基于时间压缩的流量加速回放方法  

Accelerated traffic replay method based on time compression

作　　者：王硕 柏军[1] 王佰玲[1] 张旭 刘红日 WANG Shuo;BAI Jun;WANG Bailing;ZHANG Xu;LIU Hongri(School of Computer Science and Technology,Harbin Institute of Technology(Weihai),Weihai 264209,China)

机构地区：[1]哈尔滨工业大学(威海)计算机科学与技术学院,山东威海264209

出　　处：《网络与信息安全学报》2021年第5期178-188,共11页Chinese Journal of Network and Information Security

基　　金：国家重点研发计划(2018YFB2004200)。

摘　　要：随着网络流量的激增,在虚拟环境下对流量进行回放面临着许多问题。为了满足回放过程中流量完整性和准确性的需求,提出了一种基于时间压缩的流量加速回放方法,实现了在虚拟环境下对真实网络流量的加速回放。该方法优先将时间间隔集合中最大的时间间隔进行压缩,对间隔较小的时间减少压缩,从而减少时间压缩造成的单位时间流量猛增现象,进而降低流量的丢包率。从丢包率、时间间隔误差、相似度3方面对其效果进行衡量。实验表明,与等比压缩方法相比,该方法在相似度上表现较差,但有着较低的丢包率和时间间隔误差。With the proliferation of network traffic,replaying traffic in a virtual environment faces many problems.In order to meet the requirements of traffic integrity and accuracy in the replay process,an accelerated traffic replay method based on time-compressed was proposed to achieve accelerated replay of real network traffic in a virtual environment.The method prioritized the compression of the largest time interval in the set of time intervals,and reduced the compression of the smaller intervals,thus reducing the traffic spike per unit time caused by time compression,and reducing the packet loss rate of traffic.The effect was measured in terms of packet loss rate,time interval error and similarity.The experiments show that this method has a lower packet loss rate and lower time interval error compared with the isometric compression method,although it performs worse in similarity.

关 键 词：网络安全 流量回放 最大优先 时间间隔 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]