This information applies to Windows Internet Explorer 7 and Windows Internet Explorer 8.
Internet Explorer assigns all websites to one of four security zones: Internet, Local intranet, Trusted sites, or Restricted sites. The zone to which a website is assigned specifies the security settings that are used for that site. You can choose which websites to assign to the Intranet, Trusted, or Restricted zones. By adding a website to a specific zone, you can control the level of security used on that site. For example, if you have a list of websites that you visit and you completely trust those sites, add those sites to the Trusted zone.
For more information about security zones, see Change Internet Explorer Security Settings.
Open Internet Explorer by clicking the Start button , and then clicking Internet Explorer.
Navigate to the website that you want to add to a specific security zone.
Click the Tools button, and then click Internet Options.
Click the Security tab, and then click a security zone (Local intranet, Trusted sites, or Restricted sites).
If you clicked Local intranet in the previous step, click Advanced.
The website should be shown in the Add this website to the zone field. Click Add.
If the site is not a secure site (HTTPS), clear the Require server verification (https:) for all sites in this zone check box.
Click Close, and then click OK (or click OK twice if you clicked Local intranet in step 4).
In Websites, click the website that you want to remove.
Click Close, and then click OK (or click OK twice if you clicked Local intranet in step 3).