A structured and beginner-friendly guide to the fundamentals of computer networking covering everything from IP addressing, subnetting, routing, and protocols to network security and troubleshooting.
sockets routing switching beginner-friendly ports tcp-ip network-protocols network-security network-engineering subnetting computer-networking data-communication network-devices osi-model network-troubleshooting network-infrastructure network-services networking-fundamentals ip-addressing network-education
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Updated
Feb 8, 2026 - CSS