[Zope] SSL and Apache

Hi, I am writing a thesis about the security of Zope and have these questions. I am wondering if this is the right place to ask. Is Zope behind Apache the only solution to provide SSL connection to Zope? If not what are the other options? Have there been any work on making Zope being able to handle SSL itself? If not, why it is hard to? Kindest regards ~Meitham