Good! I created an Amazon and Windows Linux instance, followed all the steps to generate key, import and change it via PuTTY, opened the key, requested the connection with the care of ec2-user bla bla bla, however in none of the instances I I can log in. Give time out. Via SSH (PuTTY) on LInux or via RD on Windows. It initially includes strict rules, now I allow any full access on both, and nothing! Can anyone help? Thanks for the help.