[Zope] Authentication

[William P Hewitt]

How does one authenticate a user without going through an BASIC
Authentication challenge screen?

What I would like to do is this:

I have another server that has already authenticated the individual
making the request. If the request comes to Zope from that machine, I
have a high degree of confidence that the indvidual in question is who
they say they are.... I can pass the proper information about the user
along - if I knew what/how to pass..... Is there some easy way to
accomplish this?

What I need to know is how does Zope recognize the information being
sent it, and then assign the proper roles for said individual without
forcing another login?

I've looked at cookies, authentication headers, certs, etc - but I don't
seem to understand what Zope does with this information when it receives
it. Can anyone tell me what script Zope runs to set up the roles or how
I might set them myself?

TIA

WPH