How to Set Up Passwordless SSH Login with PuTTY.

If you’ve ever logged into your VPS again and again using a password, you already know how repetitive and risky it can be. There’s a better way. In professional server environments, developers almost always use SSH key-based authentication instead of passwords. It’s faster, more secure, and honestly… once you set it up, you won’t want to go back. In this guide, I’ll walk you through how to set up passwordless SSH login using PuTTY in a simple, practical way. What Is Passwordless SSH Login? In simple terms: Instead of typing a password every time You use a private key file stored on your computer The server verifies it using a public key Think of it like this: Your server has a lock (public key), and your computer has the only matching key (private key) No password needed. Just instant access. Step 1: Generate SSH Key Pair Using PuTTYgen First, we need to create two keys: Private Key (.ppk) → stays on your PC Public Key → goes to your server Steps: Open PuTTYgen (comes with PuTTY) Under