Download or read book Security for Multihop Wireless Networks written by Shafiullah Khan and published by CRC Press. This book was released on 2014-04-15 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt: Security for Multihop Wireless Networks provides broad coverage of the security issues facing multihop wireless networks. Presenting the work of a different group of expert contributors in each chapter, it explores security in mobile ad hoc networks, wireless sensor networks, wireless mesh networks, and personal area networks.Detailing technologies

Download or read book Security for Multi hop Wireless Networks written by Mohamed M. E. A. Mahmoud and published by Springer Science & Business Media. This book was released on 2014-02-20 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Springer Brief discusses efficient security protocols and schemes for multi-hop wireless networks. It presents an overview of security requirements for these networks, explores challenges in securing networks and presents system models. The authors introduce mechanisms to reduce the overhead and identify malicious nodes that drop packets intentionally. Also included is a new, efficient cooperation incentive scheme to stimulate the selfish nodes to relay information packets and enforce fairness. Many examples are provided, along with predictions for future directions of the field. Security for Multi-hop Wireless Networks demonstrates recent research that enhances the efficiency and safety of these key networks. Concise and practical, it is a useful tool for researchers and professionals working in network security. It is also a valuable resource for advanced-level students interested in wireless communications and networking.

Download or read book Towards Ubiquitous Multihop Wireless Networks written by Kimaya Mittal and published by . This book was released on 2006 with total page 594 pages. Available in PDF, EPUB and Kindle. Book excerpt: In summary, this dissertation addresses critical challenges related to the limited capacity and security of multihop wireless networks. Our work significantly advances the state-of-the-art in wireless networking, and brings us closer to realizing the vision of ubiquitous multihop wireless networks.

Download or read book Secure Routing in Multi Hop Wireless Networks written by Gergely Acs and published by LAP Lambert Academic Publishing. This book was released on 2010-08 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: Routing is a fundamental networking function in every communication system, and multi-hop wireless networks are no exceptions. Attacking the routing service, an adversary can easily paralyse the operation of an entire network. The malicious manipulation of some routing messages results in the dissemination of incorrect routing information which can eventually lead to network malfunction. Even more, intermediate nodes can be corrupted, and thus, exhibit arbitrary behavior. Due to the subtle nature of attacks against routing protocols, informal reasoning about wireless routing security is an error-prone method. In this work, I develop a formal framework in which precise definitions of secure routing can be given, and secure routing protocols proposed for multi-hop wireless networks can be rigorously analysed. I demonstrate the usefulness of this framework in two ways: first, I prove the security of several existing routing protocols. Second, applying the design principles that were identified during the analyses, I propose novel routing protocols for wireless ad hoc and sensor networks and I prove that they are secure in my model.

Download or read book Energy Efficiency and Security for Multihop Wireless Networks written by and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Multihop Wireless Networks written by Kai Zeng and published by John Wiley & Sons. This book was released on 2011-07-13 with total page 211 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an introduction to opportunistic routing an emerging technology designed to improve the packet forwarding reliability, network capacity and energy efficiency of multihop wireless networks This book presents a comprehensive background to the technological challenges lying behind opportunistic routing. The authors cover many fundamental research issues for this new concept, including the basic principles, performance limit and performance improvement of opportunistic routing compared to traditional routing, energy efficiency and distributed opportunistic routing protocol design, geographic opportunistic routing, opportunistic broadcasting, and security issues associated with opportunistic routing, etc. Furthermore, the authors discuss technologies such as multi-rate, multi-channel, multi-radio wireless communications, energy detection, channel measurement, etc. The book brings together all the new results on this topic in a systematic, coherent and unified presentation and provides a much needed comprehensive introduction to this topic. Key Features: Addresses opportunistic routing, an emerging technology designed to improve the packet forwarding reliability, network capacity and energy efficiency of multihop wireless networks Discusses the technological challenges lying behind this new technology, and covers a wide range of practical implementation issues Explores many fundamental research issues for this new concept, including the basic principles of opportunistic routing, performance limits and performance improvement, and compares them to traditional routing (e.g. energy efficiency and distributed opportunistic routing protocol design, broadcasting, and security issues) Covers technologies such as multi-rate, multi-channel, multi-radio wireless communications, energy detection, channel measurement, etc. This book provides an invaluable reference for researchers working in the field of wireless networks and wireless communications, and Wireless professionals. Graduate students will also find this book of interest.

