8196

7594

كارشناسي ارشد

مخابرات سيستم

اصفهان: دانشگاه صنعتي اصفهان، دانشكده برق و كامپيوتر

1392

نه،96ص.: مصور،جدول،نمودار

ص.ع.به فارسي و انگليسي

محمد حسين منشئي

علي فانيان

10/9/92

مهندسي برق و كامپيوتر

ID7594

به فارسي و انگليسي: قابل رويت در نسخه ديجيتالي

A Game Theoretic Approach for Counter Fingerprinting Operating System Sadegh Farhang s farhang@ec iut ac ir Date of Submission 2009 06 23 Department of Electrical and Computer Engineering Isfahan University of Technology Isfahan 84156 83111 Iran Degree M Sc Language FarsiSupervisor Mohammad Hossein Manshaei manshaei@cc iut ac irAbstract In computer networks service providers are basically unaware of the type of connectednodes These nodes could be potentially an attacker who would launch an attack at anytime during their connections Hence service providers must consider all potential types ofattackers when they provide service to different nodes In this thesis we focus on aparticular type of attack named remote operating system fingerprinting With OSfingerprinting the attacker tries to recognize the operating system of the server in order toexploit its vulnerabilities We first develop an incomplete information two player game toanalyze the interaction between the server and an unknown connected node In particular we consider two types of nodes i e attacker and benign nodes We analyze the gameusing perfect Bayesian Nash equilibrium PBNE with different conditions We finallydesign the BayesDefender algorithm using the calculated PBNE profiles BayesDefender isnot only able to defend against OS fingerprinting but also provide good quality services tobenign nodes We also implement the BayesDefender and show its performance on a realplatform Keywords Fingerprint Operating System Attack Game Theory BayesDefender Algorithm PerfectBayesian Nash Equilibrium

محمد حسين منشئي

علي فانيان