Secure routing for mobile ad hoc networks
Zygmunt Haas2005, IEEE Communications Surveys & Tutorials
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Abstract
In this article we present a survey of secure ad hoc routing protocols for mobile wireless networks. A mobile ad hoc network is a collection of nodes that is connected through a wireless medium forming rapidly changing topologies. The widely accepted existing routing protocols designed to accommodate the needs of such self-organized networks do not address possible threats aiming at the disruption of the protocol itself. The assumption of a trusted environment is not one that can be realistically expected; hence, several efforts have been made toward the design of a secure and robust routing protocol for ad hoc networks. We briefly present the most popular protocols that follow the table-driven and the source-initiated on-demand approaches. Based on this discussion we then formulate the threat model for ad hoc routing and present several specific attacks that can target the operation of a protocol. In order to analyze the proposed secure ad hoc routing protocols in a structured way we have classified them into five categories: solutions based on asymmetric cryptography; solutions based on symmetric cryptography; hybrid solutions; reputation-based solutions; and a category of add-on mechanisms that satisfy specific security requirements. A comparison between these solutions can provide the basis for future research in this rapidly evolving area.
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Mobile Ad hoc wireless networks (MANETs) assume no existing infrastructure is available for routing packets end-to-end in a network and instead rely on intermediary peers. The nodes in MANET are subject to various attacks that range from naïve eavesdropping to vicious battery draining attacks. Routing Protocols, data, bandwidth and battery power are the common target of theses attacks. This paper gives an overview of seven such secure routing protocols by presenting their characteristics and functionality along with their respective merits and drawbacks. A Comparison of these protocols is also presented based upon certain security parameters.
Security Challenges In Ad Hoc Networks
Ad hoc networks are special networks that do not require an infrastructure. Nodes of such networks are usually mobile and wireless. Wireless nodes use a shared medium for communication, so they are able to communicate with many nodes directly provided they are within communication range of those nodes.
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