Computer and Network Security (CS 432)

2021 Spring
Faculty of Engineering and Natural Sciences
Computer Sci.& Eng.(CS)
Albert Levi,
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CS408 EE414 TE404
Formal lecture,Recitation,Laboratory
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Overview of Cryptography, Identification and Authentication, Access Control, Operating System Security(UNIX and Windows Environments), Key Distribution, TCP/IP Security, IPSec, DNSSEC, WWW Security, SSL and TLS, E-mail Security (PGP, S/MIME), PKI and certificate systems, Viruses, Firewalls, Instrusion Detection, E-commerce Security


The objective of this course is to present the current problems in computer, system and network security together with the methods and standards for implementing solutions for them.


  • Show understanding of symmetric and asymmetric cryptographic primitives including their modes, hash functions and message authentication codes
  • Analyze, amend and design the basic security, authentication and key distribution notions, protocols and systems
  • Show the understanding of IP layer security mechanisms and network-level attack prevention and detection systems.
  • Define the basic operation and demonstrate the use of SSH, SSL and TLS protocols for providing security at TCP layer
  • Define the security requirements of e-mail services and demonstrate the use of standard e-mail security mechanisms.
  • Apply the principles of access control models and policies


1. Understand the world, their country, their society, as well as themselves and have awareness of ethical problems, social rights, values and responsibility to the self and to others. 2

2. Understand different disciplines from natural and social sciences to mathematics and art, and develop interdisciplinary approaches in thinking and practice. 1

3. Think critically, follow innovations and developments in science and technology, demonstrate personal and organizational entrepreneurship and engage in life-long learning in various subjects; have the ability to continue to educate him/herself. 2

4. Communicate effectively in Turkish and English by oral, written, graphical and technological means. 3

5. Take individual and team responsibility, function effectively and respectively as an individual and a member or a leader of a team; and have the skills to work effectively in multi-disciplinary teams. 4

1. Possess sufficient knowledge of mathematics, science and program-specific engineering topics; use theoretical and applied knowledge of these areas in complex engineering problems. 1

2. Identify, define, formulate and solve complex engineering problems; choose and apply suitable analysis and modeling methods for this purpose. 3

3. Develop, choose and use modern techniques and tools that are needed for analysis and solution of complex problems faced in engineering applications; possess knowledge of standards used in engineering applications; use information technologies effectively. 3

4. Have the ability to design a complex system, process, instrument or a product under realistic constraints and conditions, with the goal of fulfilling specified needs; apply modern design techniques for this purpose. 1

5. Design and conduct experiments, collect data, analyze and interpret the results to investigate complex engineering problems or program-specific research areas. 1

6. Possess knowledge of business practices such as project management, risk management and change management; awareness on innovation; knowledge of sustainable development. 1

7. Possess knowledge of impact of engineering solutions in a global, economic, environmental, health and societal context; knowledge of contemporary issues; awareness on legal outcomes of engineering solutions; knowledge of behavior according to ethical principles, understanding of professional and ethical responsibility. 1

8. Have the ability to write effective reports and comprehend written reports, prepare design and production reports, make effective presentations, and give and receive clear and intelligible instructions. 1

1. Design, implement, test, and evaluate a computer system, component, or algorithm to meet desired needs and to solve a computational problem. 4

2. Demonstrate knowledge of discrete mathematics and data structures. 1

3. Demonstrate knowledge of probability and statistics, including applications appropriate to computer science and engineering. 1

1. Use mathematics (including derivative and integral calculations, probability and statistics, differential equations, linear algebra, complex variables and discrete mathematics), basic sciences, computer and programming, and electronics engineering knowledge to (a) Design and analyze complex electronic circuits, instruments, software and electronics systems with hardware/software or (b) Design and analyze communication networks and systems, signal processing algorithms or software

1. Applying fundamental and advanced knowledge of natural sciences as well as engineering principles to develop and design new materials and establish the relation between internal structure and physical properties using experimental, computational and theoretical tools. 1

2. Merging the existing knowledge on physical properties, design limits and fabrication methods in materials selection for a particular application or to resolve material performance related problems. 1

3. Predicting and understanding the behavior of a material under use in a specific environment knowing the internal structure or vice versa. 1

1. Familiarity with concepts in statistics and optimization, knowledge in basic differential and integral calculus, linear algebra, differential equations, complex variables, multi-variable calculus, as well as physics and computer science, and ability to use this knowledge in modeling, design and analysis of complex dynamical systems containing hardware and software components. 1

2. Ability to work in design, implementation and integration of engineering applications, such as electronic, mechanical, electromechanical, control and computer systems that contain software and hardware components, including sensors, actuators and controllers. 1


  Percentage (%)
Final 35
Midterm 25
Participation 5
Group Project 18
Homework 17



Cryptography and Network Security, 5th or 6th edition, William Stallings


Computer Security, Dieter Gollmann
Computer Security: Principles and Practice, William Stallings and Lawrie Brown