Usually the captive portal has to be activated only with RADIUS/Kerberos authentication.
Thank you for your reply.
You might be right.
Here is our scenario. I have an external OpenLDAP/Radius system with our accounts. People need to be in this system for access to our wireless network.
So I plan to have the ZeroShell system sitting between the wireless network and the internet + other resources that wireless clients need.
So, I thought I needed the Shibboleth authentication mechanism but I just need Radius with the proxy stuff set up, correct?