This paper introduces TDI and TDI-based filtering theory.The monitoring of application access to network is implemented by TDI filtering driver program,and test results prove its validity.

• 介绍TDI及TDI过滤原理,通过采用TDI过滤技术,实现了对应用程序访问网络的监控,并通过测试验证监控的有效性。