles). For example, suppose a role has been assigned the following cmdlets:

Get-ArchivingPolicy

Grant-ArchivingPolicy

New-ArchivingPolicy

Remove-ArchivingPolicy

Set-ArchivingPolicy

Get-ArchivingConfiguration

New-ArchivingConfiguration

Remove-ArchivingConfiguration

Set-ArchivingConfiguration

Get-CsUser

Export-CsArchivingData

Get-CsComputer

Get-CsPool

Get-CsService

Get-CsSite

The preceding list represents the only cmdlets that a user assigned a hypothetical RBAC role is allowed to run in a remote Windows PowerShell session. If the user tries to run the Disable-CsUser cmdlet, that command will fail because users assigned the hypothetical role do not have the right to run Disable-CsUser. This also applies to Lync Server Control Panel. For example, an Archiving Administrator cannot disable a user by using Lync Server Control Panel because Lync Server Control Panel abides by RBAC roles. (Any time you run a command in Lync Server Control Panel, you are actually calling a Windows PowerShell cmdlet.) If you are not allowed to run Disable-CsUser, it won’t matter whether you directly run that cmdlet from Windows PowerShell or if you indirectly run the cmdlet from within Lync Server Control Panel: the command will fail.

Note that RBAC applies only to remote management. If you are logged on to a computer running Lync Server 2010 and you open Lync Server Management Shell, RBAC roles will not be enforced. Instead, security is enforced primarily through the security groups RTCUniversalServerAdmins; RTCUniversalUserAdmins; and RTCUniversalReadOnlyAdmins.

When you install Lync Server 2010, Setup creates several built-in RBAC roles that cover common administrative areas such as voice administration, user management, and Response Group administration. These built-in roles cannot be modified in any way: you cannot add or remove cmdlets to the roles and you cannot delete these roles. (Any attempt to delete a built-in role will result in an error message.) However, you can use the built-in roles to create custom RBAC roles. These custom roles can then be modified by changing the administrative scopes; for example, you can limit the role to managing user accounts in a particular Active Directory OU.

Any custom role you create must be based on a template: an existing RBAC role. For example, to create a Dial-In Conferencing Administrator role you must effectively clone an existing RBAC role (for example, you might base the Dial-In Conferencing Administrator role on the existing Voice Administrator role). After the custom role has been created, you can then use Set-CsAdminRole to modify the properties of that new role.

Who can run this cmdlet: By default, members of the following groups are authorized to run the Set-CsAdminRole cmdlet locally: RTCUniversalServerAdmins. To return a list of all the RBAC roles this cmdlet has been assigned to (including any custom RBAC roles you have created yourself) run the following command from the Windows PowerShell prompt:

Get-CsAdminRole | Where-Object {$_.Cmdlets –match "Set-CsAdminRole"}

None.

Set-CsAdminRole does not return a value or object. Instead, the cmdlet configures instances of the Microsoft.Rtc.Management.WritableConfig.Settings.Roles.Role object.

-------------------------- Example 1 ------------------------

The preceding command adds a new OU (Portland) to the UserScopes property for the RBAC role RedmondVoiceAdministrators. To do this, the command includes the UserScopes parameter and the following parameter value: @{Add="OU:ou=Portland,dc=litwareinc,dc=com"}. This syntax adds the OU with the distinguished name "ou=Portland,dc=litwareinc,dc=com" to the OUs already in the UserScopes property.

-------------------------- Example 2 ------------------------

The command shown in Example 2 removes the Portland OU from the RBAC role RedmondVoiceAdministrators. To do this, the command includes the UserScopes parameter and the following parameter value: @{Remove="OU:ou=Portland,dc=litwareinc,dc=com"}. This syntax deletes the OU with the distinguished name "ou=Portland,dc=litwareinc,dc=com" from the collection of OUs already in the UserScopes property.

-------------------------- Example 3 ------------------------

In Example 3, a new site (one with the SiteId Redmond) is added to the ConfigScopes property for the RBAC role RedmondVoiceAdministrators. To do this, the command includes the ConfigScopes parameter and the following parameter value: @{Add="OU:ou=Portland,dc=litwareinc,dc=com"}. This syntax adds the Redmond site to any items already in the ConfigScopes property.

-------------------------- Example 4 ------------------------

The command shown in Example 4 removes the Redmond site from the RBAC role RedmondVoiceAdministrators. To do this, the command includes the ConfigScopes parameter and the following parameter value: @{Remove="site:Redmond"}. This parameter deletes the Redmond site from the collection of items already in the ConfigScopes property. Note that this command will fail if the Redmond site is the only site in the ConfigScopes property. If you are removing the only site in the ConfigScopes property you should use a command similar to this, which replaces all the items in ConfigScopes with the Global property:

Set-CsAdminRole -Identity "RedmondVoiceAdministrators" -ConfigScopes @{Replace="Global"}