Thx for your help guys, very much appreciated.
Minutes after sending my post I found a relatively deep explanation under httpd.apache.org/docs/1.3/howto/auth.html
However, I did not really succeed, yet.
I think I successfully created a user file with htdigest.
Access is also blocked from outside,whereas intranet works fine.
But if I try to add lines allowing a password-protected request from external IPs, something goes wrong.
This is my syntax for the <directory>-options, which doeas not work (the apache server refuses to start at all):
Require user root
Deny from all
Allow from 192.168
What's wrong with this?
@coopster: I will think about the VPN-tunnel-idea but for the time being I'd just like to refine my understanding of the way apache works.