Your advice in the issue of June 17 regarding browser restriction to a single domain is fairly extreme. Most browsers (IE and all Mozilla flavors, at least) have a built-in feature that will accomplish this task much more easily. Just set your browser to use a nonexistent proxy server.
In IEs Internet Options dialog, go to the Connections tab and click on the LAN Settings button. In the LAN Settings dialog box, check the box titled Use a proxy server for your LAN. Next click on the Advanced… button and type in any name you wish in the HTTP: field …