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Cyber Security Academy · Lesson

DMZ Design

Protect public services.

What Is a DMZ

A DMZ (demilitarized zone) is a network segment that sits between the untrusted internet and the trusted internal network.

It holds services that must be reachable from outside.

Why a DMZ Exists

Public services like web and mail servers must accept connections from the internet.

Placing them in a DMZ means that if one is hacked, the attacker is still separated from your internal systems.

All lessons in this course

  1. Firewall Types
  2. Rules and Policies
  3. Network Segmentation
  4. DMZ Design
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