# SecurityOnion documentation

> SecurityOnion deployment in Yandex Cloud - IDS/IPS with Suricata and Zeek, network security monitoring, ELK-based log management, and incident response

Source: https://opennix.org/en/docs/yc/securityonion/

SecurityOnion is an open-source Linux distribution for intrusion detection, network security monitoring, and log management. It is designed to provide comprehensive security monitoring and analysis capabilities. 

Key features of SecurityOnion include:

- **Intrusion Detection Systems (IDS)**: Integrates with tools like Snort, Suricata, and Zeek (formerly known as Bro) to detect malicious activities and anomalies in network traffic.
- **Network Security Monitoring (NSM)**: Provides full packet capture and analysis using tools like Zeek, enabling deep traffic inspection.
- **Log Management**: Centralizes and analyzes logs from various sources using Elasticsearch, Logstash, and Kibana (ELK stack) for efficient log management and visualization.
- **Host-based Intrusion Detection (HIDS)**: Includes OSSEC for monitoring and analyzing the security status of the host system.
Scalability and Deployment: Supports scalable deployment options, from single sensors to distributed deployments in large environments.
- **Data Visualization and Analysis**: Uses Kibana for visualizing security events and analyzing network traffic data, allowing for quick identification of potential threats.
- **Incident Response**: Facilitates incident response processes with built-in tools for investigating and responding to security incidents.
- **Ease of Use**: Provides a comprehensive setup wizard and user-friendly interface to simplify installation, configuration, and management.

SecurityOnion is widely used by security professionals for its robust features and ability to provide in-depth monitoring and analysis.

## SecurityOnion in Yandex Cloud Guides

- [Installing SecurityOnion in Yandex Cloud](/en/docs/yc/securityonion/securityonion-yandex-cloud-install/) - step-by-step SecurityOnion deployment on a cloud virtual machine
- [Integrating pfSense with SecurityOnion](/en/docs/yc/securityonion/pfsense-securityonion-integration/) - configuring traffic mirroring from pfSense to SecurityOnion for analysis

## Related Sections

- [pfSense in Yandex Cloud](/en/docs/yc/pfsense/) - deploying pfSense with Snort and Suricata IDS/IPS integration
- [Wazuh in Yandex Cloud](/en/docs/yc/wazuh/) - alternative SIEM platform for cloud resource security monitoring