Fedora 13
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Keys Authentication2010/05/25

  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] Run '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 first line and last line and replace second line to 'ssh-rsa' and then remove all indention like follows.
'ssh-rsa xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx=='
[6] Login with a user and put 'public_key'.
[fedora@dlp ~]$
mkdir .ssh

[fedora@dlp ~]$
chmod 700 .ssh

[fedora@dlp ~]$
cd .ssh

[fedora@dlp .ssh]$
vi authorized_keys

# Copy and Paste 'public_key'.

ssh-rsa xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx==

[fedora@dlp .ssh]$
chmod 600 authorized_keys

[fedora@dlp .ssh]$
su -

[root@dlp ~]#
vi /etc/ssh/sshd_config

# line 64: Change


[root@dlp ~]#
/etc/rc.d/init.d/sshd restart

Stopping sshd:
[  OK  ]

Starting sshd:
[  OK  ]
[7] Run Putty and select 'private_key' like follows.
[8] All OK, connect to the server with keys authentication.
[9] Passphrase you set is required to input fpr login. After inputiing correct one, it's possible to login like below.
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