|Microsoft Internet Security and Acceleration Server 2000|
This section describes the basic steps required to create an application filter. This section is intended for developers who are familiar with Microsoft® Visual C++® and COM. For performance reasons, application filter interfaces are not automation interfaces and filter objects are best implemented as free-threaded objects. Therefore, Visual Basic, Java and scripting languages are not suitable for creating application filters.
Because application filters work with the Firewall service, and the Firewall service works with Windows Sockets (Winsock), knowledge of Winsock is also helpful. Information about Winsock can be found in MSDN.
To become familiar with the filter-development process, the following approach is recommended:
This section contains the following topics: