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WebRTC can leak your private IP address, even though you are using a VPN, from what I learn here.

Am I protected against this information leak affecting my privacy, when I'm using the incognito or private browsing mode in my browser along with a VPN connection? In other words, is my private IP address hidden from the websites I visit?

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Graviton
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1 Answers1

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Unfortunately both internal and external IP addresses are still exposed even when you're browsing in incognito/private mode. In your case not only your internal network IP-address and the internal VPN IP-address will be exposed but also the external ISP IP address.

You can test it for example here:

https://ipleak.net/ (seems offline) https://www.browserleaks.com/webrtc

Chrome and Firefox leak this information even in incognito/private mode. Although there is a fix:

For Firefox

https://addons.mozilla.org/En-us/firefox/addon/happy-bonobo-disable-webrtc/

For Google Chrome

https://chrome.google.com/webstore/detail/webrtc-leak-prevent/eiadekoaikejlgdbkbdfeijglgfdalml?hl=en

Bob Ortiz
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    Sadly, WebRTC does not expose only the local and VPN public IP addresses, but also the user's ISP provided public address *behind* the VPN (the very address you try to hide using the VPN). See for instance [this page](https://www.perfect-privacy.com/webrtc-leaktest/) (or search words like "webrtc stun vpn" in your favorite search engine for more references). – WhiteWinterWolf Jun 21 '16 at 08:49
  • @WhiteWinterWolf good call, I changed the answer. – Bob Ortiz Jun 21 '16 at 08:53