Quick Answers

What Is a WebRTC Leak?

A WebRTC leak is when your browser's video-call technology reveals your real IP address to a website, even though your other traffic goes through a proxy.

By Team of Monkeys Editorial Updated 1 min read Affiliate disclosure

This guide contains affiliate links to Geonode, Webshare and Rayobyte. If you buy through them we may earn a commission, at no extra cost to you.

What Is a WebRTC Leak illustration: a WebRTC leak is when your browser's video-call technology reveals your real IP address to a website, even though your other traffic goes through a proxy 3jdej38j4

The short answer

WebRTC lets browsers make video calls directly to each other. To do that, it discovers your addresses using STUN servers, often over UDP, which many proxy setups do not route. A website's script can ask WebRTC for those addresses and see your real IP.

How to stop it

  • Use a browser or extension setting that limits WebRTC to the proxied connection.
  • Use an antidetect browser that handles WebRTC for each profile.
  • Test on a leak-check page before you rely on the setup.
Your browser leaves fingerprints, even behind a proxy (animated GIF) 3jdej38j4
Your browser leaves fingerprints, even behind a proxy. GIF via Tenor

Also known as

WebRTC IP leak, STUN leak.

Learn more

Affiliate disclosure: Team of Monkeys is an affiliate of Geonode, Webshare and Rayobyte. Links and banners marked as sponsored, and links to Geonode, Webshare and Rayobyte in the text, use our referral links, and we may earn a commission if you buy through them, at no extra cost to you. Our explanations and comparisons are written to be useful whichever provider you choose.

Editorial note: Proxy providers change their pools, features and prices often, so treat any figures here as typical ranges at the time of writing and confirm current terms with the provider before you buy.
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