This unit investigates processes of security at local and network levels, including security policies and practices, software, hardware and human issues.

Content includes: physical and system security; cryptosystems; authentication and authorization; Access Control List (ACL); firewalls and port security; secure and insecure web protocols (e.g. telnet, ssh); secure email protocols (e.g. PGP and S/MIME); intrusion detection and system hardening; security in Virtual Private Networks (VPN), cloud computing, and databases.

Unit details

Study level:
Credit points:
Unit code:


NIT1104 - Computer Networks

Learning Outcomes

On successful completion of this unit, students will be able to:
  1. Audit a system for security vulnerabilities;  
  2. Manage and use system security and logging tool;  
  3. Identify strengths and weaknesses in security products;  
  4. Apply security tools to strengthen a networked system;  
  5. Analyse a system for deploying the most appropriate security solution;  
  6. Design and implement a security solution given a set of constraints.  


Assessment type Description Grade
Laboratory Work Practical Knowledge Test (one hour) 20%
Report Project report (2500 - 3000 words) 30%
Examination Final Written Examination (3 hours) 50%

Required reading

Introduction to Network Security: Theory and Practice 2nd
Jie Wang, Zachary A. Kissel (2015)

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