Thompson Teaches
Cyber Security Powerhouse
This order is built the way Malachi recommends: networking fundamentals first, then Security+ domains in exam weight order. Tap each phase to expand.
Check off topics as you study. Each topic links to the exact Professor Messer video — stuck? Tap 💡 Need help? for another teacher's explanation. Open the 📝 My Notes tab in any domain to jot notes that save to your account. Progress saves automatically.
Learn what a network actually is — hosts, clients, servers, the difference between LAN and WAN, and how devices communicate using shared media.
The OSI model is tested heavily on Security+. Know each layer, what protocols live there, and how data is encapsulated as it travels down the stack.
IP addressing and subnetting will appear on both CCNA and Security+. Understand private vs public ranges, how CIDR works, and IPv6 address types.
Know the protocols, their ports, and whether they're secure or insecure. Security+ will give you scenarios and ask which protocol to use.
Understand the difference between each network device and where they operate in the OSI model. This knowledge is essential for Security+ architecture questions.
Wireless security is a major Security+ topic. Know why WEP is broken, how WPA3 improves on WPA2, and the attacks that target wireless networks.
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