Security System for Ad-hoc Wireless Networks

Security System for Ad-hoc Wireless Networks based on Generic Secure Objects Matei Ciobanu Morogan 2005 Ph.D. Thesis Kungliga Tekniska Högskolan Submitted as the partial fulfillment of requirements for the degree of Doctor of Philosophy at the Department of Computer and System Sciences, Kungliga Tekniska Högskolan Department of Computer and Systems Sciences Doctoral Dissertation Department of Computer and System Sciences Stockholm University / Royal Institute of Technology ISBN 91-7178-019-X i Abstract As computing devices and wireless connectivity become ubiquitous, new usage scenarios emerge, where wireless communication links between mobile devices are established in an ad-hoc manner. The resulting wireless ad-hoc networks differ from classical computer networks in a number of ways, lack of permanent access to the global network and heterogeneous structure being some of them. Therefore, security services and mechanisms that have been designed for classical computer networks are not always the optimal solution in an ad-hoc network environment. The research is focused on analyzing how standard security services that are available in classical networks can be provided in an ad-hoc wireless network environment. The goal is to design a security system optimized for operation in ad-hoc wireless networks that provides the same security services -

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  • Level: University Degree
  • Subject: Mathematical and Computer Sciences
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Problems in requirements modelling

. Introduction 5 .1 Project Aim 5 .2 Project Hypothesis 5 .3 Project Objective 6 .4 Research Approach 6 .5 Dissertation Structure 6 2. Software Engineering 8 2.1 Purpose of Software Engineering 8 2.2 Motivation for Software Engineering 9 2.3 The beginning 10 2.4 The different stages in software engineering 11 2.4.1 Requirements specification 12 2.4.2 Design and implementation 12 2.4.3 Testing, validation and verification 13 2.5 Summary 14 3. Methodologies, Tools and Techniques 15 3.1 Overview 15 3.2. Rapid Application Development 16 3.2.1 History of RAD 17 3.2.2 Advantage of RAD 17 3.2.3 Disadvantages of RAD 17 3.3 Multiview 17 3.3.1 Five stages in Multiview 17 3.4 Soft System Methodology 19 3.4.1 Stages in SSM 19 3.4.2 Advantage of SSM 19 3.5 SSADM Structured Systems Analysis And Design Method 20 3.5.1 History of SSADM 20 3.5.3 Disadvantage of SSM 21 3.6 Object Orientated 21 3.6.1 Object Orientated Methods 22 Object-Oriented Analysis (OOA) (Coad90), (Coad91) 23 3.6.3 Notation 24 3.6.5 Advantage of O-O 25 3.6.6 Disadvantages of O-O 25 3.7 The Jackson Structured Design(JSD)(Jack83) 25 3.7.1 The JSD steps 25 3.7.2 Advantage of JSD 25 3.7.3 Disadvantage of JSD 26 3.8 Semiotics 26 3.8.1 Semiotics Framework 26 3.8.2 Normbase - Ontological Charting Tool: Prototype Version 30 3.8.3 Advantages of Semiotics 30 3.8.4 Disadvantages of

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  • Level: University Degree
  • Subject: Mathematical and Computer Sciences
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The Challenges of Network Security

The Challenges of Network Security Remediation at a Regional University A thesis presented to the faculty of the Department of Computer and Information Sciences East Tennessee State University In partial fulfillment of the requirements for the degree Master of Science in Computer Science by William R. Simons May 2005 Dr. Qing Yuan, Chair Dr. Phillip Pfeiffer Mr. Steven Jenkins Keywords: computer, system security, network security, security audit, security hardening, vulnerability, remediation, Nessus, Nmap 2 ABSTRACT The Challenges of Network Security Remediation at a Regional University by William R. Simons This thesis describes challenges encountered during a year-long effort to improve the security of the 3,300 node administrative computer network at East Tennessee State University. The key remediation strategies used included employing the vulnerability scanner Nessus to profile the network, analyzing the scan results, and attempting to remove the most critical vulnerabilities found. The project succeeded in decreasing known "high" criticality vulnerabilities on campus by 26.1%, and confirmed four standard observations about the challenges of network administration: Vulnerability scanning is a lengthy task best performed in parallel and supported by automated data analysis. Securing a network is like trying to hit a moving target, due to an

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  • Level: University Degree
  • Subject: Mathematical and Computer Sciences
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Security in a computing world.

