Traffpro is a Linux-based traffic control, traffic accounting, bandwidth shaping, bandwidth management, and network security system with many features for reporting and billing. Internet access can be distributed to a LAN and users can be assigned a traffic quota. Networks are protected from external intrusions with a firewall. You can control ports, blacklist URLs, add iptables rules, configure multiple ISPs and multiple subnets, detect viruses, view URL histories (without Squid), see the traffic consumed by individual users, and more. It also has a ticket support system and a captive portal module.
lsfw (list firewall) helps network administrators deal with firewalling on a huge network. It lists the firewalls rules applied between two points on the network. It uses the configuration of the network equipment and builds a (light) model of the network described by the equipment. This allows probing for access-list matching all over the network, doing routing and firewalling.