TCP and\or UDP (WebRTC) check fails
If the TCP and\or UDP check fails, it indicates that your TCP\IP traffic is blocked.
In this ase, you need to perform tha following:
- Turn off your firewall while taking your exam.
- Turn off network shield of your antivirus until your exam is over.
- Contact your network provider and ask to open data transmission through the following ports:
- TCP: 443 (HTTPS), 3478 (STUN/TURN)
- UDP: 3478 (STUN/TURN), 49152 - 65535 (WebRTC media)
If you have no such an ability to manage TCP\IP rules or if the problem persists, tey swithing to another network where these ports might be open.