Network Security
Packets, firewalls and detecting attacks on networks.
Beginner
Start here. No background needed beyond school maths.
Document
Beginner
↗ External site
Cloudflare Learning: Security
Plain explanations of DDoS, firewalls, VPNs, zero trust and more.
Sign up to see the source
Document
Beginner
↗ External site
Wireshark User's Guide
How to capture and read network traffic with the standard packet analyser.
Sign up to see the source