How to Whitelist Zuddl Domains and Ports

Zuddl uses WebRTC technology for its real-time engagement functions and requires network configuration for environments with restricted access. If you are behind a firewall or a VPN and are trying to attend an event, run a session in Studio, or upload files such as presentations and images, you may encounter errors or connection failures.

In order to prevent such failures, Zuddl recommends whitelisting certain domains and ports, thereby providing a faster and efficient service and an overall better meeting experience. The illustration below depicts how you can whitelist Zuddl and WebRTC ports and domains to grant access to your resources through a firewall or across a VPN.

Function-wise whitelisting

Note on file uploads:

Zuddl sends uploaded files directly from the browser to cloud storage, not through *.zuddl.com. Presentations, PDFs and images go to AWS S3 (*.amazonaws.com). Videos go to our video provider, Mux, through storage.googleapis.com. Your firewall or proxy must allow HTTPS uploads to these hosts, not only downloads.

Signs that file uploads are blocked

• A presentation, PDF, image or video upload never finishes.

• Scene thumbnails in Studio stay on a loading spinner.

If the above whitelisting cannot be implemented because your organization uses a stricter firewall with many restrictions, please reach out to our customer success manager.

Note on websockets:

Websockets need to be allowed on the device browsers (like Google Chrome, Microsoft Edge, etc.) and also in the network whitelist.