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A comprehensive host based security assessment and intrusion detection tool, S2 identifies and reports exploitable system weaknesses.

IntruLock is a commercial application that attempts to consolidate all security and system monitoring tasks in one common easy to use environment. Current integration includes Snort, Cisco IOS, OpenBSD pf, FreeBSD ipfw, and Linux iptables. Also available as a freeware version, IntruLock Lite.

The maker of SecureNet Pro, a commercial Network Intrusion Detection (NIDS) product suite.

Provides intrusion detection software for both computers and servers.

ipANGEL integrates vulnerability assessment and intrusion detection/prevention technologies, creating a new type of solution that is aware of its environment, and modifies the security posture accordingly.

Vendor of "Security Detective" suite, an application that helps auditors and system administrators protect critical information assets by quickly identifying potential security exposures. Investigate Windows NT, UNIX, OS/400 and VMS security from one central PC.

Publisher of LogonPro and WebPro software packages. Provides information on the company, contact details, product descriptions and technical support.

Features a dynamic threat management system that monitors security breaches and internal misuse without relying on attack signatures.

Developer of ZZMonitor, an Intrusion Detection System designed to monitor and protect internal networks and the confidential information they contain. Features the ability to detect intrusion attempts at the network, server and workstation level.

Vendor of iSecure, an Intrusion Prevention System (IPS) offering protection against distributed denial-of-service attacks (DDoS) and infrastructure cloaking capabilities.