IP Finder Website

[mikester2]

I just went to a website and it was able to tell me what my IP Address was, but not only my pulbic IP , but also my IP on the inside of my network. Does anyone know how it was able to do that ?

[ommy]

well mikester2..nice question..as far as I know, when the packet leaves your machine, your IP is added to the header, when it reaches to your proxy server which had to be an application layer proxy, it just adds its ip in the header too. That means that your internal IP stays there in the header or may be cached by the proxy server for further communication. Now if someone can strip off that request header, he/she will not only be knowing your proxy's ip but possibly yours internal IP as well.
That's my 2 cents...Anyone else would like to contribute??