To assign a Web site to a security zone
In Internet Explorer, on the Tools menu, click Internet Options.
Click the Security tab, and then click a security zone: Local intranet zone, Trusted sites zone, or Restricted sites zone.
If you clicked Local intranet, click Advanced.
In the Add this Web site to the zone text box, type the Internet address for the Web site that you want to add to this zone, and then click Add.
You cannot add Web sites to the Internet zone, which includes everything that does not belong to any other zone and is not on your local computer.
To remove a Web site from a zone, complete steps 1 through 4. In the Web sites list box, click the name of the Web site you want to remove, and then click Remove.
If you want Internet Explorer to verify that the server for each Web site in this zone is secure before connecting to any Web sites in this zone, select the Require server verification (https:) for all sites in this zone check box.