[in] Pointer to the name of the company that wrote the
[in] Pointer to a string representation for the version of the
[in] Reserved for future use. Passes a null pointer.
[in] The scope of the filter object, either array or
enterprise, as a value from the FwxScope enumerated type. This
parameter cannot be set to fwx_EnterpriseScope for a
stand-alone server or for ISA Server Standard Edition.
The filter was installed successfully.
The filter is already installed.
The Firewall service uses the CLSID of the filter when loading
it. The name, description, vendor, and version string are used for
displaying information about the filter in ISA Management, and are
not parsed or interpreted by the proxy.
On an array, InstallFilter should be called for each
array member. ISA keeps track of application filter installation
for each server and will alert users if a filter is installed on
some, but not all array members.