03/03/10

Name-based virtual hosts
  - Several hostnames share the same IP address

  NameVirtualHost 143.239.75.211

  <VirtualHost 143.239.75.211>
    ServerName www.cs.ucc.ie
    ServerAlias we_are_great.ucc.ie
    DocumentRoot /...../cs/
    ...
  </VirtualHost>

  <VirtualHost 143.239.75.211>
    ServerName www.bis.ucc.ie
    ServerAlias we_are_shite.ucc.ie
    DocumentRoot /..../bis/
    ...
  </VirtualHost>

  Suppose a client request arrives on 143.239.75.211
  Every HTTP/1.1 request has a Host: header
  Whichever ServerName matches the Host: header is
  the Web site that Apache will use
  If no match or no Host:, the default is the first

  When IP-based, when name-based?