When building a Linux machine, sometimes it becomes necessary to set up cron jobs to transfer files or logs from one machine to another on a regular basis.  If this is the case, I recommend setting up password-less SSH from one machine to the other.  I decided to post about this here because it always took me a while to find the right commands or tutorial online to get it to work.  Finally I found a great post from the Debian Administration team.  Here is quick summary/tutorial.

To make passwordless connections, you first need to generate the appropriate SSH keys on the connecting computer.

There we go, password-less SSH should be working one-way.  If you wish to set it up the other direction, just run the same commands from the other machine (replacing the username@target).

For a more detailed tutorial, check out the Debian post about it.