How does Syncthing work without need to open a port on my firewall?

[dopple]

Typically, for one torrent client to connect to another you need to either open a port on a vps or forward if you have a router in place.

Syncthing uses a similar technology (the way I understand it) and all nodes communicate with each other like torrent clients do.

So then ny questions is, if I didn’t open a port, how is my Syncthing nodes able to connect to each other? Do they run it through the port 80/443?

That would mean it communicates with a server, which means that the Syncthing dev team also maintains a remote server?

[AudriusButkevicius]

Did you check what type of connection it is?

You can read about relays in the docs page, but we also do nat punching, so the answer will depend on the above question.