WebRTC leak test

Web pages can use WebRTC to ask a STUN server for your public address. That request uses UDP, and many proxies only forward TCP, so the STUN server may see your real IP.

Current IP (HTTP)

…

Result

Checking…

STUN results

Local candidates

Browser support

How to prevent WebRTC leaks

Use a proxy mode that forwards UDP (such as TUN / virtual adapter mode) so STUN requests also go through the proxy, or limit WebRTC in your browser: on Chrome install the WebRTC Network Limiter extension; on Firefox set media.peerconnection.enabled to false in about:config.

Details in How WebRTC leaks work and how to stop them.