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Free module

Network security

Learn network security hands on: attack surface, firewall rules, segmentation, TLS, SSH and VPNs, and spotting attacks, in real labs.

5 lessons280 min lessonCybersecurity

The lessons

Each lesson is free to read in full. Create a free account to run its commands in a live lab and to sit its quizzes and tasks.

  1. 1 · Virtual machine lab

    Attack surface and open ports

    I can list what a network exposes.

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  2. 2 · Virtual machine lab

    How firewall rules work

    I can write and read firewall rules.

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  3. 3 · Virtual machine lab

    Network segmentation and zones

    I can keep parts of a network apart.

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  4. 4 · Virtual machine lab

    Secure network protocols (TLS, SSH, VPN)

    I can pick a protocol that protects the traffic.

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  5. 5 · Virtual machine lab

    Spotting attacks in traffic and logs

    I can recognise an attack in traffic and logs.

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Worked in a real lab

Every lesson of this module is worked in a lab started for you alone. The labs it uses:

Teaching a class? Set this module for your students with a teacher guide, marked assignments and a lab for every student.