Security in Web reports

[JavidRaj]

Hi

I'm in a development of a web application. In this application once you enter the user name and password you can view all other details related to this one including the reports. Even if you not logged in this application, by giving the proper url and query in the location bar you can access the reports. I want to protect this . If the user gives the url and query without login to this application he can't able to view the reports.
Is there any mechanism available to do this

thanks in advance

Javid