The Yun Shield has a WiFi interface and a LAN port. Either of them has IP address, can be used for internet connection and device management. 

Factory IP of WiFi port

Yun Shield acts as an AP at the first boot

At the first boot of Yun Shield, it will auto generate an unsecure WiFi network call Dragino-xxxxxx

User can use their laptop to connect to this WiFi network. The laptop will get an IP 192.168.240.xxx and the Yun Shield has the default IP 192.168.240.1 

LAN port has Fall Back IP

PC setting to use Fall Back IP

A fall back IP 172.31.255.254/255.255.255.252 is assigned to Yun Shield's LAN port so user can always access Yun Shield with this ip if their laptop has the IP 172.31.255.253/255.255.255.252.

Setup IP address via command line:

Start CMD with Administrator right

Type:

netsh interface ip set address name="Local Area Connection" static 172.31.255.253 255.255.255.252

Ping 172.31.255.254 should give a response.

Revert to back dhcp:

netsh interface ip set address name="Local Area Connection" source=dhcp

Once IP address known(172.31.255.254), use web pannel setup WIFI.

User Name: root

Password: dragino (default)