Key Based SSH Authentication on a Linux Host using Putty

In order to be more secure, I have decided to use a key instead of a password authentication. I'm using putty to connect to my linux server. I have used the following steps in order to configure it:

• Generate a public and private key with PuTTYgen (click on Generate):

The key is generated by mouving randomly the mouse.

• Save the public and private key.
• The next step is to add the public key on the server:

mkdir ~/.ssh
chmod 700 ~/.ssh

• Paste the public key to the following file:

vim ~/.ssh/authorized_keys
chmod 600 ~/.ssh/authorized_keys

• Configure the putty session:
• Create a new session and save it:

• Select data and configure 'Auto-login' (usersame used by the created key):

• Configure the path to the private key:

After this, if you open the session, you will be directly prompted to the linux host.