dont create a new connection, just edit the existing connection that is already being used bu the local server and change the details to connect to the remote server. the n upload the connection file to the host.
Once this is done, switch Dreamweaver file panel to remote view, expand the connection folder and right click on the connection file and select Set Permissions. Uncheck the write option for all three groups.
You can then change the local connection file back to connection to the local server.