CNT 5412/CNT 4406 Network Security

Spring 2011


LOV 301
2:00PM - 3:15PM

Course Objective

The goal of this course is to provide students with an understanding of fundamental network security concepts and mechanisms, and develop and illustrate the use of cryptography in achieving network security. The students should gain an understanding of how to design and build secure network algorithms and environments. The students should also gain an understanding of network security as it relates to the TCP/IP protocol suite at a detailed level.

Course Description

This course will survey network security from a computer science perspective. We will study basic aspects such as network security services and mechanisms, use of cryptography for implementing network security, and security functionality such as authentication, data integrity, confidentiality and availability. We will cover needed aspects of secret key and public key cryptography, as well as public key infrastructure. We will explore various TCP/IP protocols used in the network security context. We will also briefly cover firewalls and intrusion detection systems and possibly other related topics such as secure DNS as time permits.


In addition to the above official prerequisite, it is also helpful to be acquainted with the fundamental concepts, systems, and architectures of computer networks (by taking courses such as undergraduate computer networks class CNT 4504  or graduate computer networks class CNT 5505)and be comfortable with developing programs using high-level programming languages such as C/C++ and Java. There two requirements will be critical to your fully appreciating the materials that will be covered in this course.


Workload and Grading

There will be five homework assignments (both written and programming), one midterm exam, one final exam, and one group course project. For the group project, each group can have up to 3 students, consisting of either all undergraduate students or all graduate students.

  1. Five (written and programming) homework assignments (40%): 8% each
  2. Two exams (45%)
  3. Group project (15%)

Final letter grades

A [90-100]
A- [89-90)
B+ [88-89)
B [81-88)
B- [80-81)
C+ [79-80)
C [71-79)
C- [70-71)
D [60-70)
F <60

Course Policies:

Attendance Policy:

The university requires attendance in all classes, and it is also important to your learning. The attendance record may be provided to deans who request it. If your grade is just a little below the cutoff for a higher grade, your attendance will be one of the factors that we consider, in deciding whether to "bump" you up to the higher grade. Missing three or fewer lectures will be considered good attendance. In rare cases, such as medical needs or jury duty, absences may be excused with appropriate documentation. You should let me know in advance, when possible, and submit the documentation I seek. You should make up for any materials missed due to absences.

NOTE: recitation attendance is required. Both announced and unannounced quizzes will be given during recitations.

Missed exam Policy:

A missed exam will be recorded as a grade of zero. We will follow the university rules regarding missed exams for all the exams, including the final exam.

Late Assignment Policy:

In order to enable us to provide timely solutions to assignments, we have the following policy regarding submission of late assignments.

Incomplete Grade (Grade of 'I') Policy:

The grade of 'I' will be assigned only under the following exceptional circumstances:


The Florida State University Academic Honor Policy outlines the University's expectations for the integrity of students' academic work, the procedures for resolving alleged violations of those expectations, and the rights and responsibilities of students and faculty members throughout the process.  Students are responsible for reading the Academic Honor Policy and for living up to their pledge to . . . be honest and truthful and . . . [to] strive for personal and institutional integrity at Florida State University.  (Florida State University Academic Honor Policy, found at


Students with disabilities needing academic accommodation should:
(1) register with and provide documentation to the Student Disability Resource Center; and
(2) bring a letter to the instructor indicating the need for accommodation and what type.  This should be done during the first week of class.

This syllabus and other class materials are available in alternative format upon request.

For more information about services available to FSU students with disabilities, contact the:

Student Disability Resource Center
874 Traditions Way
108 Student Services Building
Florida State University
Tallahassee, FL 32306-4167
(850) 644-9566 (voice)
(850) 644-8504 (TDD)
(850) 644-7164

Academic Integrity:

Remember that the goal of programming assignments and homework is to enhance your analysis, reasoning, and programming skills. Indulging in academic dishonesty defeats this purpose apart from being unfair to other students. In case you have any questions about whether an act of collaboration may be construed as academic dishonesty, please clarify the issue with the instructor before you collaborate.

All students should follow FSU Academic Honor Code. You might be assigned a grade of 'F', if you are found to have indulged in academic dishonesty.

Syllabus Changes

This syllabus is a guide for the course and is subject to change with advance notice.