(Note: The following was written before NoCatAuth existed)BR Captive portals allow you to leverage a common browser as a secure authentication device. They also have the potential to allow you to do everything securely via SSL and IPSec and setup per user quality of service rules, and still maintain an open network. If you are curious about why you might want to install a captive portal please see WhyCaptivePortal. You can also see the beginning of our software requirements process at CaptivePortalDefinition.

Captive portals are becoming a popular way for SMS/BSN vendors to provide user authentication and IP flow management (basically traffic shaping and bandwidth control) without a required client application. They work by forcing un-authenticated users to a web page, once you have "captured them" this way by allowing the web page to interact with the router/firewall you can completely control their access.

As far as I am aware no OpenSource software has ever been developed to do this and plan to write this software as part of ThePlan.



Usage Flow: