Virtual Hosting via Multiple IP Addresses

Users may sometimes have a network host that will serve WWW data for multiple virtual sites. These sites may have different hostnames (www.cmu.edu, www.mit.edu) that are short and easy to remember. Carnegie Mellon does not provide multiple IP addresses to hosts. If this functionality is needed, the host may be setup with multiple valid hostnames.

To establish a host with multiple valid hostnames, consider these tips:

• The host may have two separate hostnames, and the web server is smart enough to determine which hostname was used, or the host may have two separate hostnames which point to two separate IP addresses, which the web server uses to determine what the request was for.
• Linux users should not configure "Networking options: Network aliasing: IP: aliasing support."  Aliasing support is not permitted on the campus network.

Last Updated: 2/14/08