An intrusion detection system is a device or software application that monitors a network or systems for malicious activity or policy violations. Any intrusion activity or violation is typically either reported to an administrator or collected centrally using a security information and event management (SIEM) system. A SIEM system combines outputs from multiple sources and uses alarm filtering techniques to distinguish malicious activity from false alarms.
Nmap is a network scanner created by Gordon Lyon. Nmap is used to discover hosts and services on a computer network by sending packets and analyzing the responses.
Snort is a free open source network intrusion detection system (IDS) and intrusion prevention system (IPS) created in 1998 by Martin Roesch, founder and former CTO of Sourcefire. Snort is now developed by Cisco, which purchased Sourcefire in 2013.
Suricata is an open-source based intrusion detection system (IDS) and intrusion prevention system (IPS). It was developed by the Open Information Security Foundation (OISF). A beta version was released in December 2009, with the first standard release following in July 2010.
Sguil is a collection of free software components for Network Security Monitoring (NSM) and event driven analysis of IDS alerts. The sguil client is written in Tcl/Tk and can be run on any operating system that supports these. Sguil integrates alert data from Snort, session data from SANCP, and full content data from a second instance of Snort running in packet logger mode.
Zeek is a free and open-source software network analysis framework. Vern Paxson began development work on Zeek in 1995 at Lawrence Berkeley National Lab. Zeek is a network security monitor (NSM) but can also be used as a network intrusion detection system (NIDS). The Zeek project releases the software under the BSD license.
OSSIM (Open Source Security Information Management) is an open source security information and event management system, integrating a selection of tools designed to aid network administrators in computer security, intrusion detection and prevention.
OSSEC (Open Source HIDS SECurity) is a free, open-source host-based intrusion detection system (HIDS). It performs log analysis, integrity checking, Windows registry monitoring, rootkit detection, time-based alerting, and active response. It provides intrusion detection for most operating systems, including Linux, OpenBSD, FreeBSD, OS X, Solaris and Windows. OSSEC has a centralized, cross-platform architecture allowing multiple systems to be easily monitored and managed. OSSEC has a log analysis engine that is able to correlate and analyze logs from multiple devices and formats.
Prelude SIEM is a Security information and event management (SIEM).
Sourcefire, Inc was a technology company that developed network security hardware and software. The company's Firepower network security appliances were based on Snort, an open-source intrusion detection system (IDS). Sourcefire was acquired by Cisco for $2.7 billion in July 2013.
LYME and LYCE are software stacks composed entirely of free and open-source software to build high-availability heavy duty dynamic web pages. The stacks are composed of:
Cisco Security Monitoring, Analysis, and Response System (MARS) was a security monitoring tool for network devices. Together with the Cisco Security Manager (CSM) product, MARS made up the two primary components of the Cisco Security Management Suite.
Security information and event management (SIEM) is a field within the field of computer security, where software products and services combine security information management (SIM) and security event management (SEM). SIEM is the core component of any typical Security Operations Center (SOC), which is the centralized response team addressing security issues within an organization.
Aanval is a commercial SIEM product designed specifically for use with Snort, Suricata, and Syslog data. Aanval has been in active development since 2003 and remains one of the longest running Snort capable SIEM products in the industry. Aanval is Dutch for "attack".
ACARM-ng is an open source IDS/IPS system. ACARM-ng is an alert correlation software which can significantly facilitate analyses of traffic in computer networks. It is responsible for collection and correlation of alerts sent by network and host sensors, also referred to as NIDS and HIDS respectively. Correlation process aims to reduce the total number of messages that need to be viewed by a system administrator to as few as possible by merging similar events into groups representing logical pieces of malicious activity.
Used as part of computer security, IDMEF is a data format used to exchange information between software enabling intrusion detection, intrusion prevention, security information collection and management systems that may need to interact with them. IDMEF messages are designed to be processed automatically. The details of the format are described in the RFC 4765. This RFC presents an implementation of the XML data model and the associated DTD. The requirements for this format are described in RFC 4766, and the recommended transport protocol (IDXP) is documented in RFC 4767
The Co-Managed IT security service model entails security monitoring, event correlation, incident response, system tuning, and compliance support across an organization's entire IT environment. Co-Management allows organizations to collaborate with their managed security service providers by blending security expertise of the provider with the contextual knowledge of the customer to optimise security posture.
Comparison of host-based intrusion detection system components and systems.
IPFire is a hardened open source Linux distribution that primarily performs as a router and a firewall; a standalone firewall system with a web-based management console for configuration.
Security Onion is a free and open Linux distribution for threat hunting, enterprise security monitoring, and log management. Its first release was in 2009.
