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Access to these domains need to be open regardless of which the isolation zone (IZ0,IZ1) in which your account is built in.
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Domain | Protocol/Port | Purpose |
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*.s3.amazonaws.com | TCP: 443 | Long-term audio and image file storage | stun.l.google.com | UDP: 19302 | WebRTC STUN server | stun1.l.google.com | UDP: 19302 | WebRTC STUN server | stun2.l.google.com | UDP: 19302 | WebRTC STUN server | stun3.l.google.com | UDP: 19302 | WebRTC STUN server | stun4.l.google.com | UDP: 19302 | WebRTC STUN server | *.yealink.com | TCP: 443 | Yealink auto-provisioning | *.ckeditor.com | TCP: 443 | Visual editor/UI library | *.loggly.com | TCP: 443 | Logging | *.pendo.io | TCP: 443 | Analytics and logging | *.ingest.io | TCP: 443 | Client logging | *.gstatic.com | TCP: 443 | Font library | *.googleapis.com | TCP: 443 | Font library | *.fortawesome.com | TCP: 443 | Font library |
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