WebRTC Leak Test - Detect Browser-Level Public IP Exposure

Check if browser WebRTC RTCPeerConnection APIs are exposing local private and public IP addresses behind active proxy connections.

Click above to analyze WebRTC candidate streams.

The WebRTC Protocol and IP Leaks Explained

WebRTC (Web Real-Time Communication) is a browser protocol that enables voice/video calls and peer-to-peer data sharing directly within the webpage. To establish direct connections, WebRTC APIs use STUN (Session Traversal Utilities for NAT) servers to discover your local LAN and public IP addresses. Crucially, WebRTC bypasses standard proxy settings, allowing websites to read your real IP through simple JavaScript calls.

How to Fix WebRTC Leaks

Since WebRTC runs natively in modern browsers, the most secure fix is to disable WebRTC entirely. You can use browser privacy extensions (like WebRTC Control) or access advanced configuration pages (e.g. `about:config` in Firefox and setting `media.peerconnection.enabled` to `false`).

Frequently Asked Questions (FAQ)

WebRTC is an open-source framework enabling real-time voice, video, and text communication directly inside browsers without requiring external plug-ins. It is used in services like Google Meet, Discord, and Zoom Web.

Standard HTTP/HTTPS proxies only route browser fetch requests. WebRTC uses lower-level UDP sockets to discover network adapters and STUN servers directly, which bypasses proxy configurations unless a full system-wide VPN is active.

Chrome doesn't have a direct toggle in the settings UI. You must install a Chrome extension like 'WebRTC Leak Prevent' or disable it via policy templates.

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