• IPs are in short supply. How do you host 50 distinct machines on one IP?
• using name-based virtual hosting
• each request contains the hostname it's trying to connect to
• 65.41.114.178 - - [23/Jan/2011:14:17:14 -0600] "GET /week1/ HTTP/1.1" 200 530 "http://ccis2122.linux-classes.com/" "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; InfoPath.2; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729; .NET4.0C; .NET4.0E; InfoPath.3)"
• so...give one IP addresses many CNAMEs or A records
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