Best Free Intrusion Detection and Prevention Systems of 2024

Blumira’s open XDR platform makes advanced detection and response easy and effective for small and medium-sized businesses, accelerating ransomware and breach prevention for hybrid environments. Time-strapped IT teams can do more with one solution that combines SIEM, endpoint visibility and automated response. The platform includes: - Managed detections for automated threat hunting to identify attacks early - Automated response to contain and block threats immediately - One year of data retention and option to extend to satisfy compliance - Advanced reporting and dashboards for forensics and easy investigation - Lightweight agent for endpoint visibility and response - 24/7 Security Operations (SecOps) support for critical priority issues

Simple packet filters will soon be a thing of history. Even the open-source community is moving toward Next-Generation Firewalls. OPNsense, a leader in intrusion detection, web filtering and anti-virus, is also a leading player. No network is too small to be targeted by an attacker. Even home networks, washing machine, and smartwatches, are at risk and require a safe environment. Firewalls are an important part of the security concept. They protect computers and networks from known and unknown threats. A firewall will offer the best protection if it is easy to use, has well-known functions, and is placed in the right place. OPNsense takes on the challenge of meeting these criteria and does so in different ways. This book is an ideal companion to help you understand, install and set up an OPNsense Firewall.

A centralized management dashboard gives you complete visibility into the organization. All solutions in the stack can be integrated with one another and report to a single database. This makes it easy to perform daily tasks like monitoring, investigation and incident response. Both active and passive vulnerability scanners are available for early detection. They also provide compliance audit reports. Manage accounts access and permission changes. Alerts are sent when suspicious activity occurs. Remotely manage your environment, and respond to attacks from your dashboard. Keep track of all changes and gain access to classified information. Advanced threat protection protects servers and endpoints.

OSSEC is completely open source and free. OSSEC's extensive configuration options allow you to customize it for your security requirements. You can add custom alert rules, and write scripts that take action when an alert occurs. Atomic OSSEC can help organizations meet compliance requirements, such as NIST or PCI DSS. It detects and alerts you to malicious behavior and unauthorized file system modifications that could lead to non-compliance. The Atomic OSSEC detection and response system is based on open source and adds thousands enhanced OSSEC Rules, real-time FIM and frequent updates, software integrations and active response. It also has a graphical interface (GUI), compliance and expert professional support. It's a flexible XDR-based security solution that also includes compliance.

AlienVault®, Unified Security Management®, (USM), is used by hundreds of MSSPs around the world to create successful managed security and compliance services. AlienVault USM provides multiple security capabilities and continuously updated threat intelligence in one platform. It allows MSSPs to centralize threat detection, incident response and compliance management across both cloud and on-premises environments. AlienVault USM was designed to meet the needs of today's dynamic MSSP market. It is highly scalable and cost-effective and easy to deploy and maintain. It allows MSSPs to quickly grow their managed security service offerings to meet customer security goals and minimize their risk and expense.

Suricata can perform real-time intrusion detection (IDS), offline pcap processing (NSM), and inline intrusion preventions (IPS) on the network. Suricata analyzes network traffic using powerful rules and signature languages. It also has Lua scripting support to detect complex threats. With standard input and output formats like YAML and JSON integrations with tools like existing SIEMs, Splunk, Logstash/Elasticsearch, Kibana, and other database become effortless. Suricata's community-driven development is fast-paced and focuses on security, usability, efficiency. The Open Information Security Foundation (OISF) owns and supports Suricata's code and project. This non-profit foundation is committed to Suricata’s continued development and success as an open-source project.

CrowdSec, a free, open-source, and collaborative IPS, analyzes behaviors, responds to attacks, and shares signals across the community. It outnumbers cybercriminals. Create your own intrusion detection system. To identify cyber threats, you can use behavior scenarios. You can share and benefit from a crowdsourced, curated cyber threat intelligence platform. Define the type and location of the remediation you wish to apply. Use the community's IP blocklist to automate your security. CrowdSec can be run on containers, virtual machines, bare metal servers, containers, or directly from your code using our API. Our cybersecurity community is destroying cybercriminals' anonymity. This is our strength. You can help us create and distribute a qualified IP blocklist that protects everyone by sharing IP addresses you have been annoyed by. CrowdSec can process massive amounts of logs faster than Fail2ban, and is 60x faster than Fail2ban.