Classroom Prerequisites

  • Relay Classroom is supported for the Google Chrome (version 69+) and Microsoft Edge browsers.
    Note: Support for the Internet Explorer and Mozilla FireFox browsers is not available at this time.

  • Chrome browsers must have Google Administrative Templates (ADM) installed.
  • We recommend installing Windows 10- build 1809 on your workstations. This version includes features to mass-deploy the extension by Group Policy Object (GPO) and the disable students from removing the Classroom extension. See Step 2 (Windows)- Deploy the Classroom for Windows Agent for more details.
  • Your Windows Group Policy (GPO) Server must have Windows 10 – build 1809 installed with ADMX templates.
  • Enable Screenshots in the Google Admin Console.

The following outbound ports must be open on your network:

  • TCP/UDP-443 to communicate to the cloud servers
  • TCP/UDP-3478 to share and broadcast screens
  • TCP-5349 to share and broadcast screens

The following domains/hosts should be allowed on your network:

  • 5rw61tcrl5.execute-api.us-west-2.amazonaws.com
  • realtime.ably.io
  • rest.ably.io
  • global.stun.twilio.com
  • global.turn.twilio.com
  • p7nvu5it0k.execute-api.us-west-2.amazonaws.com
  • lightspeed-realtime.ably.io
  • a-fallback-lightspeed.ably.io
  • b-fallback-lightspeed.ably.io
  • c-fallback-lightspeed.ably.io
  • devices.lsmdm.com