网络蠕虫传播模型的分析与仿真研究  

Analysis and Simulation Research of Network Worm Propagation Model

作　　者：查东辉[1] 

机构地区：[1]肇庆科技职业技术学院,广东肇庆526020

出　　处：《计算机仿真》2012年第2期124-127,共4页Computer Simulation

摘　　要：研究网络安全问题,网络蠕虫是当前网络安全的重要威胁。网络蠕虫传播途径多样化、隐蔽性强、感染速度快等特点。蠕虫模型以简单传染病模型进行传播,无法准确描述网络蠕虫复杂变化特点,网络蠕虫检测正确率比较低。为了提高网络蠕虫检测正确率,提出一种改进的网络蠕虫传播模型。在网络蠕虫传播模型引入动态隔离策略,有效切断网络蠕虫传播途径,采用自适应的动态感染率和恢复率,降低网络蠕虫造成的不利影响。仿真结果表明,相对于经典网络蠕虫传播模型,改进模型有效地加低了网络蠕虫的传播速度,提高网络蠕虫检测正确率和整个网络安全性,为网络蠕虫传播研究提供重要指导。Network worm is the main one threat to network security, and worms spread model is the most commonly used method. Because Internet worm transmission way has the characteristics of diversification, strong concealment, and high infection speed, the majority current worm spread models developed from the simple infectious disease model cannot accurately describe the changing rules of network worms and effectively detected network worms. In order to improve the network worm detection rate, this paper put forward an improved network worm＇s spread model. Dynamic isolation strategy was introduced into the network worms spread model to effectively cut off the spread ways of network worms. Adaptive dynamic infection and recovery rate were used to reduce the adverse impact of the network worms. The results of the simulation experiment show that compared with the classic network ＇worms spread model, the improved model can decrease the network worms of propagation speed and improve the network worm detection rate and the whole network＇s security, and it provides an important guidance for network worms spread research.

关 键 词：网络安全 网络蠕虫 传播模型 仿真 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]