Transmission Ports (do I need all?)

I wonder if someone could explain what the 51413 and 51413/udp ports in the Transmission container configuration are for and whether or not I need to add them in my docker-compose. I tried without and downloading seems to work just fine.

addressed on discord, it’s the torrent port for connectivity between clients, without it you’re just a filthy leecher that should be ashamed to exist, with it, you’re a pro contributor helping others download more debian releases quickly.