Assuming that you want to synchronize directory /home/user on machine X_RSYNC_CLIENT with directory c:\backup on machine CWRSYNC_SERVER :

On CWRSYNC_SERVER :

- Install cwRsync Server with openssh component
- Start RsyncServer and OpenSSHD services
- Use Prep a Dir for Upload wizard for the directory c:\backup
- Add a new module to rsyncd.conf :

[backup]
path = /cygdrive/c/backup
read only = false
transfer logging = yes

on X_RSYNC_CLIENT :

- Copy private key from CWRSYNC_SERVER to X_RSYNC_CLIENT and make it accessible only by you
- Use shell script below after having it updated according to your needs:

#!/bin/bash # Secure Channel Wrapper for connection to cwRsync servers from Linux/Unix clients # v1.0 - Initial version, Sep 2005, Tevfik K., http://itefix.no # Customize variables below according to your needs # identity: private key file for cwRsyncServer service account (available from Start Menu) identity='cwrsync' # localport: local port for forwarding localport=9119 # remoteport: termination port (this should be the port rsync daemon listens to) remoteport=873 # remotehost: cwRsync Server name/ip-adress remotehost=192.168.2.26 # your rsync module at server side rsyncmodule=backup # Function to terminate secure tunnel processes TerminateTunnel () { ps ax | grep "ssh -i $identity -L $localport" | awk '{print $1}' | xargs -i kill {} 2&>/dev/null } # Clean up ... terminate zombie tunnels TerminateTunnel echo Establishing secure channel ... ssh -i $identity -L $localport:127.0.0.1:$remoteport SvcwRsync@$remotehost -T -N -f # your rsync command, you can edit: # - rsync options (-av) # - source files (temp/) # - exchange source and destination # - and more :-) Try and tell me! rsync -av temp/ rsync://SvcwRsync@localhost:$localport/$rsyncmodule echo Terminating secure channel ... TerminateTunnel

NB! You must forward ssh port 22 to CWRSYNC_SERVER at the edge of your secure network (your router/firewall). I recommend strongly to tighten security further by using options available in rsync and openssh (host limitations, secrets file ...).