9007 HTTP

9008 HTTPS

Video Station

1900 (UDP), 5000 (HTTP), 5001 (HTTPS), 9025-9040, 5002, 5004, 65001 (for using the HDHomeRun network tuner)

TCP/UDP https://mariushosting.com/what-network-ports-are-used-by-synology-services/

https://kb.synology.com/en-eu/DSM/help/VideoStation/VideoStation_desc?version=7

https://kb.synology.com/en-me/DSM/tutorial/What_network_ports_are_used_by_Synology_services