Attacks and defense in mobile wireless ad hoc networks

当前针对移动的Ad Hoc网络的威胁越来越复杂，基于单一攻击的防范方案已不再有效。事实上，目前的研究缺乏对攻击之间的协调和各种攻击者之间的协作的理解，因为这正在成为恶意节点的强大策略。在移动自组网中，当一个节点在路由形成中行为不当时，很难识别恶意活动。 如果多个节点同时或交替地进行恶意操作，则处理它们的方案在大多数节点上变得非常缓慢。以前的工作已经建立了一个基础，在这项研究中提出的工作。目前的研究建议将解决问题的表征，建模和防御协调/协作攻击的移动的无线ad hoc网络。本研究的具体目标是：（1）攻击的分类：攻击者已经合作起来，进行更复杂和微妙的攻击，以防止检测或识别。我们将提供一个更详细的分类的合作攻击的基础上，他们的不同目标和典型的攻击在每一种类型。（2）黑洞攻击的检测与预防：通过引入一些关键机制，设计了一种基于改进的AODV协议的多黑洞节点协作检测与预防方法。我们将研究合作攻击对ad-hoc网络中现有路由协议的影响，以获得设计安全机制的见解，然后，我们将评估所提出的方法，并将其与现有的路由协议进行比较。(3)检测和预防虫洞攻击：我们将设计一个机制来分类虫洞攻击的各种形式。(4)我们将进行实验来描述攻击模式，并研究攻击对场景公平性的影响。该研究项目有望为多跳无线网络安全知识的进步做出重大贡献。

Current threats against Mobile Ad Hoc Networks (MANETs) are becoming more and more sophisticated that prevention solutions based on single attacks are by no means effective. In fact, the current research is missing an understanding of the coordination among attacks and the collaboration among various attackers since that is emerging as a powerful strategy for malicious nodes. In MANETs, the identification of malicious activity is hard when one node misbehaves in route formation. If multiple nodes act maliciously, simultaneously, or alternately, the schemes to deal with them become very slow at most nodes. Previous works have built a foundation for the work proposed in this research. The current research proposal will address issues of characterizing, modeling, and defense against coordinated/collaborative attacks for mobile wireless ad hoc networks. The specific objectives of this research are: (1) Classification of attacks: adversaries have collaborated together to conduct more complex and subtle attacks to prevent detection or identification. We will provide a more detail classification of collaborative attacks based on their different objectives and typical attacks in each type. By exposing the common properties of different attacks in the same group, we will design generic detection and prevention approaches, (2) Detection and Prevention of Blackhole Attack: we will design a methodology for identifying multiple black hole nodes cooperating as a group with a modified AODV protocol by introducing some key mechanisms. We will study the impact of collaborative attacks on the existing routing protocols in ad-hoc networks, in order to gain insights on designing secure mechanisms, then, we will evaluate the proposed methodology and compare it with existing routing protocols. (3) Detection and Prevention of Wormhole attack: we will design a mechanism to classify wormhole attacks in its various forms. (4) We will conduct experiments to characterize attack patterns and study the effects on fairness for scenarios under attacks. This research project is expected to contribute significantly to the advancement of knowledge in multi-hop wireless networks security.