There are about a dozen ways to configure the server side of rsync. The most 'natural' way under unix would be to configure rsh permissions with a .rhosts file. However rsh is not very secure and the SME distribution doesn't include it. The next easiest is to have sshd (secure shell) running with passwords allowed, which may already be the case on your RH system. Then you would use:
rsync -essh -av remote_host:/remote_path . and you will be prompted for the password for the remote server. If you need access as a different user on the remote side, use the form user@remote_host:/remote_path.