How can https://www.whatismyip.com/ see my LAN IP address? [closed]

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Closed 10 months ago.

The website is showing my correct internal LAN IP address.

https://www.whatismyip.com/

It does not work in Safari.

I do not suspect this is an XKCD #628 attack. How is this website implementing this?

回答1:

This is because of WebRTC feature.WebRTC feature will leak your IP address even if you are behind a proxy server or using a VPN service.

来源：https://stackoverflow.com/questions/53563293/how-can-https-www-whatismyip-com-see-my-lan-ip-address