Implementing Virtual Hosting
Early Web servers were designed to handle the contents of a single site. The standard way of hosting several Web sites in the same machine was to install and configure different, and separate, Web server instances. As the Internet grew, so did the need for hosting multiple Web sites and a more efficient solution was developed: virtual hosting. Virtual hosting allows a single instance of Apache to serve different Web sites, identified by their domain names. IP-based virtual hosting means that each of the domains is assigned a different IP address; name-based virtual hosting means that several domains share a single IP address.
Web clients use the domain name server system (DNS) to translate hostnames into IP addresses ...
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