These are the ports that would need to be open to communicate with Quickchannel. 
Each port is associated with a specific service or application as specified below.

Required for uploading files via FTP
21 - TCP FTP / FTPS
40010–40210 - TCP FTP

Required to access content
53 - UDP DNS
80 - TCP HTTP
443 - TCP HTTPS

Required for live streaming
1935 - TCP RTMP
443 - TCP RTMPS

Sharing webcam/screen in live events, Live Studio events and low latency producer player*
3478 - UDP WebRTC/STUN
3479 - UDP WebRTC/STUN

* Depending on the network configuration and ICE negotiation, WebRTC may use additional dynamically allocated UDP ports. If UDP connectivity cannot be established, WebRTC can fall back to TCP 443 via a TURN proxy, although quality may be affected.