[Zope] Authentication after proxy

I have put the Zope server behind a reverse proxy using ssl. I think I have some of the Apache certificate problems solved. Zope asks me to authenticate once after accepting the ssl cert. But then it asks me to authenticate again and there are more certs to be accepted. I'm sure this is a common enough situation: Zope behind Apache rewrite rules on the target server that all lives behind a proxy server, all using ssl. Can someone please point me in the correct direction? Thanks, Michael Maslak, Jr.