A WebRTC leak occurs when your browser does not use your private network (VPN, Proxy, Tor…) for WebRTC connections, allowing sites you visit to deanonymise you. This page checks which IP address is used for WebRTC. Ideally, only the IP address from your private connection should appear, ensuring your identity remains hidden.

To disable WebRTC on Firefox and derivatives, set media.peerconnection.enabled to false in about:config.