Download or read book Protection and Security Aware QoS Framework for 4G Multihop Wireless Networks written by Perumalraja Rengaraju and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Security and Cooperation in Wireless Networks written by Levente Buttyán and published by Cambridge University Press. This book was released on 2007-11-29 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first self-contained text to consider security and non-cooperative behavior in wireless networks. Major networking trends are analyzed and their implications explained in terms of security and cooperation, and potential malicious and selfish misdeeds are described along with the existing and future security techniques. Fundamental questions of security including user and device identification; establishment of security association; secure and cooperative routing in multi-hop networks; fair bandwidth distribution; and privacy protection are approached from a theoretical perspective and supported by real-world examples including ad hoc, mesh, vehicular, sensor, and RFID networks. Important relationships between trust, security, and cooperation are also discussed. Contains homework problems and tutorials on cryptography and game theory. This text is suitable for advanced undergraduates and graduate students of electrical engineering and computer science, and researchers and practitioners in the wireless industry. Lecture slides and instructor-only solutions available online (www.cambridge.org/9780521873710).

Download or read book Improving the Performance and Security of Multi hop Wireless Networks written by Chi Zhang and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Last, we studies the relationships between network security requirement and network performance degradation. We characterize the asymptotic behaviors of achievable secure throughput and delay when the network size is sufficiently large.

Download or read book Security and Routing in Wireless Networks written by Yang Xiao and published by Nova Publishers. This book was released on 2005 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the advance of wireless networks, building reliable and secured network connections is becoming extremely important. On the other hand, ad hoc networks become especially important and have many useful applications. The primary focus of this book is to present these two hot and rapidly evolving areas in wireless networks. Security and scheduling/routing in wireless networks remain challenging research problems due to the complexity involved. How to develop more efficient and reliable wireless networks remains a hot research area. It is this realisation that has motivated the editing of this book. The goal of the book is to serve as a reference for both security in wireless networks and channel access, scheduling, and routing in ad hoc networks. In this book, the authors review important developments and new strategies for these topics. Important features and limitations of methods and models are identified. Consequently, this book can serve as a useful reference for researchers, educators, graduate students, and practitioners in the field of wireless networks. This book contains 14 invited chapters from prominent researchers working in this area around the world. All of the cha

Download or read book Resource Mobility and Security Management in Wireless Networks and Mobile Communications written by Yan Zhang and published by CRC Press. This book was released on 2006-10-25 with total page 634 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organized into three parts, Resource, Mobility, and Security Management in Wireless Networks and Mobile Communications examines the inherent constraint of limited bandwidth and unreliable time-varying physical link in the wireless system, discusses the demand to realize the service continuity in the single-hop or multi-hop wireless networks, and ex

