Issue on talk throught firewall office

[devnull]

Perhaps you need a STUN server in the internet for restricted internet access from offices.

For tests perhaps you can use the google stun-server used in Jitsi:

stun:stun.l.google.com:19302
stun:stun1.l.google.com:19302

Read:

Requirements for Nextcloud Talk

I’ve just installed NC 13.0.1 on CentOS 7.4 (well, nethserver indeed) I know almost nothing about webrtc, but I was reading a bit about STUN/TURN, etc. So, my question is: Should I install: STUN server? Turn server? Ice server? If so, what software would you recommend me? And what ports should be open/accessible? I look forward to read your kind help and advice, Thank in advance

HowTo: Setup Nextcloud Talk with TURN server

Background The configuration of Nextcloud Talk mainly depends on your desired usage: As long as it shall be used only within one local network, nothing should be needed at all. Just verify that all browsers support the underlying WebRTC protocol (all famous ones do on current versions) and you should be good to go. Talk tries to establish a direct peer-to-peer (P2P) connection, thus on connections throughout the local network (behind a NAT/router), clients do not only need to know each other…