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1.
分布式拒绝服务攻击手段及其防范技术研究   总被引:1,自引:1,他引:1  
严毅宁葵  李陶深 《微机发展》2004,14(9):81-83,86
分布式拒绝服务(DDoS)的攻击严重威胁着互联网的安全。文章通过对DDoS攻击原理以及DDoS攻击行为的分析,针对其攻击手段以及攻击工具的特征,提出了切实可行的检测方法和防御手段,以减轻攻击所产生的影响。在深入剖析现阶段DDoS攻击的防护手段、策略的基础上,给出一个DDoS攻击预警及入侵防御系统(IPS)的体系结构,该体系结构从主动防御的技术角度出发,同时提出用硬件技术实现设备的高性能来抵抗DDoS攻击的目的。  相似文献   

2.
分布式拒绝服务(DDoS)的攻击严重威胁着互联网的安全.文章通过对DDoS攻击原理以及DDoS攻击行为的分析,针对其攻击手段以及攻击工具的特征,提出了切实可行的检测方法和防御手段,以减轻攻击所产生的影响.在深入剖析现阶段DDoS攻击的防护手段、策略的基础上,给出一个DDoS攻击预警及入侵防御系统(IPS)的体系结构,该体系结构从主动防御的技术角度出发,同时提出用硬件技术实现设备的高性能来抵抗DDoS攻击的目的.  相似文献   

3.
Web服务中基于流量监控的DDoS攻击防范机制   总被引:2,自引:0,他引:2       下载免费PDF全文
提出一种基于流量监控的针对Web服务的DDoS攻击防范机制。使用Linux内核的安全选项、Linux虚拟服务器、iptables防火墙以及基于类的排队等技术搭建防范DDoS攻击的Web服务器系统环境,设计、实现了流量监控器和分析工具来检测可能发生的DDoS攻击,并降低其危害。实际测试表明,该机制能有效检测和防范常见的针对Web服务的DDoS攻击。  相似文献   

4.
基于网络连接分析的DDoS攻击检测模型   总被引:6,自引:0,他引:6  
吴庆涛  邵志清  钱夕元 《计算机工程》2006,32(10):135-136,166
分布式拒绝服务(Distmuted Denial of Service,DDoS)攻击是当前网络安全的主要威胁之一。通过对网络连接特征的分析,提出了一种DDoS攻击检测模型。该模型利用DDoS早期攻击阶段的固有特性,从网络连接数据的统计分析中探寻系统正常行为的分布规律并确定DDoS攻击检测阈值。最后,通过模拟攻击实验验证了检测模型的有效性。实验结果表明,该模型能快速有效地实现对早期DDoS攻击的检测,并对其他网络安全检测研究具有一定的指导意义。  相似文献   

5.
DDoS攻击技术的新发展和对策   总被引:11,自引:1,他引:11  
DDoS攻击技术随着时代的发展也在不断进步,本文在分析DDoS攻击技术的基本原理和最新发展的基础上,提出了基于多方位防范DDoS攻击思想的三层防御体系。为防御新型的DDoS攻击提供了新的对策和思路。  相似文献   

6.
DDoS 攻击检测和控制方法   总被引:3,自引:0,他引:3  
张永铮  肖军  云晓春  王风宇 《软件学报》2012,23(8):2058-2072
分布式拒绝服务(distributed denial of service,简称DDoS)攻击是当今互联网的重要威胁之一.基于攻击包所处网络层次,将DDoS攻击分为网络层DDoS攻击和应用层DDoS攻击,介绍了两类攻击的各种检测和控制方法,比较了处于不同部署位置控制方法的优劣.最后分析了现有检测和控制方法应对DDoS攻击的不足,并提出了DDoS过滤系统的未来发展趋势和相关技术难点.  相似文献   

7.
本文介绍了DDoS攻击的原理和传统DDoS检测防御系统的缺点,提出了一种全面、主动、有效的DDoS防御模型,引入了移动Agent技术、Honeypot技术以及MVP技术。本模型的移动Agent技术真正、有效地实现了分布式检测;Honeypot实现主动防御,诱导攻击进入蜜罐主机,保护真实的网络环境;MVP技术则有效地分离了合法流量和恶意流量。该模型部署和操作简单,具有良好的工程应用前景。  相似文献   

8.
洪敬风  段海新  姚淑珍 《计算机工程》2006,32(8):181-182,231
提出了一种利用被动监听Overlay网络进行DDoS攻击源追踪的新方法。它能够跨越多个自治系统追踪一个大规模DDoS攻击的多个攻击源。基于该方案,设计和实现了一个IP源回溯系统:SnifferTrack。描述了它的体系结构和组成、追踪过程和算法。最后,提出了SnifferTrack系统中的几个局限以及进一步的工作。  相似文献   

9.
本文通过深入了解DDoS攻击的原理和实施过程,结合DDoS攻击检测方法的最新研究情况,对DDoS攻击检测技术进行系统的分析和研究,提出了基于回推机制的防御措施,最后,为网络入侵检测机制提出了一种新的思路。  相似文献   

10.
本文系统地分析了DDoS攻击的实现原理以及DDoS的攻击方法,提出了详细可行的DDoS攻击防范策略。  相似文献   

11.
Abstract This paper describes an approach to the design of interactive multimedia materials being developed in a European Community project. The developmental process is seen as a dialogue between technologists and teachers. This dialogue is often problematic because of the differences in training, experience and culture between them. Conditions needed for fruitful dialogue are described and the generic model for learning design used in the project is explained.  相似文献   

12.
European Community policy and the market   总被引:1,自引:0,他引:1  
Abstract This paper starts with some reflections on the policy considerations and priorities which are shaping European Commission (EC) research programmes. Then it attempts to position the current projects which seek to capitalise on information and communications technologies for learning in relation to these priorities and the apparent realities of the marketplace. It concludes that while there are grounds to be optimistic about the contribution EC programmes can make to the efficiency and standard of education and training, they are still too technology driven.  相似文献   

13.
融合集成方法已经广泛应用在模式识别领域,然而一些基分类器实时性能稳定性较差,导致多分类器融合性能差,针对上述问题本文提出了一种新的基于多分类器的子融合集成分类器系统。该方法考虑在度量层融合层次之上通过对各类基多分类器进行动态选择,票数最多的类别作为融合系统中对特征向量识别的类别,构成一种新的自适应子融合集成分类器方法。实验表明,该方法比传统的分类器以及分类融合方法识别准确率明显更高,具有更好的鲁棒性。  相似文献   

14.
Development of software intensive systems (systems) in practice involves a series of self-contained phases for the lifecycle of a system. Semantic and temporal gaps, which occur among phases and among developer disciplines within and across phases, hinder the ongoing development of a system because of the interdependencies among phases and among disciplines. Such gaps are magnified among systems that are developed at different times by different development teams, which may limit reuse of artifacts of systems development and interoperability among the systems. This article discusses such gaps and a systems development process for avoiding them.  相似文献   

15.
This paper presents control charts models and the necessary simulation software for the location of economic values of the control parameters. The simulation program is written in FORTRAN, requires only 10K of main storage, and can run on most mini and micro computers. Two models are presented - one describes the process when it is operating at full capacity and the other when the process is operating under capacity. The models allow the product quality to deteriorate to a further level before an existing out-of-control state is detected, and they can also be used in situations where no prior knowledge exists of the out-of-control causes and the resulting proportion defectives.  相似文献   

16.
Going through a few examples of robot artists who are recognized worldwide, we try to analyze the deepest meaning of what is called “robot art” and the related art field definition. We also try to highlight its well-marked borders, such as kinetic sculptures, kinetic art, cyber art, and cyberpunk. A brief excursion into the importance of the context, the message, and its semiotics is also provided, case by case, together with a few hints on the history of this discipline in the light of an artistic perspective. Therefore, the aim of this article is to try to summarize the main characteristics that might classify robot art as a unique and innovative discipline, and to track down some of the principles by which a robotic artifact can or cannot be considered an art piece in terms of social, cultural, and strictly artistic interest. This work was presented in part at the 13th International Symposium on Artificial Life and Robotics, Oita, Japan, January 31–February 2, 2008  相似文献   

17.
Although there are many arguments that logic is an appropriate tool for artificial intelligence, there has been a perceived problem with the monotonicity of classical logic. This paper elaborates on the idea that reasoning should be viewed as theory formation where logic tells us the consequences of our assumptions. The two activities of predicting what is expected to be true and explaining observations are considered in a simple theory formation framework. Properties of each activity are discussed, along with a number of proposals as to what should be predicted or accepted as reasonable explanations. An architecture is proposed to combine explanation and prediction into one coherent framework. Algorithms used to implement the system as well as examples from a running implementation are given.  相似文献   

18.
《计算机科学》2007,34(4):148-148
Recent years have seen rapid advances in various grid-related technologies, middleware, and applications. The GCC conference has become one of the largest scientific events worldwide in grid and cooperative computing. The 6th international conference on grid and cooperative computing (GCC2007) Sponsored by China Computer Federation (CCF),Institute of Computing Technology, Chinese Academy of Sciences (ICT) and Xinjiang University ,and in Cooperation with IEEE Computer Soceity ,is to be held from August 16 to 18, 2007 in Urumchi, Xinjiang, China.  相似文献   

19.
This paper provides the author's personal views and perspectives on software process improvement. Starting with his first work on technology assessment in IBM over 20 years ago, Watts Humphrey describes the process improvement work he has been directly involved in. This includes the development of the early process assessment methods, the original design of the CMM, and the introduction of the Personal Software Process (PSP)SM and Team Software Process (TSP){SM}. In addition to describing the original motivation for this work, the author also reviews many of the problems he and his associates encountered and why they solved them the way they did. He also comments on the outstanding issues and likely directions for future work. Finally, this work has built on the experiences and contributions of many people. Mr. Humphrey only describes work that he was personally involved in and he names many of the key contributors. However, so many people have been involved in this work that a full list of the important participants would be impractical.  相似文献   

20.
正The 34th Chinese Control Conference and SICE Annual Conference 2015(CCCSICE2015)is organized by the Technical Committee on Control Theory(TCCT)of Chinese Association of Automation(CAA)and the Society of Instrument and Control Engineers(SICE)of Japan,and locally organized by Hangzhou Dianzi University(HDU).  相似文献   

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