一些典型P2P文件分享应用及其安全问题综述

摘要

P2P architecture is widely used in file sharing systems.Different from the traditional server-client architecture,P2P architecture is decentralized,which provides a scalable,low-cost,anony-mous,and fault-tolerance mechanism to the P2P file sharing system.In this paper,starting from the sharing and applications of some popular P2P files,the history,some security issues and simple protection methods of P2P network are introduced.%P2P架构被广泛应用于文件分享系统中。有别于传统的服务器-客户端架构，P2P架构是去中心化的，这使得P2P文件分享系统具有成本低、可扩展、匿名性好、容错性强等特点。但与此同时，P2P网络也有很多新的安全问题。从几个大规模流行的 P2P文件分享应用入手，介绍了P2P网络的历史、一些安全性问题以及简单的防范手段。