Understanding SSH: Keys, Encryption, and Practical Applications

SSH (Secure Shell) is the gold standard for securely accessing and managing remote servers. In this video, we’ll break down how SSH works under the hood, why it replaced Telnet, and how developers and DevOps teams use it every day.

💡 **What you'll learn:**
- How SSH establishes a secure, encrypted connection
- SSH vs. Telnet — the postcard vs. locked briefcase analogy
- Key-based authentication vs. passwords
- Real-world examples: AWS EC2 `.pem` files & GitHub SSH keys
- SSH port forwarding (tunneling) for databases & private tools

Whether you’re deploying code, managing servers, or setting up secure automation, this guide will make SSH clear and approachable.

⏱️ Timestamps
00:00 Intro — Why SSH Matters
00:42 What is SSH & Why Use It?
01:35 SSH vs Telnet (Secure vs Insecure Shell)
02:26 How SSH Works — Encryption & Key Exchange
04:15 Authenticating with SSH — Keys vs Passwords
05:18 Real-World Example: AWS EC2 .pem File
06:05 Real-World Example: GitHub SSH Keys
06:42 SSH Local Port Forwarding (Tunneling)

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AWS Certification:
AWS Certified Cloud Practioner: https://youtu.be/wF1pldkQrOY
AWS Certified Solution Architect Associate: https://youtu.be/GzomXNLFgkk
AWS Certified Solution Architect Professional: https://youtu.be/KFZrBxSA9tI

#SSH #SecureShell #SystemDesign #Cybersecurity #RemoteAccess #Encryption #Authentication #PortForwarding #Telnet