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Virtual hosts are used to run more than one web site on a single machine. Virtual hosts can be "IP-based", meaning that you have a different IP address for every web site, or "name-based", meaning that you have multiple names running on each IP address. You can also run your web pages on different ports like 8080 or 8090. The fact that they are running on the same physical server is not apparent to the end user. This workshop describes the different setups based on an OpenSuse 10.2 server.