Snort is an open-source, free and lightweight network intrusion detection system (NIDS) software for Linux and Windows to detect emerging threats.

OSSEC is a multiplatform, open source and free Host Intrusion Detection System (HIDS). You can tailor OSSEC for your security needs through its extensive configuration options, adding custom alert rules …

Nov 13, 2024 · There are hundreds of in-depth reviews, open source alternatives to proprietary software from large corporations like Google, Microsoft, Apple, Adobe, IBM, Cisco, Oracle, and Autodesk. …

Unlike traditional security tools such as firewalls or intrusion prevention systems, Zeek is not an active defense mechanism. Instead, it operates quietly on a sensor—whether hardware, software, virtual, or …

Apr 11, 2019 · In this article, we’ll explore five significant open-source network-based intrusion detection systems to help you enhance threat visibility across your networks.

Apr 1, 2025 · This beginner’s guide will walk you through some of the most popular open-source IDS/IPS tools, how they work, and how you can...

2 days ago · Security Onion is a free and open platform for threat hunting, enterprise security monitoring, and log management. It includes our own interfaces for alerting, dashboards, hunting, …

Jul 7, 2020 · That said, there are a decent selection of free, open-source NIDS solutions available based on commodity hardware that offer comparable levels of security and protection as commercial NIDS …

Nov 24, 2025 · Build out and easily maintain your network source of truth (NSoT). OSSEC is an Open Source Host-based Intrusion Detection System that performs log analysis, file integrity checking, …

Jan 21, 2025 · By the end of this tutorial, you will know how an IDS works and be able to build your own real-time network monitoring system using Python. Before we jump into the coding part, let’s …