One of my clients provided me .ppk file to connect to his server using ssh. As I am a Ubuntu user, I need a key that supports the terminal command. So I decided it convert to a .pem file. I am sharing the steps to convert PPK to PEM format on the Linux terminal using a putty-gen command-line utility.
The Windows Users may like: How to convert a PEM file to PPK?
Method 1: Convert PPK to PEM in Linux
Use the below steps to install the required packages and convert PPK to a pem file.
Step 1 –First of all, install the putty tools on your Linux system using below command.
sudo apt-get install putty-tools
Step 2 –Now, convert the ppk file to pem file using puttygen command line tool.
puttygen server1.ppk -O private-openssh -o server1.pem
Step 3 –Change the .pem file permissions. Set the read-only permissions to the owner of the file, remove any permission to group and other. Otherwise ssh will refuse this key for use.
chmod 400 server1.pem
Step 4 –Finally, connect to your remote Linux server with ssh using this pem key.
ssh -i server1.pem [email protected]
Method 2: Convert PPK to PEM in Windows with PuTTYgen
Windows users can also convert a PPK file to PEM using PuTTYgen utility. Assuing you already have downloaded Puttygen from its official download site.
Next, follow the steps to convert PPK to PEM:
- Start PuTTYgen
- Under File menu, click Load private key.
- Select your .ppk file, and then choose Open.
- Now, under the Conversions menu, click Export OpenSSH Key.
- Set a new name with “.pem” extension