Download or read book Network Coding Based Information Security in Multi hop Wireless Networks written by Yanfei Fan and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Opportunistic Routing in Multihop Wireless Networks written by Kai Zeng and published by . This book was released on 2008 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Opportunistic routing (OR) takes advantages of the spatial diversity and broadcast nature of wireless networks to combat the time-varying links by involving multiple neighboring nodes (forwarding candidates) for each packet relay. This dissertation studies the properties, energy efficiency, capacity, throughput, protocol design and security issues about OR in multihop wireless networks. Firstly, we study geographic opportunistic routing (GOR), a variant of OR which makes use of nodes' location information. We identify and prove three important properties of GOR. The first one is on prioritizing the forwarding candidates according to their geographic advancements to the destination. The second one is on choosing the forwarding candidates based on their advancements and link qualities in order to maximize the expected packet advancement (EPA) with different number of forwarding candidates. The third one is on the concavity of the maximum EPA in respect to the number of forwarding candidates. We further propose a local metric, EPA per unit energy consumption, to tradeoff the routing performance and energy efficiency for GOR. Leveraging the proved properties of GOR, we propose two efficient algorithms to select and prioritize forwarding candidates to maximize the local metric. Secondly, capacity is a fundamental issue in multihop wireless networks. We propose a framework to compute the end-to-end throughput bound or capacity of OR in single/multirate systems given OR strategies (candidate selection and prioritization). Taking into account wireless interference and unique properties of OR, we propose a new method of constructing transmission conflict graphs, and we introduce the concept of concurrent transmission sets to allow the proper formulation of the maximum end-to-end throughput problem as a maximum-flow linear programming problem subject to the transmission conflict constraints. We also propose two OR metrics: expected medium time (EMT) and expected advancement rate (EAR), and the corresponding distributed and local rate and candidate set selection schemes, the Least Medium Time OR (LMTOR) and the Multirate Geographic OR (MGOR). We further extend our framework to compute the capacity of OR in multi-radio multi-channel systems with dynamic OR strategies. We study the necessary and sufficient conditions for the schedulability of a traffic demand vector associated with a transmitter to its forwarding candidates in a concurrent transmission set. We further propose an LP approach and a heuristic algorithm to obtain an opportunistic forwarding strategy scheduling that satisfies a traffic demand vector. Our methodology can be used to calculate the end-to-end throughput bound of OR in multi-radio/channel/rate multihop wireless networks, as well as to study the OR behaviors (such as candidate selection and prioritization) under different network configurations. Thirdly, protocol design of OR in a contention-based medium access environment is an important and challenging issue. In order to avoid duplication, we should ensure only the "best" receiver of each packet to forward it in an efficient way. We investigate the existing candidate coordination schemes and propose a "fast slotted acknowledgment" (FSA) to further improve the performance of OR by using a single ACK to coordinate the forwarding candidates with the help of the channel sensing technique. Furthermore, we study the throughput of GOR in multi-rate and single-rate systems. We introduce a framework to analyze the one-hop throughput of GOR, and provide a deeper insight on the trade-off between the benefit (packet advancement, bandwidth, and transmission reliability) and cost (medium time delay) associated with the node collaboration. We propose a local metric named expected one-hop throughput (EOT) to balance the benefit and cost. Finally, packet reception ratio (PRR) has been widely used as an indicator of the link quality in multihop wireless networks. Many routing protocols including OR in wireless networks depend on the PRR information to make routing decision. Providing accurate link quality measurement (LQM) is essential to ensure the right operation of these routing protocols. However, the existing LQM mechanisms are subject to malicious attacks, thus can not guarantee to provide correct link quality information. We analyze the security vulnerabilities in the existing link quality measurement (LQM) mechanisms and propose an efficient broadcast-based secure LQM (SLQM) mechanism, which prevents the malicious attackers from reporting a higher PRR than the actual one. We analyze the security strength and the cost of the proposed mechanism.

Download or read book Trust Management and Security Analysis of Opportunistic Routing Protocols in Multihop Wireless Networks written by Mahmood Salehi and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Routing in wireless sensor, mobile ad-hoc, and vehicular networks is a crucial operation having significantly attracted scientists' attention during the past years. Opportunistic routing, however, is a novel and promising approach, which is still an ongoing research paradigm. The purpose of opportunistic routing protocols is to increase the reliability of delivering data packets to their destination by utilizing the broadcast nature of wireless networks and selecting a set of nodes, instead of only one, as potential next-hop candidates. Apart from the reliability, security and trustworthiness of communications is also a challenging task. More specifically, almost all traditional and opportunistic routing protocols require cooperation of all network nodes to complete the routing process. However, some nodes in the network may be compromised and avoid collaboration with others due to various selfish or malicious motivations. The focus of this thesis is on modeling security challenges and developing trust-based opportunistic routing protocols. This way, communication between nodes will not only benefit from the reliability of opportunistic routing methods, but also from the security of trust and reputation management schemes. For this purpose, a novel trust-based opportunistic routing protocol is proposed that introduces three different candidate selection metrics known as RTOR, TORDP, and GEOTOR. Such metrics have been designed to address specific characteristics of opportunistic routing protocols. In continue, a watchdog mechanism is proposed to assist nodes in monitoring their candidates, recalculating their trust value, and finally replacing malicious candidates with benign ones. Afterwards, an analytical approach is introduced using Discrete-Time Markov Chain to demonstrate the effect of malicious nodes on different parameters of a wireless network that uses opportunistic routing. In this model, a new method of calculating packet drop ratio is introduced to represent the effect of attackers. The model is then applied on different well-known opportunistic routing protocols and results of the model are verified by simulation. Finally, the proposed analytical model is extended to include a defensive mechanism against adversary nodes. In fact, a packet salvaging mechanism is developed through which backup candidates attempt to save some of the maliciously dropped data packets. Different related network parameters such as delivery ratio, salvage ratio, direct-delivery ratio, etc. are then introduced, calculated, and reported using the introduced model.

