WebRTC IP Leak Test - Is your IP address leaking?

While software like NoScript prevents this, it's probably a good idea to block this protocol directly as well, just to be safe.

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How to disable WebRTC in Firefox?

In short: Set "media.peerconnection.enabled" to "false" in "about:config".

Explained:

1. Enter "about:config" in the firefox address bar and press enter.
2. Press the button "I'll be careful, I promise!"
3. Search for "media.peerconnection.enabled"
4. Double click the entry, the column "Value" should now be "false"
5. Done. Do the WebRTC leak test again.

If you want to make sure every single WebRTC-related setting is really disabled change these settings:

1. media.peerconnection.turn.disable = true
2. media.peerconnection.use_document_iceservers = false
3. media.peerconnection.video.enabled = false
4. media.peerconnection.identity.timeout = 1

Now you can be 100% sure WebRTC is disabled.

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How to fix the WebRTC Leak in Google Chrome?

WebRTC cannot be fully disabled in Chrome; however, it is possible to change its routing settings (and prevent leaks) using an extension. Two open-source solutions include WebRTC Leak Prevent (options may need to be changed depending on the scenario), and uBlock Origin (select "Prevent WebRTC from leaking local IP addresses" in Settings).

What about other browsers?

Chrome on iOS, Internet Explorer and Safari does not implement WebRTC yet. But we recommend using Firefox on all devices.