DDoS攻击防御策略研究

在网络攻击中,分布式拒绝服务攻击（Distributed Denial of Service,DDoS）因其强大的破坏力而引起了世人高度的重视。本文目标是对DDoS攻击防护措施以及防御DDoS攻击技术的研究,最后阐述了DDoS攻击的发展趋势。     

DDoS攻击与防范

伴随着网络的发展,拒绝服务攻击经历了DOS到DDoS的发展。介绍了DDoS攻击的概念、DDoS攻击原理和防范方法。指出:DDoS攻击在TCP连接原理上是合法的,除非TCP协议重新设计,明确定义DDoS和其他正常请求有何不同,否则不能完全阻DDoS攻击。     

DDoS攻击剖析及防御对策

文章通过对DDoS攻击原理的剖析,分析了DDoS攻击使用的常用工具,讨论检测DDoS的方法,最后提出DDoS的攻击防御对策。     

分布式拒绝服务攻击（DDoS）原理及防范

21世纪以来，黑客们采用了一种新的十分难以防范的分布式拒绝服务攻击（DDoS），给很多知名网站和internet带来巨大的损失。本文从概念、攻击原理、攻击现象、攻击方式介绍了这种攻击方法，以及防御DDoS的措施。     

DDoS攻击及相应防御方法的分类

主要叙述了DDoS攻击的类型并且对相应的防御方法作了分类,描述了每一种攻击的特征和相应的防御策略,并对每一个策略的优缺点作了分析。通过对目前所有的DDoS攻击技术和防御方法作一次全面的总结和分类,目的是更好地理解DDoS攻击,设计出更有效的防御方法和工具。     

DDoS攻击的原理及解决方法

美国的Yahoo!和CA根服务器遭受攻击是由于分布式拒绝服务攻击(DDoS)造成的。DDoS攻击的原理是通过伪造超过服务器处理能力的请求数据,造成服务器响应阻塞,使正常的用户请求得不到应答,而目前的解决方法是对出口的数据包进行检查,防止伪IP的出现。     

Web应用防火墙中DDoS防范的设计与实现

分析DDoS攻击的形成及特征,对各种拒绝服务攻击的实现算法进行对比分析。重点研究可用于检测和防御基于HTTP协议的DDoS攻击的方法,消除或者减少HTTP-Flood攻击对Web服务器的影响,从而达到保护Web服务器的目的。最后,将这种检测防御方法移植到Web应用防火墙（WAF）的DDoS模块中,实现Web服务器防范DDoS攻击的最终解决方案。     

Linux环境下基于正则表达式的DDoS防御研究

在拒绝服务攻击（DoS）基础上产生的分布式拒绝服务攻击（DDos）已成为当今Internet面临的主要威胁之一。在分析攻击原理的基础上,提出了一种Linux系统下基于正则表达式的DDoS防御方法。     

安全资讯

德国政府招电脑高手 研发反恐病毒；恐怖组织号召DDoS攻击开展大规模网圣战;MySpace多个网页被黑;Mozilla将修复FireFox高危漏洞;荷兰17岁男孩盗窃网上虚拟家具被拘捕.     

前馈神经网络算法在DDoS检测中的应用

分布式拒绝服务（DDoS）攻击由于其攻击的隐蔽性和分布性而难于检测和防御,成为当今网络安全领域最难解决的问题之一。文章本文利用前馈神经网络理论和方法建立了DDOS检测模型。经过实验结果证明,建立的神经网络模型预测精度高,泛化能力强,具有很好的应用前景。     

传统砚形出新意

本文主要对传统砚形在现今如何雕刻、如何发展进行了阐述。对传统砚形的制砚应传承其使用功能,但对其艺术价值应予以提升,并具体从刻物如何显其境,刻人如何现其情的角度,具体说明了如何提升砚雕的艺术价值。     

浅谈PHP中RAR压缩文件的处理

当前我们身处一个信息爆炸的时代,如何依靠网络高效、便捷的传递和利用信息,是当今社会的重要研究课题之一。本文主要针对PHP网络编程语言如何对网络中的RAR压缩文件进行创建、解压和转换等问题进行研究,得出一些较为实用的解决方法,并详细阐述了如何限制上传文件的大小和判断上传文件是否符合要求的方法。     

真空输送管静电危害的消除或利用

针对一些冶炼厂在使用橡胶吸水管或者PVC塑料钢丝管做真空氧粉输送管中,所产生的静电对真空输送工会造成电击伤害现象,文章从静电产生的原因进行深入分析,并对如何消除它以及作为一种生产过程中伴生出来的二次能源,如何进行合理的利用它,从而即达到消除危害,又可再生利用,变废为宝的目的。     

On the conclusive validation of symbol manipulative processes (How do you know it has to work?)

