When you add a Web page to the Local intranet zone, you are adding the domain for that page. Therefore, all pages within ...

When you add a Web page to the Local intranet zone, you are adding the domain for that page. Therefore, all pages within that domain are also added. For example, if you add http://YourIntranetServer/SubWeb to your Local intranet zone, you are adding http://YourIntranetServer.