How can I keep rsync from using encryption and compression for the file transfers after the connection is authorized?

I understand that a secure connection (i.e. ssh) is needed to authorize a connection to the remote server. But after that is authorized can the data be transmitted without encryption and compression as well? I am transferring files in the local network and could do without the overhead of compression and encryption, or even the attempt to compress then if they are suitable. Compression may be fine if it speeds things up, but encryption is not. I know of alternatives like FTP, NFS and Samba are available, but I prefer rsync, as the channel is closed once the transfer is complete