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Defines the security provider and realm for the server or pool.

The following syntax is simplified from Managed Object Format (MOF) code and includes all inherited properties. Properties are listed in alphabetic order, not MOF order.


class MSFT_SIPProxySecuritySetting
  [key] string Backend;
  string[] ClientToProxyAuth;
  boolean DefaultRealm;
  [key] string InstanceID;
  string Realm;


This class does not define any methods.


The MSFT_SIPProxySecuritySetting class has the following properties.


Data type: [key] string

Access type: Read-only

Must be empty when accessing data from Edge Server or Proxy Server roles. Required when accessing data from any role that belongs to a pool.

The computer name (either the FQDN or NetBIOS name) and SQL Server instance name of the Office Communications Server 2007, back-end database (configuration data is stored in the same SQL instance as user data, but in a different database). Indicates where this class is stored, which varies depending on the server role.

Server Role

Acceptable Values

Enterprise Edition


Standard Edition


Access Edge Server and Forwarding Proxy

Empty string


Data type: string[]

Access type: Read/Write

Required. Specifies the security providers supported by the proxy.

The value of this property is not case-sensitive. This array must contain one or more of the following string values.




The Kerberos security provider is supported.


The NTLM security provider is supported.

The default is an array containing both values ({"Kerberos","NTLM"}).


Data type: boolean

Access type: Read/Write

Required. Specifies whether the security credentials are supplied by the default realm or the realm specified by the Realm property.

If true, the realm for the supplied security credentials is the default realm: "SIP Communications Service". If false, the realm is specified in the Realm property.

The default value is true.


Data type: [key] string

Access type: Read-only

Required. A GUID value that uniquely identifies an instance of this class.

The GUID must be encapsulated between the "{" and "}" braces; for example: "{01234567-0123-4567-89AB-CDEF01234567}".


Data type: string

Access type: Read/Write

Optional. The realm in which these security credentials are accepted.

The realm must be the same for all servers in the Office Communications Server deployment.

The value of this property is case-sensitive. The maximum length of the string is 255 characters. The value cannot be NULL if DefaultRealm is false.

The default value is NULL.


This class gets and sets information at the following level(s): WMI, SQL.

If this class is installed on a server whose role has "Pool" scope, the scope of this class is "Pool" and settings are stored in SQL. In this case, only one instance of this class can be present in the pool. For a list of server roles and their corresponding WMI class scopes, see WMI Class Management Scopes and Roles.

Instances of this class support the following interface methods:

Provider::EnumerateInstances(); Provider::GetObject(); Provider::PutInstance();

Where PutInstance() supports the following flag(s):



Server: Installed on computers serving the following role(s): Administrative Tools Server, Access Edge Server, Front End Server, Proxy Server.Namespace: Defined in \root\cimv2.