rsync-backup automates the process of backing up multiple systems to one or
more backup servers. It focuses on making the process secure. It encrypts the
backup going across the wire, only ships changed data, runs the server as root
to preserve permissions and ownership, keeps people from seeing each other's
backups, and doesn't require the server to trust any files sent from the
clients. It doesn't ship password files, key files, nor other sensitive files
across the wire, but backs them up locally instead. Admins may use one key for
everyone (backups named after the client IP) or allow named backups (when a
machine may change IP or when multiple independant backups may need to be made
from one machine).
