[Zope] Authentication headers & firewall port redirection

[Roland C. Reumerman]

As stated in an email some time before I ran into some problems concerning 
accessing my password protected Zope site.

The situation:
* Zope 2.2.2 runs on a web server called www.datadistilleries.com on port 
8080
* the web site it offers is protected with Zope's own authentication 
mechanism
* the firewall redirects any HTTP requests for  
www.datadistilleries.com/ddsn (i.e., port 80) to 
www.datadistilleries.com:8080/ddsn.

However, one has to click 3 times on that Login link before the login dialog 
appears. Then it seems to build up a connection, but doesn't. I click on the 
login link again, and I'm in and everything works as expected.

Now it seems that somehow the combination of Zope-generated authenticated 
headers and the firewall redirection rule do not match: does the header 
include URL information? That would imply it tries to access 
www.datadistilleries.com:8080/ddsn (Zope generated port) instead of plainly 
www.datadistilleries.com:80/ddsn (firewall listen port).

BTW, it cannot run on port 80 because the default web server is already 
listening to that port.

Question: is it possible to somehow make Zope send HTTP authentication 
headers that have port 80 included instead of port 8080?

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