To properly access the myViewBoard ecosystem (including companion apps) on your network, request your IT department to open the following ports:


  1. TCP Port 443 (HTTPS): outbound
  2. UDP and TCP port 3478 bidirectional to the WebRTC servers
  3. UDP Ports 50,000 – 65,535 (RTP/sRTP/RTCP) bidirectional to the WebRTC servers
    These ports are optional; if blocked, media will be proxied using TURN on port 3478.



The WebRTC protocol is actively used in screen sharing. Verify that these ports are open on your network firewall.


To check your connectivity status, visit: https://myviewboard.com/cast2/test/index.html