Synology, and it's not cheap -
[URL unfurl="true"]https://www.synology.com/en-global/products/Device_License_Pack[/URL]
The license is to enable adding devices (more than what it supports by default for that NAS model) to Synology's own Surveillance Station software.
I am not sure if you can use other Surveillance software; you will need to research or let others help.
