Redirect to URL after Login

Hi everybody,

here is what I want to do:

• Step 1: User opens Fiori Launchpad and is not logged in => login handler redirects to portal logon page (this works already)
• Step 2: After the login to the portal the user gets redirected back to the fiori launchpad (and now has a sso ticket)

How can I supply the URL of the Fiori Launchpad to the Portal Login Page such that after the login the redirect happens?

Is there some kind of parameter like "return url" or something?

Disclaimer: i have no experience with the portal at all. So if you need any info point me to the correct menu in the SAP NetWeaver Administrator and I will check.

Thanks!