How to properly setup 2 secure folders within my web application?

I have a web application which needs to have 2 secure folders, one is for the site admin to manage a few items within the site.
The other folder is for clients to access their information.
Based on the web.config settings, if i try to access the admin folder, im directed to the client login page, then login and have to manually go back to admin section and know the link to get to it.
Is there no way to set up 2 folders on the site to be independant of each other when it comes to the login process?
I mean if i go to the admin folder, im presented with the admin login page? And if i go to the client folder, im presented with the client login page?
Here is the web config setttings:
<authentication mode="Forms"> <forms loginUrl="/client/Default.aspx"> </forms> </authentication> <authorization> <allow users="*"/> ...