Web (ISAPI) filters detect and process HTTP events, and can extend the functionality of the Web proxy . By using the Internet Server application programming interface (API), Forefront TMG supports the Web filter extensibility model, which lets third-party developers examine and change the HTTP request and response flow. Forefront TMG does not support ISAPI extensions.
For more information about Forefront TMG support of Web filters, see Developing Web (ISAPI) Filters for Forefront TMG.
Build date: 11/30/2009
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