In case of 3-tier connection mode, only 8080 port of BO server needs to be accessible from your machine. In this case a connection file is needed on your machine. To create connection file automatically, follow given steps:
1. Open BI Launchpad in any browser
2. Go to Preferences
3. Go to Web Intelligence Preferences
4. In modification interface for for Webi document - select "Desktop (installation required)"
5. Save Preferences
6. Now try to create a new Webi document from BI Launchpad, it will automatically open rich client from your machine with automatic login.
7. Close Rich client and Open again
8. You will find an option in SYSTEM box with J2EE or 6400 keyword
9. You can now login to BO using rich client
10. Once you are able to access rich client successfully, just change the BI Launchpad preference back to "Rich Internet Application (download required)"
After doing the changes mentioned above, check if you are able to connect Rich client through launchpad/server.