What is a WebRTC Leak?

WebRTC (Web Real-Time Communication) is a browser technology that enables peer-to-peer connections for video, audio, and data sharing. Unfortunately, it can bypass proxy settings and expose your real IP address.

How WebRTC Leaks Happen

Browser requests STUN server for ICE candidates

STUN server returns your public IP

This IP is visible to websites via JavaScript

Detection Methods

Browser Console Test

// Check for WebRTC leaks

const pc = new RTCPeerConnection({

iceServers: [{ urls: 'stun:stun.l.google.com:19302' }]

});

pc.createDataChannel('');

pc.createOffer().then(o => pc.setLocalDescription(o));

pc.onicecandidate = e => {

if (e.candidate) console.log(e.candidate.candidate);

};

Using Our IP Score Tool

Our IP Anonymity Score tool automatically checks for WebRTC leaks and displays any detected local or public IPs.

Prevention Strategies

Browser Extensions

uBlock Origin (WebRTC leak prevention setting)

WebRTC Leak Shield

Privacy Badger

Browser Settings

**Firefox**: Set `media.peerconnection.enabled` to `false` in about:config

**Chrome**: Use browser extension or run with `--disable-webrtc` flag

Conclusion

Always test for WebRTC leaks when using proxies for privacy. Our tools can help you verify your anonymity level.

Detecting and Preventing WebRTC Leaks