There are several open-source network-based Intrusion Detection System (IDS) and Intrusion Prevention System (IPS) options available.
These tools offer various features and capabilities, allowing you to monitor network traffic, detect intrusions, and prevent malicious activities. Each has its own strengths and may be better suited for different use cases, so it’s important to evaluate your requirements and choose the one that fits your needs best.
Here are some popular ones:
Snort: Snort is one of the most widely used open-source IDS/IPS systems. It is capable of performing real-time traffic analysis and packet logging on IP networks. Snort uses a rule-based language to detect various types of network intrusions and can be customized to meet specific needs. Installation and Configuration
Suricata: Suricata is another powerful open-source IDS/IPS that offers high-performance network security monitoring. It is multi-threaded and can handle large amounts of traffic. Suricata supports rule-based detection, protocol analysis, file extraction, and more.
Bro (now Zeek): Bro, now known as Zeek, is an open-source network analysis framework that can also be used for network security monitoring. It provides powerful scripting capabilities and protocol analysis features, making it useful for both network security analysis and traffic monitoring. Installation and Configuration
Security Onion: Security Onion is a Linux distribution that integrates several open-source security tools, including IDS/IPS components like Snort and Suricata. It provides a ready-to-use platform for network security monitoring and incident response. Installation and Configuration
Suricata-IDS Pro: Suricata-IDS Pro is a commercial version of Suricata that offers additional features and professional support. While the community edition of Suricata is free and open-source, the pro version provides enhanced capabilities and enterprise-level support.