How do I show 403 error

[blason]

Thanks Max.

I am just trying that on my test server. Also this proxy I am gonna use for
MS Exchange OWA and thus would not want to publish /ActiveSync and
/offlineaddressbok urls through my reverse proxy. 

How can I block certain urls or path in nginx so that those URLs would not
be accessible or proxied from internet?

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,257041,257066#msg-257066