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Network security
Encryption of files and firewalls are just some of the security measures that can be used in security. This free course, Network security, which assumes you have a substantial knowledge of computing, helps to explain the intricacies of the continually changing area of network security by studying the main issues involved in achieving a reasonable degree of resilience against attacks.
Course learning outcomes
After studying this course, you should be able to:
- identify some of the factors driving the need for network security
- identify and classify particular examples of attacks
- define the terms vulnerability, threat and attack
- identify physical points of vulnerability in simple networks
- compare and contrast symmetric and asymmetric encryption systems and their vulnerability to attack, and explain the characteristics of hybrid systems.
First Published: 09/08/2012
Updated: 17/03/2016
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To me this is dangerously out of date. It seems like it's adapted from lecture slides from the 90's.
Mention of SHA and MD5 for hashing, stateless firewalls, recommendation to use DES (or multiple rounds). I'm not sure if it even mentions blocking egress traffic (I'll go back and check at some point and update this if possible)
At a fundamental level the course is ok but is in need of a refresh. NAT is everywhere now and practically everything is proxied.
edit; so it does kind of describe a stateful firewall if you very generously interpret the 'circuit level gateway' description. Still suggests hosts in the 'dmz' be allowed unfettered internet access.