hi Again
thanks for your note - but the problem was much simpler - when I prepared this test-setup we just created a vm for the webserver with default settings etc and a default website - I verified that I could reach it etc - and afterwards I disabebled the default "anonymous access" and added kerberos as protocol.
Funny enough this caused the website to stop listening on port 80 (which I wans't aware of) and since I for this testsetup just had added a "ping" monitor for the monitor on the webserver instead of a http-monitor it didn't fail. So - a funny coincidence which caused a lot of confusion
best regards /ti