Microsoft Internet Security and Acceleration Server 2000

IFWXFilter

The Firewall service uses the IFWXFilter interface to load and initialize a filter and to create session filters. An IFWXFilter interface is called for each filter that is in ISA storage and is enabled.

Methods in Vtable Order

IUnknown Methods	Description
QueryInterface	Returns pointers to supported interfaces.
AddRef	Increments the reference count.
Release	Decrements the reference count.

IFWXFilter Methods	Description
FilterInit	Called by the Firewall service when the filter is starting.
FilterShutdown	Called by the Firewall service when the service is stopping.
AttachToSession	Called by the Firewall service when it determines that a session filter is needed.

Implementation

This interface is implemented by the application filter.

Remarks

This is the interface that is used to create the filter object; therefore, every filter must initially implement this interface. Only one instance of the IFWXFilter object is created per filter.

Requirements

  Windows NT/2000: Requires Windows 2000.
  Version: Requires ISA Server 2000.
  Header: Wspfwext.idl.