Disable the WebTRC

 It is straightforward to do. Follow the steps below to disable WebTRC in Firefox:

1. Type about:config in your browser address bar and press enter
2. Now, press/click the button that reads I’ll be careful, I promise!
3. Look for media.peerconnection.enable
4. You need to set the column Value as False there. Double click and it will do so.
5. Done.