Convert .pem to .ppk using PuTTY to connect to Amazon EC2 instance from Windows. Amazon provides a .pem private key which cannot be directly used in PuTTY.
Here’s how you can connect to MySQL on Amazon EC2 from Windows without opening any port.
Here’s how you can connect to Amazon EC2 Linux instance from Windows laptop using PuTTy
Here’s how you can connect to Amazon EC2 Linux instance from your Linux/Mac laptop, using SSH.