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4 of 58 lessons about Networks, intermediate level Show all lessons
Data security and encryption
How data is kept unreadable to anyone who should not see it: encryption, certificates, TLS and hashing.
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
- Public IP vs private IP addresses A public address can be reached from anywhere. A private one only works inside your office. What that means for remote access and hosting. Intermediate 3 min read
- Router vs switch vs access point: what’s the difference? A router joins your office to the internet, a switch connects wired devices, and an access point provides Wi-Fi. How to tell which one you need. Intermediate 3 min read
- What is a VLAN? A VLAN splits one office network into several separate ones on the same cables. What it is used for, and the equipment it needs. Intermediate 3 min read
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