Log in to a Linux server with an SSH private key using PUTTY

You need the following software to complete this task:

1. PuTTY: A client for managing SSH sessions
2. PuTTYgen: A tool for managing and creating SSH key pairs

Note: These instructions apply to using PuTTY on the Windows® operating system.

Save your private SSH key to a text file

• As a part of your deployment, your service provider might have provided you with an SSHprivate key for you to use to authenticate against your newly deployed Linux servers.
• You must save this private key to a text file. This typeof file is called a key file.
• Open a text editor, paste your SSH private key, and save the file.
• You need to include all of the text  in your key file.

Load your SSH private key in PuTTY Key Generator

Use the following steps to load your SSH private key in PuTTY Key Generator:

1. Launch PuTTY Key Generator.
2. In the Actions section, click Load to load an existing private key
   Change the file type to search for to All Files.
3. Select the key that you saved to a text file earlier and click Open.

A confirmation displays after PuTTYgen successfully imports the private
key. Click OK to dismiss the message.

4. Enter a unique key passphrase in the Key passphrase field, then enter
   the same passphrase again in the Confirm passphrase You are
   prompted for this passphrase whenever you log in to a server by using your
   SSH private key.
5. Click Save private key, then enter a file name in the Save
   private key as dialog box to save it for use with PuTTY.

Note: We strongly recommend that you keep the default settings.

Log in to PuTTY by using your SSH private key

Use the following steps to log in to PuTTY by using your SSH private key:

1. Enter a name for the session and click Save.

Note: You can use any name that you want.

2. Click Connection > Data in the left navigation pane and set the
   Auto-login username to root.
3. Click Connection > SSH > Auth in the left navigation pane and
   configure the SSH private key to use by clicking Browse under Private
   key file for authentication.
4. Navigate to the location where you saved your SSH private key file, select
   the file, and click Open.
5. The file path for the SSH private key file now displays in the Private
   key file for authentication field.
6. Click Session in the left navigation pane, then click Save in the
   Load, save or delete a stored session section.
7. Click Open to begin your session with the server.
8. If you saved your SSH private key with a passphrase, you’re prompted to
   enter that passphrase. An alert displays indicating that the server’s host
   is not cached. Click Yes to continue the connection.