Internet zone You will not be able to add or remove sites in the "Internet" zone.
The Internet zone includes all sites on the internet that are not in the Trusted sites or Restricted sites zones. Local intranet zone
The Local intranet zone includes all sites inside an organization's firewall (for computers connected to a local network). By default, the Local Intranet zone contains all network connections that were established by using a Universal Naming Convention (UNC) path, and Web sites that bypass the proxy server or have names that do not include periods (for example, http://local
), as long as they are not assigned to either the Restricted Sites or Trusted Sites zone. The default security level for the Local Intranet zone is set to Medium-low. Be aware that when you access a local area network (LAN) or an intranet share, or an intranet Web site by using an Internet Protocol (IP) address or by using a fully qualified domain name (FQDN), the share or Web site is identified as being in the Internet zone instead of in the Local intranet zone. For more information about this issue, click the following article number to view the article in the Microsoft Knowledge Base:
303650 Intranet site is identified as an Internet site when you use an FQDN or an IP address Trusted sites zone
The Trusted sites zone can include all Internet sites that you know are trusted. For example, the Trusted sites zone might contain websites that are on your organization's intranet or that come from established companies in whom you have confidence. When you add a website to the Trusted Sites zone, you believe that files you download or that you run from the website will not damage your computer or data. By default, there are no websites that are assigned to the Trusted Sites zone, and the security level is set to Medium. Restricted sites zone
The Restricted sites zone can include all sites that you do not trust. When you add a website to the Restricted Sites zone, you believe that files that you download or run from the website may damage your computer or your data. By default, there are no websites that are assigned to the Restricted Sites zone, and the security level is set to High.