Ruuvi Gateway sets up a WiFi hotspot and a webserver that provides the user interface for configuration over HTTP. The user interface can be accessed in any major browser. To connect to the user interface connect to the hotspot "Configure Ruuvi Gateway XXXX" (it does not require a password). Once connected, open your browser and enter http://10.10.0.1 . After the initial configuration is complete, you will be able to access the gateway from the LAN in the same way.