IFPCWebProxy::RemoveRedundantProxyAuthorization property

Article
08/27/2012

Applies to: desktop apps only

The RemoveRedundantProxyAuthorization property gets or sets a Boolean value that indicates whether the Forefront TMG Web proxy will remove all redundant Proxy-Authorization headers from requests passed to an upstream server when Basic authentication is used for authentication to the upstream server.

This property is read/write.

Syntax

HRESULT put_RemoveRedundantProxyAuthorization(
  VARIANT_BOOL fRemoveRedundantProxyAuthorization
);

HRESULT get_RemoveRedundantProxyAuthorization(
  VARIANT_BOOL *pfRemoveRedundantProxyAuthorization
);

' Data type: Boolean

Property RemoveRedundantProxyAuthorization( _
  ByVal fRemoveRedundantProxyAuthorization As VARIANT_BOOL, _
  ByVal pfRemoveRedundantProxyAuthorization As VARIANT_BOOL _
) As Boolean

Property value

Boolean value that indicates whether the Web proxy will remove all redundant Proxy-Authorization headers from requests passed to an upstream server.

Error codes

These property methods return S_OK if the call is successful; otherwise, they return an error code.

Remarks

This property is read/write. Its default value is False (VARIANT_FALSE in C++).

If requests sent by Web proxy clients are forwarded to an upstream proxy server by a Web chaining rule, Integrated authentication is required on the downstream Forefront TMG computer, and Basic authentication is used for authentication to the upstream server, random authentication requests and other error messages may be displayed in the Web browser on the client computer. This problem can be resolved by configuring the downstream proxy server to remove all redundant Proxy-Authorization headers from requests passed to the upstream server.

After the value of this property has been modified, the change must be written to persistent storage by calling the Save method, and the Microsoft Firewall service must be restarted for the change to take effect. For more information about restarting the Firewall service to apply changes, see Restarting Services After Configuration Changes.

Examples

This VBScript script sets the value of the RemoveRedundantProxyAuthorization property so that the Web proxy will remove all redundant Proxy-Authorization headers from requests passed to an upstream server when Basic authentication is used for authentication to the upstream server.

' Create the root object.
Dim root  ' The FPCLib.FPC root object
Set root = CreateObject("FPC.Root")
' Declare the other objects needed.
Dim isaArray     ' An FPCArray object
Dim webProxy     ' An FPCWebProxy object
' Get references to the array object
' and the Web proxy object. 
Set isaArray = root.GetContainingArray()
Set webProxy = isaArray.ArrayPolicy.WebProxy
' Configure the Web proxy to remove all redundant Proxy-Authorization
' headers from requests passed to an upstream server when Basic
' authentication is used for authentication to the upstream server.
webProxy.RemoveRedundantProxyAuthorization = True
' Save the new configuration with the fResetRequiredServices parameter set 
' to True so that the Firewall service will be restarted and the change
' will take effect. 
webProxy.Save True

Requirements

Minimum supported client	Windows Vista
Minimum supported server	Windows Server 2008 R2, Windows Server 2008 with SP2 (64-bit only)
Version	Forefront Threat Management Gateway (TMG) 2010
IDL	Msfpccom.idl
DLL	Msfpccom.dll

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