SSH Mastery: OpenSSH, PuTTY, Tunnels and Keys by Michael W Lucas

Author:Michael W Lucas [Lucas, Michael W]
Language: eng
Format: epub
Publisher: Tilted Windmill Press

As of this writing, the most common type of user key is a RSA key. OpenSSH stores your RSA public key in the file $HOME/.ssh/id_rsa.pub. PuTTY's key generator lets you name your key files, but we'll assume you use the file name id_rsa.pub to make the examples easier.

To use your public key, you must copy it to the authorized_keys file in your account on the server. You can select and copy the public key in your graphic interface and paste it into the $HOME/.ssh/authorized_keys file on your server, but this can introduce errors. Uploading the public key file via SFTP or SCP and then concatenating it onto authorized_keys is more reliable. Remember, each key must be on one and only one line in authorized_keys. More than one of my simple cut-and-paste attempts have turned to tears, then to threats of starting a new career as a llama smuggler, only to end in a manic-depressive binge at the nearest gelato shop. Have the machine copy the file. It's better at it than you.

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