[CentOS] Setting up rsync

About a year and a half ago, someone answered a request on how to set up 
rsync so that the encryption was automatically setup (wish I knew more 
about the technical aspects).  It has been in use for the time since 
then and it has been great.  Now I have to replace the destination 
computer and setting up, what I call the encryption part, is the part I 
have forgotten how to do.  This is the command line:

/usr/bin/rsync -av -e ssh /home/ 192.168.0.22:/home/

Is there anyone who can translate what I am trying to do?

Todd

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