Welcome, Sphirewall is a authenticating, captive portal firewall platform for GNU/Linux. With Sphirewall you can utilise all the features of a normal firewall with the added ability to manage access based on users and user groups, this is one of the features that seperates Sphirewall from other opensource products available.
Sphirewall also completely replaces iptables in the kernel with its own
module and adds features that iptables does not offer.