I set up an ubuntu 9.10 - apache2 - php5 server. I was under the impression that each valid SSL certificate (no domain wild cards) required it's own unique IP address and port number combination. But the answer to a previous question I posted is at odds with this claim:

http://serverfault.com/questions/109766/ssl-site-not-using-the-correct-ip-in-apache-and-ubuntu

Using the accepted answer, I was able to get multiple domains, each with it's own valid SSL to work on the same IP address and on port 443.

I am very confused as to why the above answer works, especially after hearing from others that each SSL domain website on the same server requires its own IP+port combination.

I am suspicious that I did something wrong. Can someone clear up the confusion?

Websites currently using different SSL but on the same IP and Port are: https://www.yummyskin.com/ https://staging.bossystem.org/