Issue with Adding Servers Using Putty Generated Private Key Pair (PPK)

Overview: This article describes how to convert Putty-generated private key pairs (.ppk) to OpenSSH format for compatibility with Ezeelogin and other systems.

To convert to OpenSSH format, you can use PuttyGen.

Step 1: Download and Install PuttyGen

• Visit http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html and download PuttyGen.
• Install PuttyGen on your system.

Step 2: Open PuttyGen and Load Your .ppk File

• Launch PuTTYgen.
• Click on "Load" under Actions.
• Navigate to your .ppk file and select it.

• Click "Open" to load the file.

Step 3: Export the Key in OpenSSH Format.

• Once the key is loaded in PuTTYgen.
• Go to Conversions in the top menu.
• Choose Export > OpenSSH Key.

                                                                                   

Step 4: Confirm Export Without Passphrase

• PuTTYgen may warn you about saving the key without a passphrase. Click "Yes" to proceed.

Step 5: Name and Save the Key

• Name the file as desired and add the .pem extension (e.g., mykey.em).
• Choose the location where you want to save the file.

Step 6: Convert Using Command Line (Unix/Linux)

• If you prefer using the command line on Unix/Linux:
  • Install PuTTY tools if not already installed:

RPM-based (CentOS):

Dpkg-based (Ubuntu/Debian): 

• Convert the .ppk file to .pem format using puttygen.

Related Articles:

Connection was closed by the remote host in Putty.

Connect Jumpserver using putty.

Prevent the putty window from closing during ssh.