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论文作者:www.51lunwen.org论文属性:本科毕业论文 Thesis登出时间:2014-08-24编辑:felicia点击率:17554
论文字数:6361论文编号:org201408190858459958语种:英语 English地区:中国价格:免费论文
关键词:无线网络信息技术wireless networkscomputing servicesAd-hoc networks
摘要:本文是一篇信息技术留学论文。随着当前技术的不断进步,无线网络越来越普及。这些网站让用户可以“自由旅行”,从一个地方到另一个地方的过程中可以享受不中断的计算机网络服务。本文以自组网为例,分析无线网络运营的作用和影响。
Chapter 2
SECURITY ATTACKS
Here I attempts to provide a comprehensive overview of attacks and secure routing. It first analyzes the reason that ad hoc network is vulnerable to attacks. Then it presents the well known attacks and the popular secure protocols. Is out of its radio range, the cooperation of other nodes in the Network is needed. This is known as multi-hop communication. Therefore, each node must do something as both a host and a router at the same time.
In most wireless networking environments in productive use today the users' devices communicate either via some networking infrastructure in the form of base stations and a backbonenetwork,ordirectlywiththeirintended communication partner, e.g. by means of 802.11 in ad hoc networks
In distinction a mobile ad-hoc network is a self-configuring network that is formed automatically via wireless links by a collection of mobile nodes without the help of a fixed infrastructure or centralized management. Every hop in the mobile ad-hoc networks is ready with a wireless transmitter and receiver, which allow it to communicate with other nodes in its radio communication area. Hops are more often share the same physical media. They broadcast and obtain signals at the same frequency band, and chase the same hopping series or spreading code. If the purpose node is not inside the broadcasting range of the sending node, then the sending node takes help of the intermediate hops to communicate with the purpose node by relaying the messages hop by hop. Fig.2 describes the Mobile ad-hoc network. In order for a node to forward a packet to a node that
TYPES OF THE SECURITY ATTACKS
Securing wireless ad hoc networks is a highly demanding issue. Due to dynamic scattered infrastructure-less nature and be deficient in of centralized monitoring points, the ad hoc networks are susceptible to a variety of attacks. Ad hoc networks have to manage with the same kinds of vulnerabilities as their wired counterparts. As well as with new vulnerabilities specific to the ad hoc context. In addition, conventional vulnerabilities are also accentuated by the ad hoc paradigm. Initially, the wireless channel is available for the both genuine network users and cruel attackers. The ad hoc networks are vulnerable to attacks ranging from static eavesdropping to active prying. Secondly, the be short of an online CA or Trusted Third Party adds the complexity to 本论文由英语论文网提供整理,提供论文代写,英语论文代写,代写论文,代写英语论文,代写留学生论文,代写英文论文,留学生论文代写相关核心关键词搜索。