Network security


This module is concerned with the protection of data transferred over commercial information networks, including computer and telecommunications networks.

After an initial brief study of current networking concepts, a variety of generic security technologies relevant to networks are studied, including user identification techniques, authentication protocols and key distribution mechanisms. This leads naturally to consideration of security solutions for a variety of types of practical networks, including LANs, WANs, proprietary computer networks, mobile networks and electronic mail.

Topics covered

  • Introductory Network Concepts and ISO
  • Introductory Network Security Concepts
  • Biometric Technologies
  • Introduction to Secure Protocols
  • Secure Protocols and VPNs: IPSEC
  • Secure Protocols and VPNs: TLS and SSH
  • E-mail Security
  • Wireless Networking
  • Firewalls
  • Mobile Security: GSM
  • Intrusion Detection Systems
  • SIEM tools

Learning outcomes

If you complete the module successfully, you should be able to:

  • understand of the fundamentals of the provision of security in information networks.
  • appreciate of some of the problems that arise in devising practical solutions to network security requirements.


This module is assessed by a two-hour unseen written examination.

Essential reading

  • Network Security Essentials: Applications and Standards (Stallings)
  • Computer Networks & Internets (Comer)