多数包过滤技术没有满足所有的安全要求。
The Research & Realization of Packet Filtering Technology in Individual Security Defense System;
多数包过滤技术没有满足所有的安全要求。
Research of Worm Filtering Technology Based on Internet Security Gateway;
基于内容的IP包过滤技术涉及到操作系统的内核。
Technology of IP Filter Based on IP content relates to system kernels.
基于内容的IP包过滤技术涉及到操作系统的内核态技术。
The technology of packet filter based on IP content is related to the kernel-mode of Window operation system.
本文研究的重点是个人安全防御系统中包过滤技术的设计与实现。
The researching key point in the paper is the design and realization of the packet filter technology in individual security defense system.
包过滤技术实现简单，网络处理性能很高，但缺乏对应用层的保护。
Packet filter technology can be implemented easily and has high performance on network process, but it has no ability to provide protection to application.
把决策树分类器引入包过滤技术当中，改变了传统的顺序检索包过滤的方法。
Introducing the decision tree classifiers into packet filtering technology, it changes the conventional method searching the packet orderly.
对文件传输协议进行了分析，在此基础上介绍了针对FTP服务的包过滤技术和代理技术。
This paper analyzes FTP (File Transfer Protocol) firstly, and then introduces packet filter technology and proxy technology for FTP.
此外，本文还分析了数据包过滤技术的另一个问题：规则冲突，给出了一个规则冲突的理论分析和查找算法。
In addition, the paper has analyzed another problem in the data packet filter technical: rule conflict, and has produced the rule conflict theory research and the searching algorithm.
流过滤技术应运而生，它结合了包过滤技术和代理技术的优点，以包过滤的外部形态提供对应用层的保护能力。
Stream filter technology has emerged, which combines the merits of packet filter and proxy technology and provides protection to application in the form of packet filter.
流过滤技术是对包过滤、状态检测及应用代理的一种“融合”，实现了高性能、可扩展、透明的对应用层协议的保护。
Flow filtration technology is a kind of "integration" which compounds packet filtration, state detection and the agent of application.
智能邮件信息处理基于数据包过滤和协议分析处理技术，实现了邮件加密，签名的智能化。
The intelligent E-mail processing, which is based on the packet filtering and protocol analysis, makes the encryption and signature intelligent.
随着网络规模的不断扩大与应用技术的不断进步，越来越多的业务需要对数据包进行实时、快速的分类过滤。
With an increasing scale of the network and the development of the application technology, more and more services need data packets classification and filter for real time and speediness.
针对状态检测技术中状态类型单一、包过滤逻辑不够灵活的缺点，提出一种改进的有状态模型，该模型对有状态技术中状态与状态更新逻辑两个概念进行了扩展与深化。
Based on that, we explore its defects and its possible development. After that, the concept 'State' and 'State Update Logics' are extended and a more general stateful firewall model is presented.
针对状态检测技术中状态类型单一、包过滤逻辑不够灵活的缺点，提出一种改进的有状态模型，该模型对有状态技术中状态与状态更新逻辑两个概念进行了扩展与深化。
Based on that, we explore its defects and its possible development. After that, the concept 'State' and 'State Update Logics' are extended and a more general stateful firewall model is presented.
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