【摘要】：現階段用戶與用戶、終端與大型數據中心之間通信量越來越大，傳統(tǒng)網絡架構很難滿足網絡通信效率和安全的高標準要求�；趥鹘y(tǒng)架構的無線傳感器網絡（WirelessSensor Networks,WSN）同樣面臨兩方面問題，一方面現有WSN只能部署單一路由協議，不能根據網絡狀況靈活改變路由策略；另一方面隨著針對WSN的入侵方式越來越多樣化，基于傳統(tǒng)架構的WSN入侵檢測方式較為單一，檢測效果較差。 為了解決傳統(tǒng)網絡架構對WSN路由傳輸及安全限制的問題，本文引入了一種新型網絡架構---軟件定義網絡（Software Defined Network, SDN），實現網絡傳輸與邏輯控制相分離，分布式協同計算和集中式管理控制相結合，有效提高網絡路由效率，降低節(jié)點能耗，提高入侵檢測準確度，降低誤警率。 論文所做工作如下： 1、全面總結分析了基于傳統(tǒng)網絡架構的無線傳感器網絡路由協議，分析了現有無線傳感器路由協議的優(yōu)缺點，指出了其在傳統(tǒng)架構下面臨的低效率與高能耗問題。 2、將基于OpenFlow的SDN架構引入無線傳感器網絡中，提出了新型的WSN架構，采用混合型路由機制，使無線傳感器網絡具備靈活的可編程擴展能力。通過與傳統(tǒng)路由算法仿真對比分析，結果表明新型架構下無線傳感器網絡具有高效率、低能耗的優(yōu)點。 3、總結分析了傳統(tǒng)網絡架構下的WSN入侵檢測方案，指出了其缺陷，如受節(jié)點能量限制只能部署輕量級算法，檢測機制單一，無法實現分布式與集中檢測相結合，，響應機制不夠靈活等。本文提出了一種基于新型架構的漏洞掃描與入侵檢測相結合的方案，通過對比分析驗證了新型架構下入侵檢測模型的優(yōu)勢。
[Abstract]:At present, the communication between users and users, between terminals and large data centers is increasing, and the traditional network architecture is difficult to meet the high standards of network communication efficiency and security. Wireless sensor networks (WirelessSensor Networks,WSN) based on traditional architecture also face two problems. On the one hand, the existing WSN can only deploy a single routing protocol, and can not flexibly change routing policies according to the network conditions. On the other hand, with the diversification of intrusion modes for WSN, the traditional WSN intrusion detection method based on the traditional architecture is relatively simple, and the detection effect is poor. In order to solve the problem that traditional network architecture restricts WSN routing transmission and security, a new network architecture, software defined network (Software Defined Network, SDN), is introduced to separate network transmission from logical control. The combination of distributed cooperative computing and centralized management and control can effectively improve network routing efficiency, reduce node energy consumption, improve intrusion detection accuracy and reduce false alarm rate. The work of this paper is as follows: 1. The routing protocols of wireless sensor networks based on traditional network architecture are summarized and analyzed, and the advantages and disadvantages of existing wireless sensor routing protocols are analyzed. The problems of low efficiency and high energy consumption in traditional architecture are pointed out. Secondly, the SDN architecture based on OpenFlow is introduced into wireless sensor networks, and a new type of WSN architecture is proposed, which adopts hybrid routing mechanism. The wireless sensor network has flexible programmable expansibility. Compared with the traditional routing algorithm, the simulation results show that the wireless sensor network has the advantages of high efficiency and low energy consumption. 3. The WSN intrusion detection scheme under the traditional network architecture is summarized and analyzed. It is pointed out that, for example, limited by node energy, only lightweight algorithm can be deployed, the detection mechanism is single, the combination of distributed detection and centralized detection can not be realized, and the response mechanism is not flexible enough. In this paper, a new architecture based vulnerability scanning and intrusion detection scheme is proposed, and the advantages of the intrusion detection model under the new architecture are verified by comparison and analysis.
【學位授予單位】：河南大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TP393.08

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本文編號：2289402