Comparative Discussion Network Security Assignment

Research and study the available software and hardware techniques to deter, if not eliminate, computer systems attacks. Write a comparative discussion paper on five (5) such techniques.  Deliverables:  5 double spaced page 

Pay attention to the following:

1. Encryption techniques (DNSSEC, IPSec, PGP, S/MIME)
2. Techniques for fault detection, isolation and repair
3. Intrusion Detection and Network Forensics
4. Firewalls (DMZ)
5. Secure network infrastructure services: DNS, NTP, SNMP

Add relevant resources: 

Textbook: Guides to Computer Network Security By Joseph Kizza