config /etc/ssh/sshd_config

$ sudo vim /etc/ssh/sshd_config

AuthorizedKeysFile  %h/.ssh/authorized_keys

$ sudo /etc/init.d/ssh reload
					

ssh-keygen

neo@master:~$ ssh-keygen
Generating public/private rsa key pair.
Enter file in which to save the key (/home/neo/.ssh/id_rsa):
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /home/neo/.ssh/id_rsa.
Your public key has been saved in /home/neo/.ssh/id_rsa.pub.
The key fingerprint is:
98:35:81:56:fd:b5:87:e4:94:e4:54:b8:b9:0a:4e:80 neo@master
					

authorized_keys

$ mv .ssh/id_rsa.pub .ssh/authorized_keys
					

or

$ cat .ssh/id_rsa.pub > .ssh/authorized_keys
					

PuTTYgen

Load an existing private key file

to click 'Load' button and then open 'id_rsa'

'Save public key' and 'Save private key'

closing PuTTYgen

Pageant

opening Pageant

to click mouse right key and then select 'Add Key', opening above private key.

Putty

Host Name: your ip address

Connection -> Data -> Auto-login username: your username

Connection -> SSH -> Auth -> Allow agent forwarding, you must checked it

Now, You may click 'Open' to login linux system