ABSTRACT Security is big issue in a computing world and more professionals and business and government seeking for further security to safeguard and protect their secret and critical data from falling into evil hands. Now people are security concerned as we have seen lot of cracking of computer, exploiting of program in past decade. Confidentiality, Integrity and Authentication are the top priority in security world. My aim in this thesis is to show how an Intrusion Detection System (IDS) can be handy in detection of network and computer attacks. Intrusion Detection System detects the attacks, notifies and logs the attack for later review. To stop the attack it is necessary to know what type of attack has been done against us and then stopping it from happening. By analyzing IDS architecture and techniques to know what would be a best option for a particular network. To show how intrusion could be detected I'll use snort as my IDS. INTRODUCTION An attack is defined as "an assault on system security that derives from an intelligent threat, i.e., an intelligent act that is a deliberate attempt (especially in the sense of a method or technique) to evade security services and violate the security policy of a system". [65] When people made the computer they never thought about the security, the threats that could bring your computer perhaps whole network can come down

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  • Level: University Degree
  • Subject: Mathematical and Computer Sciences
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Cache-Enhanced Dynamic Movement-Based Location Management Schemes for 3G Cellular Networks.

Cache-Enhanced Dynamic Movement-Based Location Management Schemes for 3G Cellular Networks A Thesis Presented in Partial Fulfillment of Requirements for the Degree of Master of Science in the College of Arts and Sciences, Georgia State University, 2003 by Krishna Priya Patury Committee: ____________________________________ Dr. Yi Pan, Chair ____________________________________ Dr. Anu Bourgeois, Member ____________________________________ Dr. Alex Zelikovsky, Member ____________________________________ Date ____________________________________ Dr. Martin D. Fraser Department Chair Abstract Keeping track of mobile terminals moving from one place to another has been and will always be one of the key issues in mobile communication, be it cellular or Personal Communications Service. Location management involves two major kinds of operations: Location update- by which the system keeps track of the location of the mobile terminals that are not in conversation and Paging which is a search process by which the system searches for the Mobile Terminal by sending polling signals to cells in the paging area (which may include one or more cells). To perform either of these operations would incur a significant amount of cost, which should be minimized in the systems. Many mobility management schemes have been proposed as of now for 2-tier Cellular/PCS networks but none

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  • Level: University Degree
  • Subject: Mathematical and Computer Sciences
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The purpose of this project is to discuss the issues associated with the deployment of a secure, WAP-based, transactional banking system, and to build a solution with these issues in mind.

ABSCTRACT The purpose of this project is to discuss the issues associated with the deployment of a secure, WAP-based, transactional banking system, and to build a solution with these issues in mind. There are many pitfalls and problems that have to be overcome when developing a m-commerce solution, ranging from security to providing support for the multitude of WAP-enabled devices that are currently on the market. The problems of linking into an existing back-end infrastructure also need to be met. This paper will compare and contrast available technologies that could be used to solve each of these issues, and justify the technologies that were finally chosen. The goal of this project is to develop a combined retail banking application that was to be delivered multiple channels, including WAP devices. The information has to be retrieved from existing back-end systems on a combination of different platforms. In the following section a detailed description of what WAP and wireless technology is will be enlightened. TABLE OF CONTENTS WAP 8 .1 THE USEFULNESS OF WAP 8 .2 ENCOURAGE AND FOSTER MARKET DEVELOPMENT 9 .3 WAP 2.0: BRINGING WIRELESS CLOSER TO THE INTERNET 13 .4 WHAT IS NEW: WAP 2.0 IS AN EVOLUTIONARY STEP FORWARD 14 .5 ALIGNMENT WITH NEW TECHNOLOGIES AND STANDARDS 15 .6 WAP 2.0 COMPONENTS: APPLICATION SUPPORT, PROTOCOL STACK AND MORE 17 .6.1 Wireless Application

  • Word count: 21083
  • Level: University Degree
  • Subject: Mathematical and Computer Sciences
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The intention of this study is to analyze and explore the emerging field of grid technology. It delves into how the grid is being used to enhance the capabilities of existing distributed systems and data resources.

Issues and Applications of Grid Computing A thesis submitted in partial fulfillment of the requirements for the degree of Bachelor of Science (Computer Science) ABSTRACT The intention of this study is to analyze and explore the emerging field of grid technology. It delves into how the grid is being used to enhance the capabilities of existing distributed systems and data resources. The characteristics of virtual organizations and their participation in implementing a grid structure are observed. The issues surfacing in grid implementation and their possible solutions are discussed. Enhancements and modifications are proposed for existing frameworks for database integration with the grid. A basic grid structure for the Department of Computer Science, University of Karachi has been planned out. The Globus Toolkit, used in grid middleware is tested and run on available resources. TABLE OF CONTENTS ACKNOWLEDGEMENTS v ABSTRACT vi TABLE OF CONTENTS vii LIST OF FIGURES viii LIST OF TABLES viii FUNDAMENTALS OF GRID COMPUTING 1 GRID APPLICATIONS 9 THE GRID ARCHITECTURE 18 ISSUES IN GRID COMPUTING 42 DATABASES AND THE GRID 50 PROPOSED GRID DEVELOPMENT FOR THE UNIVERSITY OF KARACHI 66 CONCLUSIONS 70 OVERVIEW OF GRAM 72 OVERVIEW OF MDS 73 OVERVIEW OF GRIDFTP 74 STARTING GRAM 89 REFERENCES 92 97 LIST OF FIGURES Figure 1.1: Virtual Organizations 6 Figure 2.2: The

