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. Microsoft Internet Information Services (IIS) 6.0
IIS runs as an enterprise service in Windows Server 2003. Windows Server 2003 allows you to host multiple
Web sites on a single server because Windows Server 2003 and IIS 6.0 have the ability to distinguish
between multiple sites. This is accomplished by using the Web site's identification. Each Web site has a
unique, three-part identity: a port number, an IP address, and a host header name. Thus, by specifying
different port numbers, IP addresses, or host header names for each website, multiple websites can be
supported. Each Web site can share two out of three unique characteristics and still be identified as a unique
site.
For security reasons, IIS 6.0 is not installed on Windows Server 2003 by default with the exception of the
Windows Server 2003, Web Server Edition. Furthermore, a default installation of IIS 6.0 will only serve
static content and will not process any scripts or code embedded in the Web pages. Thus, components that
support Active Server Pages, Server Side Includes, and FrontPage server extensions, are not installed by
default.
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