[CentOS] Securely backing up Linux machines to NAS?

Jake wrote:
> You'll want to look into rsync over ssh with ssh key-based authentication.
>   

indeed, note, the Terastation is in fact an embedded linux box and quite 
'hackable'.    first link on google for: terastation ssh rsync,  says 
its easy to enable ssh and rsync, see 
http://bigdiver.wordpress.com/2008/07/24/installing-rsync-and-unison-on-the-buffalo-terastation-live/