Sourcefire IPS provides vulnerability-based intrusion prevention built on the foundation of Snort, the world's most popular intrusion prevention software. Sourcefire IPS uses a rules-based language—a powerful combination of signature, protocol, and anomaly-based inspection methods—to examine packets for attacks. Attacks protected against include worms, Trojans, port scans, buffer overflow attacks, spyware, Voice Over IP (VoIP) attacks, IPv6 attacks, protocol anomalies, malformed traffic, invalid headers, denial of service attacks, and zero-day attacks. The Snort rules language is the industry standard, used by a community of hundreds of thousands of security practitioners. Unlike competing systems, Sourcefire IPS allows users to create, edit, and view detection rules, and full packet payloads are logged for every event so users can see exactly what threatening traffic has been detected. Sourcefire IPS can block threats directly and stop attackers by integrating with access control devices such as firewalls, routers, and switches. With inline or passive deployment options, line speeds from five megabits per second (Mbps) to eight gigabits per second (Gbps) and fully redundant configurations, Sourcefire IPS appliances are architected to meet your network's needs.