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Chapter 01 · Networking

How Networks Talk

How data moves across the internet and inside your network — TCP/IP, DNS, subnetting, routing, VPNs and firewalls, all in plain English.

TCP/IPDNSSubnettingRoutingVPNFirewalls
Networking Articles

All guides in this chapter

📅 2026-07-21⏱ 13 min read

BGP and OSPF Explained: Advanced Routing Protocols for Network Engineers

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📅 2026-07-20⏱ 6 min read

What is a Firewall and Why Every Network Needs One

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📅 2026-07-06⏱ 6 min read

How Does a VPN Work? Explained Simply for Beginners

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📅 2026-07-05⏱ 6 min read

What is DNS and How Does it Work? Step-by-Step Guide for Beginners

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