QNAP NAS as FTP Server
Log into your QNAP´s webUI, open the settings tab Network Services / FTP. Activate the FTP service and leave all parameters at their defaults.
Open the FTP settings of camera and type in your QNAP´s IP address, an upload directory and your QNAP login - submit and test.
Activate your camera´s FTP upload and check the upload directory.