WebRTC is an API that is built into Google Chrome, Mozilla Firefox, and Opera. It enables a direct link between browsers for services like VoIP.
Unfortunately, it has been revealed that it’s possible to get hold of the IP address of users running WebRTC even if they are connected to a VPN or proxy service.
In order to guarantee your anonymity when connected to OVPN, it is extremely important that you disable WebRTC. You can follow our guide on how to do that here.