Wireless captive portal

[Jeff Holden <JHolden () MTSAC EDU>]

What free or cheap captive portal software are you guys using for
authenticating students on your wireless networks?  We are currently are
using a moded version of wifidog that auths to our AD server.  It works
fairly well until over 100 users hit it.  We now have over 400 users
hitting it at any given time and it crawls.  WIFI dog looks like a dead
project so I need to move on.  We don't need the fine grain statics wifidog
offers, just something nice and simple to give a splash page, and ties into
AD for authentication.

Jeff Holden, CISSP, RHCE
Manager, Network & Data Security
Mt. San Antonio College