摘要:从包过滤和应用代理防火墙技术入手,结合主机型和边界型防火墙的特点,对过滤网上不良数据的实现方法进行

了具体分析,总结不同方法的特点和不足,为基于防火墙的数据过滤技术的进一步研究打下基础。

关键词:包过滤 应用代理 SPI NDIS TIS/ FWTK-Abstract : packet filtering and application proxy firewall technology, and combined with the mainfr a me-based firewall and border-type characteristics, on the Internet filtering bad data for the implementation of specific analysis, summed up the characteristics of different methods and inadequate, Firewall-based data filtering technologies lay the foundation for further study. Keywords : packet filtering application proxy SPI NDIS TIS / TIS