Loop on authentification page.
I have a problem with my captive portal in pfSens 2.0.3.
I have a customized login page, authentication via the pfSense users and redirect to http://www.google.com.
Everything that simple.
Many devices connect without problem, against some have a strange problem:
After being authenticated on the interface they are redirected to the authentication page again instead of Google.
No problem with the names of users and passwords, and no error message.
They are simply loop on the authentication page.
The affected devices are Winodws PC or APPLE.
Check the system, dhcp, and portal auth logs to see if there are any messages/errors at the time of the redirect.
Sometimes that can happen if you have the portal's hard timeout set longer than the DHCP lease time and it can't properly re-use the sessions.