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

Data integrity system that detects unauthorized changes to data on servers and routers and sends notifications. Immediate remediation of altered data is possible.

"Clue-Gathering Tools for Network and Security Managers" from which an IDS can be built. Source code freely available.

NGSEC is a security company with two main focuses: ngProducts (set of security solutions ranging firewalls, and IDS) and ngServices (penetration tests, source code auditing, software and development).

LT Auditor+ enables administrators to track network activity and alerts users about intrusions through email or paging.

The Cisco Secure Intrusion Detection System is an enterprise-scale, real-time, system designed to detect, report, and terminate unauthorized activity throughout a network.

eTrust is Computer Associates solution intended to incorporate a comprehensive network intrusion management and prevention system, real-time session monitoring, and Internet web filtering.

An adaptive Intrusion Detection System from nSecure.

The PENS Dragon Intrusion Detection System.

Unified Access Communications has developed a Linux-based intrusion detection system with an easy to use graphical interface.

CyberTrace is an active network monitoring tool that identifies suspecious network traffic. Features include the ability to flags connections by priority and review/replay traffic sessions.

Official site of the SPECTER intrusion detection system.

NIKSUN is the recognized worldwide leader in developing and deploying a complete range of network performance monitoring, security surveillance and forensic analysis tools serving a wide range of protocols and interfaces, ranging from Ethernet and Gigabit Ethernet to OC-3. Our products are the only network appliances that continuously capture and analyze LAN, MAN and WAN traffic at Gigabit rates in a single platform.

Macintosh security Auditing suite.

Offers multiplatform security secure, detect, and audit. (AS/400, Unix, Linux and Windows NT/2000)

Intrusion detection, content filtering, security scanner, Internet access control, network security, Internet monitoring.

Manufacturer of hardware IDS appliances, including Sentarus, which detects network and host based intrusion attacks, prevents future attacks, and maintains overall stability.

TriGeo Network Security, Inc., is a software development and services firm providing network security services and an overlay software solution that centralizes and enhances existing third party network security tools to protect against internal and external attacks.

Comprehensive enterprise security monitoring that will detect and respond to attacks in real-time.

Learn about Nokia's network security appliance featuring the RealSecure intrusion-detection engine.

Manufacturer of eSCAN, a tool designed to remotely evaluate a network from a remote location and regularly provide detailed security audit reports.

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

Industry-First Wireless LAN Intrusion Detection and Protection 24x7 real-time monitoring of 802.11 WLANs. Integrates multi-dimensional intrusion detection with stateful monitoring to effectively secure WLANs from intruders, hackers, interference and network abuses

Develops multi-gigabit, multi-zone, auto-adapting network-defense systems that deliver threat assessment, detection and prevention.

WiMetrics' solutions provide a real-time view of all 802.11 wireless device activity on the wireless LAN. Locate rogue wireless access points without using a wireless sniffer device. Authorize 802.11 devices for trusted network access and automatically block intruders from gaining access to the wired LAN.

Information security specialists providing penetration testing, vulnerability assessment, application security audit and intrusion detection implementation services

Certified Netscreen Intrusion Detection & Prevention and Firewall Reseller.

Offers the checkmate intrusion detection software and network security consulting.

Provider of security scanners, and web analyzers for network maintenance, also consulting and vulnerability testing.

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

Real-time network sensor-based Intrusion Detection System (IDS). Based on snort, features include live signature updates and custom signature creation.

Manufacturer of network IPS (Intrusion Prevention Systems) hardware. ASIC-designed devices help prevent attacks such as distributed denial of service, flood, HTTP URI and SYN attacks for high-traffic networks.

Developer of TAP (Test Access Point) devices designed to give Intrusion Detection Systems the ability to view both sides of a full duplex conversation, reduce packet loss due to network hardware, and view all transmitted packets.

Manufacturer of Intrusion Detection/Prevention appliances. Features include Layer 2 network bridge operation, an integrated hardware/software solution, and automatic attack signature updating.

Provisioner of IT security products with a focus on active protection of corporate infrastructures. Products include 1U, 2U and 4U rack-mountable intrusion detection/prevention systems.

Risk mitigation for complex and interconnected business environments. Provider of managed security, risk reduction, and software solutions to prevent network intrusion.

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.

ThreatSentry compares system requests against an evolving system baseline to detect untrusted activity and prevent known, undocumented and other misuse for Microsoft IIS webservers.

QJRN/400 is a system and database audit solution intended to audit and secure IBM OS/400 servers. Functionality includes access control and detailed monitoring of system events.

Commercial time-stamping service that provides intellectual property witnessing and document authentication for any file on a system. Service intends to provide digital evidence that data has not been altered or backdated. Recognizes IETF Standard RFC-3161 (Time Stamp Authority).

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.

Distributor of Internet security systems for intrusion detection and prevention, anti-virus, SSL VPN, enterprise risk management and vulnerability assessments.

Manufacturer of In-Clusive, an intranet protection and Corporate Governance system intended to prevent data theft and to detect abnormal behavior.

Manufacturer of multi-purpose hardware security appliances that provide IDS capabilities. Features include SSL-based management console, single or multi platform deployment, pre-installed sensors and detection signatures, and aggregation of reports from multiple sensors.

Manufacturers of SecoShield, an OPSEC-certified multi-sensor IDS available as a nIDS appliance or as software only. Protection is based on signature, policy, anomaly and re-analysis.

Host and network-based IDS appliance designed to meet the security requirements of the enterprise environment. Support for Windows, Linux, Solaris, AIX, and HPUX.

The first book dealing with the Snort IDS, written by a member of snort.org., offers insight into the code base, tutorials, configuration and troubleshooting scenarios.

Provider of managed security services, including the netDefender Intrusion Detection System.

Wireless Watch is an application that constantly scans a home wireless network for activity from any unauthorized or unknown network devices.

Monitoring application designed for Microsoft Internet Information Services (IIS) which detects suspicious activity by comparing against an evolving baseline of normal activity.

Product monitors for changes to Windows files, allowing for detection of unauthorized changes, as well as optional automated backup of files as they are changed.

Network IDS/IPS appliance that intends to dynamically recognize and respond to active network attacks.

A proactive enterprise-class tool to centrally monitor, analyze and manage events being emitted by Windows NT/2K/XP/2003, UNIX systems and SNMP-enabled devices.

A multi-layered security system designed to protect mission-critical control systems. Incorporates NIDS, HIDS, perimeter security, virus protection and performance monitoring.

Manufacturer of server security products intended to safeguard HTTP transactions, identify and protect against web server vulnerabilities.

Manufacturer of the Easy Guard suite of Internet security solutions, including firewall and intrusion detection products.

Developer of wireless-centric enterprise class monitoring and analysis tools intended to improve the security and performance of their wireless LANs.

A Windows-based intrusion and anomaly detection tool that will complement signature-based applications such as virus scanners. Allows for the use of automatic rules updates, policy templates, learning modes, and more.

Manufacturer of Activeworx Security Center, a feature-rich security event management solution to handle enterprise network events. A centralized and distributed framework facilitates event management, event correlation, reporting and detailed forensic analysis.

Manufacturer of Cymtec Scout, a Snort-based intrusion detection and prevention appliance.

Manufacturer of Network Scout, a behavior-based perimeter intrusion preventation system.

Manufacturer of Data Sentinal, a snapshot-based Host Intrusion Detection System (HIDS) that compares activity against an accepted baseline database.