8804

8165

كارشناسي ارشد

مخابرات

اصفهان: دانشگاه صنعتي اصفهان، دانشكده برق و كامپيوتر

1392

ده،104ص.: مصور،جدول

ص.ع.به فارسي و انگليسي

مهدي برنجكوب

13/2/93

علي فانيان، محمدحسين منشئي

مهندسي برق و كامپيوتر

ID8165

105Securing Ad hoc On Demand Distance Vector AODV Algorithm Based on Both Cryptography And Intrusion Detection Mohammad Kazem Houri Zarch Mk houri@ec iut ac ir Date of Submission 2014 01 5 Department of Electrical and Computer Engineering Isfahan University of Technology Isfahan 84156 83111 Iran Degree M Sc Language FarsiSupervisor Mehdi Berenjkoub brnjkb@cc iut ac irAbstractIt is of great importance to address the multi hop routing protocols in mobile ad hocnetworks MANET Assuming secure wireless channel and trustable cooperative nodes inexecuting the protocol helps to find the best path with minimum hop between source anddestination and utilize the network resources efficiently in order to improve theperformance Routing in MANETs faces a number of security attacks due to dynamictopology lack of any infrastructure wireless channels anticipated cooperative nodes anddistributed environment in this kind of networks Therefore providing a tight security forthese networks is an important issue Throughout the last decade a lot of works deal withsolving the security problems of routing protocols in MANET These works includeproposing secure protocols key management trust management and intrusion detectionsystems Utilizing different cryptography mechanisms such as Symmectric key encryption digital signatures and hash functions in proposing secure protocols and using intrusiondetection systems are popular approaches for securing MANETs in the literature However in this work by choosing one of the most common routing protocols AODV we evaluatethe performance of the two security mechanisms cryptography and intrusion detection andwe show how much using each of these approaches can be effective against variousattacks Considering these two approaches against threats we propose two schemes inorder to improve the performance First we present a mechanism for generating route reply packets in SAODV the secure version of AODV protocol Second we define andsuggest an optimized feature set in order to improve the anomaly detection in the network Finally by addressing the advantages and disadvantages of these approaches in AODV andaiming an acceptable level of security we propose a novel scheme which utilizes bothcryptography mechanism and intrusion detection simultaneously Keywords Mobile Ad hoc Network MANET Security AODV SAODV Intrusion DetectionSystem

مهدي برنجكوب

علي فانيان، محمدحسين منشئي