NSPM

NSPM is a free and open-source network security application whose mission is to help system and network administrators to establish, monitor, and manage security policies and firewall access rules. Relying on popular and widely used GNU/Linux components such as Iptables for rules establishment and PHP for front-end interface and web-based system interactions, it can be installed as a standalone application on most personal, SOHO, or company servers without exotic dependencies or intensive configuration.

Developed with security, accessibility, and standards in mind, NSPM requires nothing more than a classic web browser and basic quite good networking knowledge to be part of any information system.