rsync+ssh how to

[Jianping Zhu <zjp arches uga edu>]

I am try to following the link
http://killyridols.net/rsyncssh.shtml
to set up rsync+ssh how to use rsync+ssh to do backup

I met some problems. in the link it says:
-----------------------------------------------------------------
   1. make sure ssh and rsync are installed on both computers
   2. ssh-keygen -t dsa as root
   3. choose a location other than /root/.ssh/id_dsa (ex.
       /root/.ssh/remotehost.id_dsa)
   4. enter a BLANK passphrase
   5. write a file called config inside /root/.ssh/ with options like
these

Host remotehost
 User root
 Compression yes
 Protocol 2
 RSAAuthentication yes
 StrictHostKeyChecking no
 ForwardAgent yes
 ForwardX11 yes
 IdentityFile /root/.ssh/remotehost.id_dsa

--------------------------------------------------------------



My question is: 2 is for both server/client computers or just for server?
                how about 3?

What remotehost should be?

Thanks

--------------------------------
Jianping Zhu
Department of Computer Science
Univerity of Georgia 
Athens, GA 30602
Tel 706 5423900
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