Workaround for Single Sign On problem

Hi folks,

I'd need some help with a Single Sign On (SSO) scenario.

We run a tomcat at server A, e.g. www.mytomcat.com

and a SAP BW at server B, e.g. www.mybw.com.

I want a user logon on tomcat but provide also a login to BW (WebQuery).

The tomcat application knows the user's credentials for the BW.

What I have tried is:

A) Tomcat server login to BW and fetching the cookie.

B) Sending the cookie to the browser.

C) Redirecting the browser to the BW.

Problem:

The credential cookie is not sent back to BW, because its domain (realm) is www.mytomcat.com

The browser's security features prevent creating a cookie for locations unlike the sending domain.

I post this in the ABAP group on purpose, because I hope there might be some tricky programming which can

help me solving the problem.

Any idea how I can solve this?

Thanks for any hint.