For security reasons, you may want to limit the domains and protocols that your organization can access.
When using Cacoo, you should allow these domains to communicate using the HTTPS protocol.
Also, you should allow these HTTP request methods:
Cacoo's live collaboration and notification features communicate using the WebSocket protocol. Thus, you should allow the WebSocket protocol communication for these domains.
Cacoo's diagram video chat uses P2P communication via WebRTC. If your network does not allow this communication, you may not be able to use the video chat feature.