Accession Number : ADA528112


Title :   Reputation-Based Internet Protocol Security: A Multilayer Security Framework for Mobile Ad Hoc Networks


Descriptive Note : Dissertation


Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING AND MANAGEMENT


Personal Author(s) : Lacey, Timothy H


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a528112.pdf


Report Date : Sep 2010


Pagination or Media Count : 127


Abstract : This research effort examines the theory, application, and results for a Reputation-based Internet Protocol Security (RIPSec) framework that provides security for an ad-hoc network operating in a hostile environment. In RIPSec, protection from external threats is provided in the form of encrypted communication links and encryption-wrapped nodes while internal threats are mitigated by behavior grading that assigns reputations to nodes based on their demonstrated participation in the routing process. Network availability is provided by behavior grading and round-robin multipath routing. If a node behaves faithfully, it earns a positive reputation over time. If a node misbehaves, it earns a negative reputation. Each member of the MANET has its own unique and subjective set of Reputation Indexes (RI) that enumerates the perceived reputation of the other MANET nodes. Nodes that desire to send data will eliminate relay nodes they perceive to have a negative reputation during the formulation of a route. A 50-node MANET is simulated with streaming multimedia and varying levels of misbehavior to determine the impact of the framework on network performance. Analysis of the simulation data shows the number of errors sent is reduced by an average of 52% when using RIPSec.


Descriptors :   *INTERNET , *SECURITY , *COMMUNICATIONS NETWORKS , *COMMUNICATIONS PROTOCOLS , ENEMY , THREATS , MEDIA


Subject Categories : Radio Communications


Distribution Statement : APPROVED FOR PUBLIC RELEASE