Change ports to port forward?

[trymeout]

I want to change the ports in Syncthing to be able to port forward. I use a VPN and my VPN allows me to have access to certain port numbers that are provided by the VPN.

Is it possible to change the port numbers in syncthing to a port number that is provided by my VPN to be able to port forward with a VPN?

[Nummer378 (Max)]

Yes, all ports are configurable. Actions -> Settings -> Connections -> Sync Protocol Listen Addresses. See the documentation for the format and defaults:

https://docs.syncthing.net/users/config.html#listen-addresses

(This does assume that your port numbers are more or less fixed though. If they change frequently, there’s no way to update them automatically unless your script that yourself)

[trymeout]

Would default:55555 be valid for an open port? My IP address may change often but my open port number will not.

[Nummer378 (Max)]

This would be treated as listen on a hostname called “default”. If you mean “listen on all/any interfaces, port 55555”, you can use tcp://:55555

[trymeout]

Could I do both tcp and udp on port 55555 with any IP address?

[Nummer378 (Max)]

This is all explained on Syncthing Configuration — Syncthing documentation.

Syncthing only uses UDP for QUIC (which you may or may not want to use), but yes the syntax is the same.