Download or read book Secure Routing and Medium Access Protocols in Wireless Multi hop Networks written by Soufiene Djahel and published by GRIN Verlag. This book was released on 2011-12 with total page 173 pages. Available in PDF, EPUB and Kindle. Book excerpt: Doctoral Thesis / Dissertation from the year 2011 in the subject Computer Science - Internet, New Technologies, Lille 1 University (Laboratoire d'Informatique Fondamentale de Lille), course: Security in Wireless Multi-hop Networks, language: English, abstract: While the rapid proliferation of mobile devices along with the tremendous growth of various applications using wireless multi-hop networks have significantly facilitate our human life, securing and ensuring high quality services of these networks are still a primary concern. In particular, anomalous protocol operation in wireless multi-hop networks has recently received considerable attention in the research community. These relevant security issues are fundamentally different from those of wireline networks due to the special characteristics of wireless multi-hop networks, such as the limited energy resources and the lack of centralized control. These issues are extremely hard to cope with due to the absence of trust relationships between the nodes. To enhance security in wireless multi-hop networks, this dissertation addresses both MAC and routing layers misbehaviors issues, with main focuses on thwarting black hole attack in proactive routing protocols like OLSR, and greedy behavior in IEEE 802.11 MAC protocol. Our contributions are briefly summarized as follows. As for black hole attack, we analyze two types of attack scenarios: one is launched at routing layer, and the other is cross layer. We then provide comprehensive analysis on the consequences of this attack and propose effective countermeasures. As for MAC layer misbehavior, we particularly study the adaptive greedy behavior in the context of Wireless Mesh Networks (WMNs) and propose FLSAC (Fuzzy Logic based scheme to Struggle against Adaptive Cheaters) to cope with it. A new characterization of the greedy behavior in Mobile Ad Hoc Networks (MANETs) is also introduced. Finally, we design a new backoff scheme to quickly detect the greedy nodes that

Download or read book Security in Wireless Mesh Networks written by Yan Zhang and published by CRC Press. This book was released on 2008-08-21 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wireless mesh networks (WMN) encompass a new area of technology set to play an important role in the next generation wireless mobile networks. WMN is characterized by dynamic self-organization, self-configuration, and self-healing to enable flexible integration, quick deployment, easy maintenance, low costs, high scalability, and reliable services.

Download or read book Wireless Networks and Security written by Shafiullah Khan and published by Springer Science & Business Media. This book was released on 2013-01-26 with total page 513 pages. Available in PDF, EPUB and Kindle. Book excerpt: “Wireless Networks and Security” provides a broad coverage of wireless security issues including cryptographic coprocessors, encryption, authentication, key management, attacks and countermeasures, secure routing, secure medium access control, intrusion detection, epidemics, security performance analysis, security issues in applications. The contributions identify various vulnerabilities in the physical layer, MAC layer, network layer, transport layer, and application layer, and focus on ways of strengthening security mechanisms and services throughout the layers. This carefully edited monograph is targeting for researchers, post-graduate students in universities, academics, and industry practitioners or professionals.