Connection to VoiceBoxer services might be blocked by the firewall configurations within your network.

Please note that you can always check if VoiceBoxer works for you on our check page by selecting your appropriate role and by establishing a connection to our media server by clicking on “Check your audio and video settings”. (see instructions here)

Network Infrastructure

VoiceBoxer uses simple WebRTC communication for streaming video and audio.

Following here are the requirements to have VoiceBoxer WebRTC communication working behind a network firewall.

Service IP Addresses Protocol Port Description
Web Server 46.101.65.0 TCP 80 HTTP
TCP 443 HTTPS
Streaming Server

46.101.42.220
46.101.64.153
139.59.198.127
139.59.187.83

UDP 1025 – 65535 WebRTC
STUN/TURN Server
50.97.253.79 TCP 80 STUN
TCP/UDP 443 TURN
TCP/UDP 5349 TURN

Opening up for outbound UDP traffic should be sufficient if your NAT employs the UDP hole punching technique.