How to set BI permission via Login/pass and have web remember?

[shaselai]

I have a frontend page where it has links to a number of BI reports. I have a login/pass page where the user provides the TM1 username/pass. From that I can determine what pages the user can have access to. The issue is when the user clicks on the BI links it leads the user to the COGNOS login/pass screen. is there a way to use cookies via login/pass (not cert) so that once the user logs into the website BI links no longer asks for credentials? I know there's a way for certs to do it but we are not going that route due to limitations.

Thanks!