[Zope] is ZEO the answer?

I would like to publish my Zope site internally (Intranet) via HTTP AND externally via HTTPS (Internet). Should I be looking at ZEO or another option? Using on HTTPS server for both would be the easiest, but the intranet use is pretty heavy and I don't want to incure the overhead of SSL on what doesn't need to be encrypted. Thanks in advance, Erik Myllymaki erik@pacific-shores.com