PreSharedIPSecKey Property of the IFPCVpnConfiguration Interface

The PreSharedIPSecKey property gets or sets the preshared IPsec key for incoming L2TP connections. A preshared key is a string of text that is configured on both the VPN client and the VPN server. A preshared key provides a relatively weak authentication method. Therefore, we recommend using it only in the interim when your public key infrastructure (PKI) is being deployed to obtain computer certificates, or when a preshared key is required by VPN clients.

HRESULT put_PreSharedIPSecKey(
	BSTR bstrKey
HRESULT get_PreSharedIPSecKey(
	BSTR* pbstrKey



Pointer to a BSTR that is set on return to a string value specifying the IPsec key for incoming L2TP connections.


BSTR that specifies the IPsec key for incoming L2TP connections.

Return Value

These property methods return S_OK if the call is successful; otherwise, they return an error code.
[Visual Basic]
Property PreSharedIPSecKey As String

Property Value

String value that specifies the IPsec key for incoming L2TP connections.


This property is read/write. Its default value is an empty string.

The preshared key will be used only if the AllowCustomIPSecPolicyForL2TP property is set to True (VARIANT_TRUE in C++).


Client Requires Windows Vista or Windows XP.
Server Requires Windows Server 2008.
Version Requires Forefront Threat Management Gateway (TMG).

Declared in Msfpccom.idl.


Requires Msfpccom.dll.

See Also


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Build date: 11/30/2009

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