Connecting to Amazon EC2 Linux instance using PuTTY

March 16, 2012

EC2 private key file has extension .pem , which cannot be used by PuTTY. So we have to convert .pem to .ppk format which PuTTY accepts.  Listing the steps below to do it,

  • Download PuTTYgen –
  • Launch PuTTYgen, Using the ‘Import’ command from the ‘Conversions’ menu, load the .pem file of EC2 and press  ‘Save Private Key button’. Ignore warning about leaving the passphrase blank.  The file will be saved with .ppk extension
  • Now launch PuTTY, go to SSH panel, ‘Private key file for authentication’ load the .ppk file, and now you can use PuTTY to connect to the EC2 instance.


Using Ubuntu GUI remotely using NoMachine or Xming from Windows 7

March 12, 2012

Solution 1: NoMachine


Solution 2: Xming



I am using  NoMachine, as Xming( was slow even after using SSH compression. And the latest version of Xming(, which possibly has fixes for slow GUI ( was not  available for free.