Cognos Gateway Server (IIS) serving hyperlinks instead of passing through

[Aziz]

At the moment we are facing a problem with an Cognos setting in which we use a Gateway server in the DMZ. The Gateway server is linked to a Cognos application (cm) server on the local network. We use IIS. This setting is functioning as expected for Cognos reports. The end user has acces to the Cognos reports over the internet.

The problem is that we use hyperlinks in the Cognos reports pointing to files which are stored on the fileserver in combination with a virtual directory in IIS. The virtual directory exists only on the Cognos application server in the internal network. Not on the gateway, because of security.

When a user click on such a hyperlink he/she receive a page not found error.  The gateway server is trying to serve the request from the gateway server and not from the application server. An example of the steps.

1. end user logs on through internet through www.domain.com (pointing to gateway server)
2. the gateway serves the Cognos report needed.
3. the end user clicks on a hyperlink in the cognos report, e.g. www.domain.com/downloads/file1.csv
4. the user receive 'page not found' as reponse

I have attached an image as illustration.

Anyone familiar with this situation?