Silver Splash is a captive portal for Linux platforms. Setup is still rough - see the Google Group for discussion of setup. But there are a few notes being added here. You will need to add the apache user to /etc/sudoers and give it permission to run...PHRED/App-SilverSplash-0.02 - 11 Sep 2010 04:07:44 GMT - Search in distribution
App::SilverSplash - A network captive portal for Linux platforms.