This paper discusses the ramifications of the problem of proving that the design of a symbol manipulating processor conclusively does what the designer intended. More specifically, it explores such questions as: (1) What different interpretations can be given to the expression “the intent of the process”? (2) Does the process, or should the process end? In either event, how do we prove it? (3) If the process does end, how do we prove that it does what was intended? This question may be meaningful even if the process does not end. (4) Is there a whole class of processes that stand or fall together? Can we adapt our proof of conclusiveness to cover the whole class? (5) Do the processes of the class yield the same or different results, and whichever it is, how do we prove it? The example of formal differentiation from the calculus is used to illustrate these problems; and question number four is developed in detail to illustrate the mixture of mathematical, logical, linguistic, computer science, procedural and even psychological insights involved. References are given for the methods of attack on the other questions.     

Contextual factors affecting the utility of surrogates within exploratory search

In this paper we investigate how information surrogates might be useful in exploratory search and what information it is useful for a surrogate to contain. By comparing assessments based on artificially created information surrogates, we investigate the effect of the source of information, the quality of an information source and the date of information upon the assessment process. We also investigate how varying levels of topical knowledge, assessor confidence and prior expectation affect the assessment of information surrogates. We show that both types of contextual information affect how the information surrogates are judged and what actions are performed as a result of the surrogates.     

《公众获取官方文件的欧盟条约》对我国政府信息公开的启示

随着《中华人民共和国政府信息公开条例》的颁布施行,我国的政府信息公开走向了法制化的道路。但是没有公众广泛参与的中国政府信息公开到底能走多远？怎样转变我们的立法思维,怎样丰富我们的信息公开的手段,从而使公众充分的参与到我们的政府信息公开制度的发展中来,欧盟《公众获取官方文件条约》将会给我们一些启示。     

Exploring solutions for mobile companionship: A design research approach to context-aware management

The mobile phone is not just another device; it is with you day and night, and you rely on its capabilities in work and in private. In short, the mobile phone is your companion. As your companion, it should understand your situational and informational needs. How do we increase the friendliness of your mobile phone, in order to fulfil this promise? In this paper, we explore how context awareness can be used for managing the user mobile experience. To this end, we employed a design research approach to integrate context-aware and cloud based services in an Android application. Through a user evaluation and proof-of-concept implementation we show how new technologies can increase the friendliness of your mobile phone. In so doing, we provide evidence that adaptive applications based on user context offer a fertile ground for taking mobile companionship to the next level.     

网络资源在英语跨文化教学中的运用

信息时代,互联网是人们生活必不可少的部分。网络上前所未有的丰富资源和其跨越时空的互动性为外语教和学带来了革命性的改变。在英语跨文化教学中,运用网络资源已经成了势不可挡的潮流。但是怎样更好地将其纳入跨文化外语教学,是需要不断地理论联系实际地加以探讨的。本文着重阐述了互联网上有哪些可以利用的资源和怎样利用这些资源,以及网络资源运用于英语跨文化教学的优点。     

用Dephi通过OLE机制实现对Office套件的控制

在开发软件时,经常使用到office套件中的word进行排版或要借助excel强大的报表功能,但短时间不可能开发具有这种强大功能的软件,这就需要我们在所开发的软件中操作word或excel。主要阐述了使用Dephi7通过OLE Automation机制控制Office套件的方法。     

Does kindness towards robots lead to virtue? A reply to Sparrow’s asymmetry argument

Does cruel behavior towards robots lead to vice, whereas kind behavior does not lead to virtue? This paper presents a critical response to Sparrow’s argument that there is an asymmetry in the way we (should) think about virtue and robots. It discusses how much we should praise virtue as opposed to vice, how virtue relates to practical knowledge and wisdom, how much illusion is needed for it to be a barrier to virtue, the relation between virtue and consequences, the moral relevance of the reality requirement and the different ways one can deal with it, the risk of anthropocentric bias in this discussion, and the underlying epistemological assumptions and political questions. This response is not only relevant to Sparrow’s argument or to robot ethics but also touches upon central issues in virtue ethics.