Firewalls

Distributed Intrusion Detection System collects firewall log excerpts from volunteers. The logs are aggregated and analyzed. Several reports are generated showing trends in attack sources and methods used.

Features a background, basics, design, implementation issues, port and protocol issues. By Matt Curtin and Marcus Ranum. Documents are also available in Postscript and PDF.

Linux security and related software articles and tools.

Manufacturers of the FortiGate series of ASIC-accelerated firewalls including VPN, anti-virus, content filtering, intrusion detection and traffic shaping.

Integrates various security solutions to protect networks and employees from the pervasive aspects of the Internet by provides high-level firewall protection, monitoring of all Internet activity and virtually unlimited VPN capabilities.

Firewall Builder is multi-platform object oriented firewall configuration and management tool. It consists of a GUI and set of policy compilers for iptables, ipfilter, pf and Cisco PIX.

A simple tool that exports OpenBSD pflogd binary packet filter logs to human-readable XML files.

Offers am enterprise class host-based intrusion prevention system.