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Short lessons that explain one thing properly. Search for a word, or pick a subject and read it through from the basics.
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4 of 58 lessons about Networks, beginner level Show all lessons
Cyber security fundamentals
How attacks work, in plain words: ransomware, phishing, malware and the flaws they use.
1 of 8 lessons shown
Networks and business IT
The equipment in the comms cupboard and what it does: addresses, routers, firewalls, VLANs and VPNs.
3 of 6 lessons shown
- What is an IP address? An IP address is the number that tells the internet where a device is. What IPv4 and IPv6 look like, who hands addresses out, and what to ask. Beginner 3 min read
- What is a firewall? A firewall decides which network traffic may pass and which is blocked. The two kinds, what a firewall cannot stop, and what to check on yours. Beginner 3 min read
- What is a VPN? People use “VPN” for two different things: a secure link to the office network, and a privacy service. What each one does and does not do. Beginner 3 min read
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