Keys Authentication2015/01/13

Configure SSH server to login with Keys Authentication. It is needed for it to make private key for client and public key for server.

[1]	Download 'puttygen.exe' from Putty's site.

[2]	Start 'puttygen.exe' and click 'Generate' button.

[3]	Move mouse untill progress bar will be full.

[4]	Set passphrase in 'Key passphrase' and 'Confirm passphrase'. Next, Click 'Save public key' and 'Save private key' and Save keys with a file name you want.

[5]	Open 'public_key' you saved.

Remove the first line and last line and replace the second line to 'ssh-rsa' and then remove all indention like follows.
'ssh-rsa xxxxxxxxxxxxxxxxxxxxx=='

[6]	Login with a user and put 'public_key'.

[cent@dlp ~]$

mkdir .ssh

[cent@dlp ~]$

chmod 700 .ssh

[cent@dlp ~]$

cd .ssh

[cent@dlp .ssh]$

vi authorized_keys

# Copy and Paste 'public_key'

ssh-rsa xxxxxxxxxxxxxxxx==

[cent@dlp .ssh]$

chmod 600 authorized_keys

[cent@dlp .ssh]$

su -

Password:

[root@dlp ~]#

vi /etc/ssh/sshd_config

# line 60: Change to no

PasswordAuthentication

[root@dlp ~]#

/etc/rc.d/init.d/sshd restart

Stopping sshd:

[ OK ]

Starting sshd:

[ OK ]

[7]	Start Putty and select 'private_key' like follows.

[8]	If All OK, connect to the server with keys authentication.

[9]	The Passphrase you set is required for login. After successing, it's possible to login like follows.

Matched Content