Since I have noticed a few people with questions regarding this issue in other threads, I thought I would go ahead and post a little information on it.
Hiding your internal IP address can be obtained in various ways, here are some examples:
- Privoxy (http://www.privoxy.org/)
- Webwasher Classic (http://www.cyberguard.com/products/webwasher/webwasher_products/classic/index.html?lang=de_EN)
There are also free proxy services that actually intercept what your browser is sending out and hide your external IP address. One is Tor (http://tor.eff.org/) which can actually be installed as a “Tor & Privoxy & Vidalia bundle” which will take care of your web filtering through Privoxy and your anonymity through Tor while providing a nice interface through Vidalia.
I guess I mise well go ahead and mention iPig (http://www.iopus.com/ipig/) which can encrypt all of the information sent out of your computer, send it to a remote internet gateway, de-crypt it and send it on it’s merry way. This can be usefull for people with wireless internet who aren’t sure of the encryption strength their routers provide.
Keep in mind that even if you use a content filter such as Privoxy or Webwasher and a proxy service such as Tor, it is still possible to reveal your IP address to websites that use Java. A way to prevent this is to use your firewall to restrict access from your web-browser to the port your filtering program uses only. An example would be limiting firefox.exe to port 9050 only, this example would work with the default setup of “Tor & Privoxy & Vidalia bundle” which can be downloaded on the Tor page linked above.
There are many other products and services than mentioned above, I just wanted to post some options for people who are interested to consider. Feel free to post other methods ;D
More information can be found all over the web, a source I personally recommend is Wilders Security Forums (http://www.wilderssecurity.com/forumdisplay.php?f=40)