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Configure Apache to support multiple SSL sites on a single IP address

Oct 20, 2009, 09:32 (0 Talkback[s])
(Other stories by Vincent Danen)

"As the Apache Web server grows and matures, new features are added and old bugs are fixed. Perhaps one of the most important new features added to recent Apache versions (2.2.12, to be specific) is the long-awaited support for multiple SSL sites on a single IP address.

"Traditionally, it was only possible to have an SSL-enabled Web site if it was bound to one particular IP address. This has caused a lot of grief and frustration because if you had only two IP addresses, you could only have two SSL-enabled sites.

"On two IP addresses you can have any number of regular HTTP sites strung out across them both or bound to a single IP, but for each of these, only one HTTPS site. What made this even more frustrating is that if www.example1.com and www.example2.com were on the same IP and example1.com had an HTTPS site as well, going to https://www.example2.com/ would, in fact, take you to the equivalent of visiting https://www.example1.com/. This meant that most people who wanted HTTPS sites had to restrict one site (both HTTP and HTTPS variants) to a single IP address to avoid this type of confusion."

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