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Firewalls and VPNs
Add ServiceBell domains and ports to your organization's network security to ensure you can connect with visitors.
For organizations that secure their networks with firewalls or use VPNs, you may need to add exceptions for the domains and ports ServiceBell uses to communicate over our API, and to set up peer-to-peer connections with your website's visitors. ServiceBell uses WebRTC to establish peer-to-peer connections with visitors.
Note that these configurations are just suggestions. Every organizations network and device policies will be different, and you may only need some of these configurations, or completely different ones depending on how your network or device browser security is configured.

Domains

Domain
Description
*.servicebell.com
UI dashboard & API for ServiceBell.
*.stun.twilio.com
STUN server for WebRTC connections
*.turn.twilio.com
TURN server for WebRTC connections

Ports

Port
Traffic
Description
443
External TCP
HTTPS traffic to ServiceBell
3478-3479
External TCP / UDP
WebRTC communications to STUN and TURN servers
20000-65535
Local UDP
WebRTC communications on local network
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Domains
Ports