https://wifi.google.com/

To connect to GoogleWiFiSecure, create a new network connections profile with the following settings:

SSID: GoogleWiFiSecure (case-sensitive)

WPA/WPA2 – Enterprise
EAP type: EAP-PEAP or EAP-TTLS
Encryption method: AES (preferred) or TKIP
Authentication Protocol: MS-CHAP-V2 or CHAP

Trusted Server Name for Authentication: onex.wifi.google.com