互联网关键自治系统的地理分布特性分析  

Research on Geographical Distributions of Critical ASes of the Internet

作　　者：牛力人 刘宇靖[1] 彭伟[1] 王东霞[2] 

机构地区：[1]国防科技大学计算机学院,湖南长沙410073 [2]北京系统工程研究所,信息系统安全技术国家重点实验室,北京100101

出　　处：《信息安全与技术》2015年第4期22-26,共5页

基　　金：国家自然科学基金项目[59637050]

摘　　要：以Internet为代表的互联网在逻辑上是由若干不同的自治系统(Autonomous System,AS)构成。找到关键的自治系统的地理位置,并对其分布情况进行科学分析,对评估网络安全性和抗毁性研究等具有重要意义。文章通过基于介数的关键AS识别方法和基于连接关系数据的互联网交换点(Internet Exchange Point,IXP)识别方法,对互联网路由控制平面和拓扑物理层的数据进行分析,识别出较为关键的AS,以及关键AS之间的IXP。其地理分布结果显示,互联网中关键AS和关键IXP符合幂律分布,即极少数地区成为了影响整个互联网安全和稳定的关键地区。The Internet is logical y composed of several dif erent autonomous systems (AS). It is important to find the critical autonomous systems and analyze their geographical distributions for assessing the security and survivability of the network. According to the method of key AS identification based on betweenness centrality and the method of IXP identification based on the connecting data of the Internet, this paper identifies the most critical ASes and the IXPs between them by analyzing the Internet routing control plane and the physical topology data. The results show that the most critical ASes and IXPs between them fol ow the power-law distribution geographical y, which means that a very few areas become the key areas af ecting the security and stability of the entire Internet.

关 键 词：自治系统 互联网交换点 介数 幂律分布 地理分布 

分 类 号：TP393.08[自动化与计算机技术—计算机应用技术]