📝 Linux

How SSH Actually Works (Step-by-Step for Developers)

BLOG ARTICLE Published on April 4, 2026

Written by DKForge

Source: DEV Community - Linux 1 min read intermediate

Summary

Most developers use SSH every day: ssh user@server …but very few know what’s actually happening under the hood. Let’s break it down 👇 🚀 1. TCP Connection Everything starts with a basic TCP connection between client and server. At this stage: No encryption yet Just a raw connection 🤝 2. Negotiation Phase The client and server exchange: SSH protocol versions Supported encryption algorithms Key exchange methods They agree on a secure configura...

#linux #networking #security #tutorial
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