TechTokAI on Instagram: "🔐 SSH (Secure Shell) – Complete Notes 1️⃣ What is SSH? SSH (Secure Shell) is a secure protocol used to: Connect to remote servers Run commands remotely Transfer files securely 👉 It works over encrypted communication, unlike Telnet or FTP. 📌 Default Port: 22 2️⃣ Why SSH is Needed? Without SSH: Data can be read or hacked Passwords travel in plain text With SSH: 🔒 Encrypted connection 🛡️ Secure authentication 🚀 Fast remote access 3️⃣ Where SSH is Used? Linux servers C