I have three devices - two laptops and one Raspberry Pi - with Syncthing installed. The Raspberry Pi is connected to the internet and I use it mostly to make sure both laptops are up-to-date when both are not turned on.
A strange thing has been happening for the last few months where syncthing is able to sync even if one of the laptops is not on the same network. I’ve even been in a different city and as soon as I get onto a network (internet or tethering from my phone) it starts syncing.
How is this happening?!
I don’t have port forwarding enabled on my router and I’ve checked that no other devices are accessing my internet connection. Are there any settings in Syncthing that I should check/disable? I’m mostly worried that there’s a security vulnerability.