Issue in displaying Cognos report in .Net application

[prince.thomas]

We have a cognos report with Advanced filters in it. I am displaying that cognos report in .Net application by accessing the URL and setting tha URL in an Iframe. It displays the report without any issue. But when I click any filter or Links in cognos report, Some internal error happens and redirect the cognos page to the root folder.
( In order to avoid cross site scripting issue we are using the /ReportFrame/XSSFrame.aspx? to display the report)