Lecture: Network Security

You want to know how today´s attacks against networks work? You want to learn about countermeasures and how to secure your network? Then this is your lecture! The lecture introduces actual threats on and attacks against computer networks (e.g. worms, bot-nets). You will gain a practical insight into their functioning and damage potential. During the lecture, you will be hacking systems yourself, but also learn about security protocols and state-of-the-art defense measures, including Intrusion Detection Systems and Honeypots. So, if you are interested in network security and willing to work, we would be happy to see you in the first lecture.




  • Term: Master Computer Science, Diploma (Graduate)
  • Requirements: Content of "High Performance Networking" is prerequisite. Basic programming skills (see below)
  • Faculty: MA-INF 3201; old DPO: B,C; new DPO: B
  • Effort: 2.0 L + 1.0 E / 4.0 CP
  • Follow-up/Side-events: A seminar will take place at the end of the lecture period. Subsequent to lectures "Data Communication and Internet Technology" and "Network Security" participating in a lab is possible.

Required Programming Skills

The lecture Network Security teaches security from a very practical point of view. This includes hands-on exercises, hacks and the development of countermeasures.

For students participating in the lecture it is mandatory to have basic programming skills. We are providing a self-test, which shows the level of your skills and tells you if you are capable to deal with the practical tasks.

Self-Test: link

Application for an account in the Network Security Lab

To apply for an account in the Network Security Lab, please write an e-mail to Daniel Plohmann.
Your e-mail should contain your full name and your usual unix/windows login name used in the university network.
With your application, you also accept the Terms of Use.

Deadline for application is Wednesday, 21.04.2010, 11:00.

Slides and Presentations

Access to the files requires a username and password. Both will be announced in the first lecture.

0 – PrefaceSlides 1-27 

1 - Introduction
Slides 1-23
2 - Internet WormsSlides 1-60
2b - Bot Nets Slides 1-11

3 - Protocol Attacks

Slides 1-35
Worm ChallengeSlides 1-7
4 - Cryptography Slides 1-73
5 - Secure Channels Slides 1-27
6 - Authentication Slides 1-39
7 - Security Protocols Slides 1-38
8 - Network Infrastructure Slides 1-44
9 - Firewalls Slides 1-39
10 - Attack VectorsSlides 1-52


Assignment Sheets

The PDF-Files can be viewed and printed with Acrobat Reader. The program is undefinedavailable for free and installed on nearly all hosts of the institute.

Information on Tutorials/Exercises

PDF-file Supplementary Slides Further Information
sheet3 attack trace
sheet4 pcap file
sheet5 Faust