IEEE 802.11 i Security and Vulnerabilities

Despite using a variety of comprehensive preventive security measures, the Robust Secure Networks (RSNs) remain vulnerable to a number of attacks. Failure of preventive measures to address all RSN vulnerabilities dictates the need for enhancing the performance of Wireless Intrusion Detection Systems (WIDSs) to detect all attacks on RSNs with less false positive and false negative rates

A Survey of Different Dos Attacks on Wireless Network

Wireless technologies like Wireless LAN (WLAN) 802.11 picking up ubiquity in all associations, undertakings and colleges because of its profitability, cost sparing when contrasted with wired system and usability by enabling the system clients to move physically while keeping up an association with the wireless system. Wireless systems are main stream among the Laptop client group today in light of the portability and usability. Individuals working through remote association must know about the surroundings because of the different sorts of assaults made by the interlopers. Remote systems are extremely defenseless against (Denial of Service) DoS attacks. DoS attacks are an endeavor to make a machine or system asset inaccessible to its clients. It can happen in numerous layers of OSI demonstrate and can happen in different frame Network clients can ensure their frameworks with Wi-Fi Protected Access (WPA) security conventions and Wired Equivalent Privacy (WEP), however DoS attack still can't be averted utilizing these conventions. These attacks bring about debasement of the system quality or finish loss of accessibility of the system inside the association. This survey paper makes a review on various kinds of DoS attacks and their countermeasures on the framework systems which depend on the Access Points (AP). The fundamental assaults called Deauthentication and Disassociation Flooding. DoS assaults are considered there avoidance/discovery arrangements. Keywords- Access Points, DoS, Wireless Security, 802.11, Disassociation, Deauthentication, Flooding attack

Security and Privacy Issues in Wireless Mesh Networks: A Survey

This book chapter identifies various security threats in wireless mesh network (WMN). Keeping in mind the critical requirement of security and user privacy in WMNs, this chapter provides a comprehensive overview of various possible attacks on different layers of the communication protocol stack for WMNs and their corresponding defense mechanisms. First, it identifies the security vulnerabilities in the physical, link, network, transport, application layers. Furthermore, various possible attacks on the key management protocols, user authentication and access control protocols, and user privacy preservation protocols are presented. After enumerating various possible attacks, the chapter provides a detailed discussion on various existing security mechanisms and protocols to defend against and wherever possible prevent the possible attacks. Comparative analyses are also presented on the security schemes with regards to the cryptographic schemes used, key management strategies deployed, use of any trusted third party, computation and communication overhead involved etc. The chapter then presents a brief discussion on various trust management approaches for WMNs since trust and reputation-based schemes are increasingly becoming popular for enforcing security in wireless networks. A number of open problems in security and privacy issues for WMNs are subsequently discussed before the chapter is finally concluded.Comment: 62 pages, 12 figures, 6 tables. This chapter is an extension of the author's previous submission in arXiv submission: arXiv:1102.1226. There are some text overlaps with the previous submissio

Access control and availability aspects using wireless solutions based on IEEE 802.11 technologies, providing access to classified networks

Wireless networking is among the fastest growing trends in technology. For military objectives wireless networks are effective and flexible ways of communicating, and important elements in operating quick, accurate and independent. Over the last year’s commercial technology, based on the wireless IEEE 802.11 standard has grown to be low-cost products offering cheap and easy ways to establish rapid communication services. For all that, lacking elements of security, increased availability, weak mechanisms and capabilities in order to protect and safeguard private wireless networking, concerns costumers which require high assurance communication facilities. To comply with physical security, high-end wireless security requirements and protection mechanisms are required to fully ensure the wireless environment and control the enterprise. Wireless networks has not been considered secure enough to be implemented as part of high assurance communication systems which have access to classified information networks. This thesis considers security aspects of wireless networking related to access control and availability, which means that a wide range of security issues will be discussed. Based on availability, the thesis will focus on requirements and mechanisms related to authentication, confidentiality, integrity and authenticity. The thesis has indicated through two problem scenarios that high-end requirements signifies complexity and that security mechanisms must be implemented through adoption and adjustment of the available security protocols IEEE 802.1X and IEEE 802.11i. Still, the thesis has shown that security protocols such as IEEE 802.1X and 802.11i does not solve all security problems. Additional wireless protection systems are required to supervise and control state security in order to protect the wireless network environment. In addition, network-layer security is required to oblige end-to-end security control. The conclusion brings security in wireless network into comprehensive challenges that require fully control to analyze data and operations to consolidate the wireless environment. Considering wireless protection systems which operate as integrated parts of high assurance wireless system, the thesis has investigated mechanisms and ways to actively protect the wireless network environment. The thesis has shown that wireless monitor and honeypot networks introduce potential solutions to meet availability aspects in turns of automatic detection, protection and preventio

