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Module 6·15% of the exam

Security Fundamentals

Threats, AAA, ACLs, port security, VPNs, wireless security.

The defensive side of networking. Understand the common threat categories, configure AAA and 802.1X, write standard and extended ACLs without breaking your network, and recognize the moving parts of a site-to-site IPsec VPN.

5 chapters2h reading15% weightPro module
ARIA· module 6 intro

Welcome to module 6. Threats, AAA, ACLs, port security, VPNs, wireless security. I'll meet you again at the top of every chapter — this module's worth roughly 15% of the exam, so don't rush it. Pick chapter 6.1 below to start.

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Anyone can browse the syllabus. To actually read chapter content, you'll need a free account — that opens Module 1: Network Fundamentals end-to-end, the lab, and ARIA. Modules 2–8 unlock with Pro.

  • Read every chapter in Module 1 — Network Fundamentals
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  • Use the lab with up to 3 devices
  • See the full course syllabus + chapter titles
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  1. 6.1

    Threats, AAA, and 802.1X

  2. 6.2

    Port security and DHCP snooping

  3. 6.3

    Standard and Extended ACLs

  4. 6.4

    VPN basics — site-to-site and remote access

  5. 6.5

    Wireless security — WPA2 vs WPA3

Module 5
IP Services
Module 7
Automation & Programmability
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A browser-native network lab and networking course, beginner to advanced. Free account opens Module 1 + a 3-device lab; Pro unlocks the rest.

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  • 2 · Addressing
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