  • Word count: 21063
  • Level: University Degree
  • Subject: Mathematical and Computer Sciences
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Requirements Investigation for an Interface for Csound

Requirements Investigation for an Interface for Csound Yuhua Guo City University, London Northampton Square London EC1V 0HB [email protected] Abstract: Csound has been around for more than 20 years and is today's standard digital sound processing program which provides powerful functions for digital sound synthesis. Csound enables people to make music with just a personal computer. Developed originally as a command line driven program by Barry Vercoe, Csound, however, lacks the use interface capability that is needed for most of today's personal computers and this makes it difficult to use for many ordinary composers. The difficulty of using Csound lies in the manual creation of its score and orchestra files which involves the use of many parameters. This project aims to investigate the compositional process of music and gather a set of user requirements for developing a user interface for Csound. The interface will help composers to use Csound more easily. TABLE OF CONTENTS INTRODUCTION 3 2. RESEARCH CONTEXT 5 2.1 THE PRINCIPLES OF SOUND 5 2.1.1 THE HUMAN EAR 5 2.1.2 Fundamental concepts in sound and music 5 2.2 THE HISTORY OF COMPUTER MUSIC 6 2.3 MUSICAL SIGNAL SYNTHESIS 8 2.3.1 Direct synthesis algorithms 10 2.3.2 Physical Modeling Synthesis 13 2.3.3 Synthesis control signals 14 2.3.4 Musical notation and interface 16 2.4 Musical Processing Programs

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  • Level: University Degree
  • Subject: Mathematical and Computer Sciences
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Analyze Asian Point Quests' facility to gain knowledge on its operation.

Introduction Asian Point Quest dotcom Sdn. Bhd. was incorporated to provide system solutions, emphasizing the country's MSC Initiatives, with a dedicated team focusing on solution development and multimedia application initiatives. APQ's main business objective is to focus on solutions for Enterprise Environments where security, high availability, complex systems management as well as business continuity planning are concerns for CEOs and CIOs. We make it our business to assist and ease organization tasks to manage, understand and use the business information systems. Our team has extensive experience in developing Management Information and Business Intelligence Systems as well as Data Warehousing with the latest OLAP/DSS architecture technologies from Microsoft, IBM etc. In line with our objective to be 'The One-Stop Solution Provider and Consultant' for enterprise and e-commerce requirements, our services include networking infrastructure, hardware, application software as well as Internet/ Intranet solutions. Statement of Purpose The main purpose of this report is to analyze a real-life data facility to gain knowledge on its operation. We visited the data facility centre in the Technical Support department of Asian Point Quest Sdn. Bhd . To get a better understanding of the functions and operation of the data facility, we spoke to the department's manager

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  • Level: University Degree
  • Subject: Mathematical and Computer Sciences
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Human Computer Interaction Project.

Human Computer Interaction Project Evaluation of Olympus C1400l Digital Camera Group Members: Lorna Brodbin 9838635 Jean Cronin 9838856 Gillian O'Sullivan 9840435 . Introduction "Every picture tells a story" An old saying that holds true. A picture can tell us more in an instant than a thousand words ever could. A picture records emotions, expressions, feelings and conveys them easily to the onlooker. Photographs capture hundreds of years of history be it on a world scale or at a personal level. We capture our weddings, births, birthdays and other occasions dear to us on camera because we want to hold on to that moment forever. Every time we look at a photograph we remember that day and relive that moment. The camera never lies. It takes a moment in time and freezes it. We rely on photographs as a tool to help us to understand and to remember the history of the world. Most of the worlds great historical events have been captured on film. A photograph of an innocent victim of war makes the victim real, like someone we knew rather than a name in a paper, and touches us far more deeply than stories in a book. Peoples descriptions of events are often tainted by exaggeration, imperfect memories and personal opinions but there is no denying the evidence of a photograph. The camera has come along way since the days of Niepcei. The first cameras were big and

  • Word count: 16745
  • Level: University Degree
  • Subject: Mathematical and Computer Sciences
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