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How to Use PuTTY for SSH Key-Based Authentication

In this guide, we will show you how to use PuTTY for SSH key-based authentication, allowing secure access to your server while enhancing your connection's safety.

Secure Shell (SSH)​

SSH, or Secure Shell, is a protocol used to securely access and manage a computer or device over an unsecured network. It provides a secure channel in an otherwise insecure environment, ensuring confidentiality and integrity of data.

Setup PuTTY for SSH Key-Based Authentication​

PuTTY: Secure SSH Connectivity for Windows​

PuTTY is a widely used, open-source GUI tool that facilitates secure SSH connections. It enables users to establish encrypted tunnels for safe communication between Windows computers and remote servers.

Download PuTTY​

PuTTY can be downloaded from the official website. Follow these steps to install it:

  1. Visit the official PuTTY download page.
  2. Choose the appropriate installer for your Windows version.
  3. Download and run the installer to complete the installation process.

Use PuTTY for a Basic Connection​

  1. Open PuTTYgen.
  2. Click on the File menu.

Select Your SSH Key​

  1. Choose the All Files option.
  2. Locate and select your SSH key file.

After selecting the SSH key, you will see content similar to the following:

Save the Private Key​

  1. Press OK.
  2. Save the private key when prompted:
    • Click Yes.
    • Provide a name for your private key file and save it securely.

Naming and Saving Your Folder​

Ensure your folder has a descriptive and precise name that reflects its contents. Follow these steps to save and name your folder properly:

  1. Right-click in your desired directory.
  2. Select New > Folder from the context menu.
  3. Type the folder name. Use a name that describes the folder's purpose or content.
  4. Press Enter to save the folder with your chosen name.

Remember, a well-named folder facilitates easier access and organization of your files.

To Start Using PuTTY​

  1. Open PuTTY.
  2. Enter your IP Address in the Host Name field.
  3. Navigate to Authentication > Credentials.
  4. Select your key in the browser.
  5. Click Open.

Logging In​

When prompted, provide your username:
Username: Your Username

Congratulations! You are now securely connected to your server using PuTTY.