高速访问多出口局域网对外资源的方法研究  

Research into High Accessing Speed to Resources of Exports LAN

作　　者：肖嵬[1] 缪春莹[1] 

机构地区：[1]重庆师范大学网络管理中心,重庆400047

出　　处：《重庆师范大学学报（自然科学版）》2008年第3期32-35,共4页Journal of Chongqing Normal University:Natural Science

基　　金：重庆市教委科研项目(No.KJ080828)

摘　　要：由于中国电信、中国网通、中国教育科研网等各大ISP的网间数据交换几乎都要经过北京互联网交换中心,因此不同的ISP网络之间始终存在交互瓶颈,很难实现不同网络的用户同时高速访问多出口局域网的对外资源。本文介绍了一些常用的解决方法,包括双域名模式、反向代理以及智能域名结合NAT技术的方式,并重点研究和阐述了第三种方法的实现,利用此方法有效地解决了本校对外资源不能同时被多个ISP网络用户高速访问的问题。The net data exchange between ISP, like CTC,CNC,CERNET, almost all pass through Beijing Internet Exchange Center, so the bottlenecks between different ISP networks always exist and high accessing speed to resources of exports LAN is hardly realized for the users of different networks. This article describes a few solutions to common use. The first way is Dual-mode domain. It requires other network service providers to apply for a domain name provided by the analytical services, campus network servers hosted by service providers and the use of the services to provide the public and IP. The second way is reverse agent. It is also known as the Web server acceleration. It is busy through the Web server and the Internet to increase between a high-speed Web server buffer （ that is, web reverse proxy server） to reduce the actual Web server load. This programme will place reverse proxy server in one or more frontend Web servers or directly at the entrance to the network. When the network users to access a Web server, the reverse is in fact the visit of the proxy server network IP, then reverse proxy server logic as Web server. The third approach is to .use smart domain technology with NAT. According to automatic client IP address to judgement, the network users access to education for internal analysis to education network server IP address, the network user access to public networks, analytical IP address and then configuration NAT server, the internal network and public network are connective in a dual-card structures, and the network are set in public network IP and internal network IP. At the same time in the card of public network connecting bundled on a number of public networks IP for internal server IP address conversion. The article mainly researches and explains the third way, and effectively solves the problem which the users of different ISP networks can not access to campus resources in high speed.

关 键 词：域名系统 智能域名解析 NAT IPTABLES 

分 类 号：TP393.07[自动化与计算机技术—计算机应用技术]