ISCAS OpenIR
用优化的正则表达式引擎进行快速网络流分类
Alternative TitleOptimized Regular Expression Matching Engine for Fast Network Traffic Classification
王建敏; 曾凡平; 王健康
2015
Source小型微型计算机系统
ISSN1000-1220
Volume36Issue:12Pages:2690-2695
English Abstract依赖于正则表达式匹配的深度包检测技术因准确率高成为网络流分类广泛使用的技术. 为了能在线性时间内对网络流进行快速分类,需采用时间高效的确定性有限自动机(DFA)匹配引擎,但DFA存在空间爆炸问题,无法满足实际需求. 为了解决这个问题,本文从DFA中每个状态在不同的输入字符转换下到达的目的状态特性出发,提出了一种基于默认目的状态和位图技术的DFA压缩算法(对应 的自动机模型称为DBDFA), 该算法能够将有着相同目的状态的多条转移边压缩为只需一个默认目的状态或只需一个时空高效的位图. 实验表明,DBDFA能达到平均99% 的压缩效率,优于目前大多数的DFA压缩技术,且压缩后的总体匹配效率是原有DFA的3 ~ 5倍,这是目前大部分的压缩技术所不能达到的.
Indexed TypeCSCD
AbstractDeep Packet Inspection which relies on regular expression matching has become widely used network traffic classification technology due to its high accuracy. Time-efficient Deterministic Finite Automata (DFA) is usually preferred for fast traffic classification at line rate. However,DFA cannot meet the actual needs because of space explosion problem. In order to address this,by analyzing the destination state characteristics from different transitions,this paper proposes a DFA compression algorithm based on Default destination state and Bitmap technology,called DBDFA,which can compress multiple different transitions that has the same destination state into just a default destination state or a space-efficient bitmap. Experimental results show that DBDFA achieves space savings of99% over the original DFA,better than most state-of-the-art DFA compression techniques. More importantly,DBDFA's matching efficiency is three to five times the original DFA,which is generally other compression techniques can not achieve.
Keyword流量分类 正则表达式 特征匹配 默认目的状态 位图
Department王建敏, 中国科学技术大学计算机科学与技术学院, 合肥, 安徽 230026, 中国;王健康, 中国科学技术大学计算机科学与技术学院, 合肥, 安徽 230026, 中国;曾凡平, 中国科学技术大学计算机科学与技术学院, 中国科学院软件研究所计算机科学国家重点实验室;;安徽省计算与通讯软件重点实验室, 合肥, 安徽 230026, 中国;
Language中文
CSCD IDCSCD:5588653
Content Type期刊论文
URIhttp://ir.iscas.ac.cn/handle/311060/17385
Collection中国科学院软件研究所
Recommended Citation
GB/T 7714
王建敏,曾凡平,王健康. 用优化的正则表达式引擎进行快速网络流分类[J]. 小型微型计算机系统,2015,36(12):2690-2695.
APA 王建敏,曾凡平,&王健康.(2015).用优化的正则表达式引擎进行快速网络流分类.小型微型计算机系统,36(12),2690-2695.
MLA 王建敏,et al."用优化的正则表达式引擎进行快速网络流分类".小型微型计算机系统 36.12(2015):2690-2695.
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