Synology NAS services occupy ports 80 and 443 by default. Learn how to free ports 80 and 443 on Synology to allow for running a reverse proxy such as Traefik.
Below I invite you to discover all the ports used by your device for the various services it provides. This list from the official Synology webpage can help you set firewall rules on your DiskStation or simply satisfy your curiosity on the topic.
The operations of DSM services require specific ports to be opened to ensure normal functionality. In this article, you can find the network ports and protocols required by DSM services for operations. Certain packages may have been discontinued in newer