SSH Without a Password

SSH Without a Password [原文链接]

Notes:

• The system from which the ssh session is started via the ssh command is the client.
• The system that the ssh session connects to is the server.
• These steps seem to work _disibledevent=>OpenSSH.
• The steps assume that a DSA key is being used. To use a RSA key substitute 'rsa' for 'dsa'.
• The steps assume that you are using a Bourne-like shell (sh, ksh or bash)
• Some of this information came from:
  http://www.der-keiler.de/Mailing-Lists/securityfocus/Secure_Shell/2002-12/0083.html

Steps:

1. On the client run the following commands:
   $ mkdir -p $HOME/.ssh $ chmod 0700 $HOME/.ssh $ ssh-keygen -t dsa -f $HOME/.ssh/id_dsa -P ''
   This should result in two files, $HOME/.ssh/id_dsa (private key) and $HOME/.ssh/id_dsa.pub (public key).
2. Copy $HOME/.ssh/id_dsa.pub to the server.
   
3. On the server run the following commands:
   $ cat id_dsa.pub >> $HOME/.ssh/authorized_keys2
   $ chmod 0600 $HOME/.ssh/authorized_keys2
   Depending _disibledevent=> ssh(1)
4. ssh-keygen(1)
5. ssh_config(5)

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