Enter a name for the Captive Portal Profile.
Check the Enable box to turn on your access point’s built-in captive portal functionality.
To customize the portal’s form submission and redirection URL, enter a new URL in this
field.
Open Access allows clients to freely access your router. User Authentication forces
your clients to authenticate before accessing your router. External Server uses the
captive portal with HotSpotSystem or CoovaChilli.
As described in the following knowledgebase article:
https://forum.peplink.com/t/using-hotspotsystem-wi-fi-on-pepwave-max-routers/
This authenticates your clients through a RADIUS server. After selecting this option, you
will see the following fields: