Como convertir un PEM a PPK para que putty entre a un servidor linux
Primero ejecutamos All Programs > PuTTY > PuTTYgen Under Type of key to generate, select SSH-2 RSA. Click Load. By default, PuTTYgen displays only files with the extension .ppk. To locate your .pem file, select the option to display files of all types. Select your .pem