Traffic engineering multi-layer optimization for wireless mesh network transmission a campus network routing protocol transmission performance inhancement

This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel UniversityThe wireless mesh network is a potential network for the future due to its excellent inherent characteristic for dynamic self-healing, self-configuration and self-organization. It also has the advantage of easy interoperability networking and the ability to form multi-linked ad-hoc networks. It has a decentralized topology, is cheap and highly scalable. Furthermore, its ease in deployment and easy maintenance are other inherent networking qualities. These aforementioned qualities of the wireless mesh network bring advantages to transmission capability of heterogeneous networks. However, transmissions in wireless mesh network create comparative performance based challenges such as congestion, load-balancing, scalability over increasing networks and coverage capacity. Consequently, these challenges and problems in the routing and switching of packets in the wireless mesh network routing protocols led to a proposal on the resolution of these failures with a combination algorithm and a management based security for the network and its transmitted packets. There are equally contentious services like reliability of the network and quality of service for real-time multimedia traffic flows with other challenges such as path computation and selection in the wireless mesh network. This thesis is therefore a cumulative proposal to the resolution of the outlined challenges and open research areas posed by using wireless mesh network routing protocol. It advances the resolution of these challenges in the mesh environment using a hybrid optimization – traffic engineering, to increase the effectiveness and the reliability of the network. It also proffers a cumulative resolution of the diverse contributions on wireless mesh network routing protocol and transmission. Adaptation and optimization are carried out on the wireless mesh network designed network using traffic engineering mechanism and technique. The research examines the patterns of mesh packet transmission and evaluates the challenges and failures in the mesh network packet transmission. It develops a solution based algorithm for resolutions and proposes the traffic engineering based solution.. These resultant performances and analysis are usually tested and compared over wireless mesh IEEE802.11n or other older proposed documented solution. This thesis used a carefully designed campus mesh network to show a comparative evaluation of an optimal performance of the mesh nodes and routers over a normal IEE802.11n based wireless domain network to show differentiation by optimization using the created algorithms. Furthermore, the indexes of performance being the metric are used to measure the utility and the reliability, including capacity and throughput at the destination during traffic engineered transmission. In addition, the security of these transmitted data and packets are optimized under a traffic engineered technique. Finally, this thesis offers an understanding to the security contribution using traffic engineering resolution to create a management algorithm for processing and computation of the wireless mesh networks security needs. The results of this thesis confirmed, completed and extended the existing predictions with real measurement

Study of Performance of Security Protocols in Wireless Mesh Network

Wireless Mesh Networks (WMNs) represent a good solution to providing wireless Internet connectivity in a sizable geographic area; this new and promising paradigm allows for network deployment at a much lower cost than with classic WiFi networks. Standards-based wireless access takes advantage of the growing popularity of inexpensive Wi-Fi clients,enabling new service opportunities and applications that improve user productivity and responsiveness. The deployment of WMNs, are suffered by : (i) All, the communications being wireless and therefore prone to interference, present severe capacity and delay constraints, (ii) The second reason that slows down the deployment of WMNs is the lack of security guarantees. Wireless mesh networks mostly susceptible to routing protocol threats and route disruption attacks. Most of these threats require packet injection with a specialized knowledge of the routing protocol; the threats to wireless mesh networks and are summarized as (i) External attacks: in which attackers not belonging to the network jam the communication or inject erroneous information, and (ii) Internal attacks: in which attackers are internal, compromised nodes that are difficult to be detected. The MAC layers of WMN are subjected to the attacks like Eavesdropping, Link Layer Jamming Attack, MAC Spoofing Attack, and Replay Attack. The attacks in Network Layer are: Control Plane Attacks, Data Plane Attacks, Rushing attack, Wormhole attack, and Black Hole Attack. In this project work we are concern with the threats related to Network layer of WMN based upon 802.11i and analysis the performance of secure routing protocols and their performance against the intrusion detection