SYNCING.NET connects to our authentication service via TCP-port 443 (https). To receive data from other computers over a LAN connection, TCP-port 55556 will be used by default.
SYNCING.NET typically tries to connect the computers locally, if they are connected to the same LAN. If this is not possible, data will be cryptographically secured relayed via our authentication service.
SYNCING.NET can change the local TCP-port automatically to the next free port, if the default TCP-port is already in use by another application.