Chrome OS - Network Setup & Whitelisting

This article describes the appropriate hosts and ports to whitelist for any networks that have meldCX solutions running on them.

Network Address

Network address needs to be dynamically assigned.

DHCP Requirements

• Appropriate IP range configured
• Gateway IP set to Internet Router
• DNS Address set to Server to resolve host names

Whitelisting: Critical Configuration!

The following hostnames must be whitelisted to allow the device to connect to the meldCX dashboard, and to the Chrome OS servers.

Failing to have the appropriate hosts whitelisted can cause:

• Devices sitting on Chrome’s screen state ‘waiting for network connection’
• Devices failing to start kiosk application (agentM)

meldCX Hostnames

Production Environment

api.meld.cx
socket.meld.cx
apps.meld.cx 
beta-api.meldcx.com (For Opensign application users only)
reception.meld.cx (For Visitor Reception / VSI App users only)

Beta Environment

beta.meld.cx
beta.socket.meld.cx
beta-api.meldcx.com

Required OPEN ports 

• Port 80, 443 (TCP) - For Meld & Google hosts.
• Port 5228 (TCP and UDP) - Only required for Android users and on Google hosts

Google Chrome Hostnames

Chrome OS IPs & hostnames are subject to change. These hostnames must be whitelisted to ensure Chrome OS & CDM connectivity is enabled.

See Google's list of published hostnames. Please review Google's whitelisting requirements from time to time to check for any new or changing whitelisting requirements.

During our rigorous testing process, meldCX has identified these additional Google hostname(s) that are also required:

• mobile-gtalk.l.google.com

Application whitelist requirements

Please check with your App Vendors for any whitelist requirements.

This tool is available on Chrome OS devices which can help you determine if there are any blocked connections to Googles servers