About the course

This course helps students understand the OSI model in a practical way that connects directly to hacking and cybersecurity. Instead of treating the model like theory to memorize, the course shows how each layer affects communication, troubleshooting, packet flow, and attack surfaces. Students will learn what each layer does, how devices and protocols fit into the model, and why this knowledge matters in real technical work.

Curriculum

4 Chapters · 23 Lessons

  1. 1

    Chapter 1

    1. (Included in full purchase)

      What the OSI Model Really Is and Why Hackers Should Care

    2. (Included in full purchase)

      The 7 Layers in One Clean Mental Picture

    3. (Included in full purchase)

      OSI vs the Real Internet Stack (TCP/IP) and Why OSI Still Matters

    4. (Included in full purchase)

      Encapsulation and Decapsulation (Why Packets Contain Multiple Layers)

    5. (Included in full purchase)

      OSI as a Troubleshooting Ladder (The Operator Method)

    6. (Included in full purchase)

      Mapping Real Tools to OSI Layers

  2. 2

    Chapter 2

    1. (Included in full purchase)

      Layer 1 Physical: What Can Break Before Packets Even Exist

    2. (Included in full purchase)

      Layer 2 Data Link: MAC Addresses, Switching, ARP, Local Delivery

    3. (Included in full purchase)

      VLAN Basics and Segmentation Mindset

    4. (Included in full purchase)

      Layer 2 Risk Mindset

    5. (Included in full purchase)

      Reading ARP and Neighbor Tables Like an Operator

  3. 3

    Chapter 3

    1. (Included in full purchase)

      ICMP Beyond Ping: Unreachable and TTL Exceeded

    2. (Included in full purchase)

      Traceroute: Path Visibility

    3. (Included in full purchase)

      NAT: Why Your Private IP Isn’t Public

    4. (Included in full purchase)

      What Layer 3 Failures Look Like in Real Life

    5. (Included in full purchase)

      Layer 4 Transport: TCP vs UDP

    6. (Included in full purchase)

      TCP Handshake: What It Proves and Why It Matters

    7. (Included in full purchase)

      TCP States and Flags Beginners Must Understand

    8. (Included in full purchase)

      Ports, Flows, and Process Ownership

    9. (Included in full purchase)

      Transport Failures: Timeout vs Refused vs Reset (Reading Failure Personality)

    10. (Included in full purchase)

      Why Firewalls Often Operate Here (Allowed vs Filtered Reality)

  4. 4

    Assessment

    1. (Included in full purchase)

      Quiz 1

    2. (Included in full purchase)

      THEORY ASSESSMENT (20 QUESTIONS)

Join the course now and learn the OSI model in a way that actually makes sense for hacking, networking, and cybersecurity.

Learn how data moves across networks layer by layer and why every hacker needs to understand the OSI model.

$50.00

Enroll now