Web Site Properties - HTTP Headers Property Sheet
Use the HTTP Headers properties to set values returned to the browser in the header of the HTML page.
Enable Content Expiration
Select this check box to include expiration information. Include a date in time-sensitive material, such as special offers or event announcements. The browser compares the current date to the expiration date to determine whether to display a cached page, or request an updated page from the server.
Custom Headers
Use this property to send a custom HTTP header from the Web server to the client browser. For example, you could use a custom HTTP header to allow the client browser to cache the page but prevent proxy servers from caching the page. Custom headers are described in the metabase. To have your Web server send a header, click Add, and then type the name and value of the header in the Add Custom HTTP Header dialog box. To stop sending a header, click Remove.
Content Ratings
You can configure your Web server's content rating features to embed descriptive labels in your Web page's HTTP headers. Some Web browsers, such as Microsoft Internet Explorer, version 3.0 or later, can detect these content labels in order to help users identify potentially objectionable Web content. Click Edit Ratings to set content ratings for this Web site, directory, or file.
MIME Map
Select the File Types button to configure Multipurpose Internet Mail Extensions (MIME) mappings. These mappings set the various file types that the Web service returns to browsers. The registered file types that are installed by default on Windows NT are listed in the File Types dialog box. File type extensions and MIME mappings are listed for selected file types in the File type details box.
To configure additional MIME mappings, click the New Type button in the File Types dialog box. In the File Type dialog box type the extension that is associated with the file in the Associated Extension box. In the Content Type (MIME) box enter the MIME type followed by the filename extension in the form mime type /filename extension.
To remove MIME mappings, select the file type in the Registered file types box and click the Remove button.
To edit existing MIME mappings, select the file type in the Registered file types box, click the Edit button and modify the contents of the Associated Extension and Content Type (MIME) boxes as needed.
If you set MIME mappings in the master property sheets for your computer, the Web sites and directories on your computer use the same mappings. You can modify the MIME mappings for a Web site or directory. However, if you then reapply the master properties, the master properties completely replace the modified properties for the Web site or directory. That is, the properties are not merged.