Apache - multiple sites on one IP, domain and port with SSL

Question

Is it possible to run multiple apache sites on the same IP, domain and port (meaning the <VirtualHost> tags are exactly identical and no ServerName is given) while using SSL (not sure whether SSL makes a difference here)?

I would like to separate my web services into files in etc/apache2/sites-available to be able to activate or deactivate them on demand. Basically Apache should just take all files and string them together internally, but leave me the possibility to a2dissite certain parts.

Further clarification: By "sites", I mean files in the etc/apache2/sites-available directory. "Web services" in this context are certain application like phpMyAdmin or an Etherpad which run on the Apache and whose configuration (eg Alias or ProxyPass) I want to write into its own configuration file ("site"),

Answer 1

The short answer is no.

SSL operates at a level between TCP and HTTP. But the virtual host name is sent via HTTP. So how does SSL know which certificate to use for a virtual host?

There is a way to do it - basically start up the HTTP over TCP then switch to SSL after the virtual host name (in the Host header) is sent. However this is complex, error prone and generally considered a bad idea.

Best practice is to have one IP per SSL. One machine can have multitple IP addresses, even a single network port can have mulitple IP addresses.