Outcome 3:Understand Security Threats and Protection

Table of Contents

1. Introduction
2. Security threats
3. Protection Methods
   1. Browser settings
   2. How to change Settings
   3. E-mail filters
   4. Anti-Malware Software
   5. Security Zones
   6. Public and Private
   7. Demilitarised Zone (DMZ)
   8. Implementing a DMZ
   9. Intranets and Extranets
   10. VPN Activity
   11. Intrusion Detection Systems
4. Summary
5. SAQ 1

Demilitarised Zone (DMZ)

In commercial environments, a simple firewall topology is generally not enough. Instead most organisations try to separate those services that require public access away from the private internal network. These public services are placed in a special sub network known as a demilitarised zone.

[D]

Resident Services

Demilitarised zones can contain a number of services including

Internet Services

Remote Connection Services

Wireless Services

Dummy networks

Next: Implementing a DMZ