Re: Detecting Internal IP Addresses

From: x y (jamescagney90210@excite.com)
Date: 05/24/02 

From: "x y" <jamescagney90210@excite.com>
Date: Fri, 24 May 2002 09:20:04 -0400

"Troy Jerkins" <tjerkins@alltel.net> wrote in message
news:udFn#ByACHA.864@tkmsftngp04...
> Recently I was introduced to securitymetrics free port scan offered via
> their web site
> http://www.securitymetrics.com/portscan.adp which I ran on my home network
> from my Win2K Pro machine behind my firewall (Tiny Personal Firewall 2.0).
> Surprisingly, the scan detected my actual internal (Private) address in
> addition to public address I'm using for NAT. I tested this behind a
Netgear
> router as well with the same results.
>
> How does this happen and does anyone know how to prevent this information
> from being collected by others?

They were able to get my real IP address too. My guess is that perhaps your
web browser gave up that information. Being scanned by a web app that you
initiated is not the same as being scanned by a hacker, so that does not
necessarily mean you are vulnerable to a hacker scan. On the other hand, if
you were tricked into sending your web browser to a hostile site, there are
a number of things that they could try to do on your machine, depending on
your browser and installed patches.

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