Converting Your PEM to PPK Using PuTTYgen [For aMiSTACX and Windows Clients] PuTTY does not natively support the private key format (.pem) generated by the AWS console for SSH to EC2s. PuTTY has a tool named PuTTYgen, which can convert keys to the required PuTTY format (.ppk). You must convert your private key into this… Continue reading How to generate a PPK file for SSH and SFTP