I've installed Sony cameras behind the router, and the NVR couldn’t detect any motion detection from the cameras. Why?
Applied Models:
NVR-101
NVR-1012
NVR-104P
NVR-104V
VioStor-101A
VioStor-101P
VioStor-101V
VioStor-2008
VioStor-2012
VioStor-201A
VioStor-201P
VioStor-201V
VioStor-5012
VioStor-5020
VioStor-8040
VioStor-8040U-RP
Answer:
Sony cameras deliver alarm by FTP port, but they do not support FTP port mapping. Therefore, your NVR cannot detect any alarm from the cameras if they are installed behind the router.