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

E-mail filters

All client e-mail applications and some web based e-mail applications offer facilities to filter out messages. In a networked environment filters can also be set up to prevent or limit the size of attachments.

Use the links below to examine the different types of filtering commonly available.

Address Filtering

Subject Filtering

Content Filtering

Attachment filtering.

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Activity

Examine what filtering options are available in your e-mail applications.

Next: Anti-Malware Software