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01

Foundation · stage 1 of 10

Networking & Protocol Foundations

IPv4, subnetting and CIDR, the OSI model layer by layer, routing and switching configured live in Cisco Packet Tracer, then DNS and the transport layer. Every attack later in the programme is an abuse of something in this module.

Beginner12 sessions16 h 10 mSessions 1–12
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This module is included — it is not sold on its own.

// Sessions in this module

4 sections · 12 sessions · 16 h 10 m

Addressing and subnetting7 h 4 m

Where every security career starts. Nothing here assumes you have seen a network diagram before.

  1. 01Orientation · How the programme runs and what you will build3:13:13
  2. 02IPv4 · The classes of IPv41:28:06
  3. 03Subnetting1:32:16
  4. 04Class A and Class B subnetting · CIDR50:10
Layers, ports and protocols2 h 19 m
  1. 01The OSI model · Physical and Data Link layers58:06
  2. 02OSI layers · Ports and protocols1:20:42
Routing and switching, built in Cisco Packet Tracer4 h 8 m

Configured device by device on screen, not described on a slide.

  1. 01Network facts · Routers · Introduction to Cisco Packet Tracer1:06:24
  2. 02Routing protocols · Switches and LANs in Packet Tracer1:07:21
  3. 03HTTP request methods · HTTP response codes · Serial cable in Packet Tracer57:39
  4. 04Cisco Packet Tracer · Router, switch and end-device configuration56:20
DNS and the transport layer2 h 40 m
  1. 01DNS · Types of DNS · DNS queries · How the internet actually works1:29:27
  2. 02DNS records · Mail spoofing and its mitigation · TCP and UDP1:10:16

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