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This article introduces the knowledge of "what are the top ten open source security information and event management SIEM tools". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

What is open source SIEM?

Open source SIEM tools literally open up their web security designs to the public. This gives IT staff more freedom to modify and share tool code, providing important customizability and adaptability.

In general, these open source InfoSec tools are available to enterprises free of charge; as a result, enterprises face a lower cost burden in deployment and maintenance than complete enterprise-level solutions. Although free SIEM tools do not provide the comprehensiveness of enterprise-class solutions, open source SIEM does provide reliable functionality at a reasonable cost. It is worth noting that some free SIEM tools do not impose restrictions on the data they use or retain, which makes them attractive to many small and medium-sized enterprises (SMB).

To help your business find ideal free security analysis tools, here is a list of 10 open source SIEM tools for your reference and choice!

SIEMonster

SIEMonster crosses the line between free SIEM and paid solutions because it provides a choice between the two. Like many of the listed solutions, SIEMonster provides a platform that combines multiple open source tools. Therefore, it does provide a centralized interface to control these tools, data visualization and threat intelligence. Unlike some other open source SIEM solutions, enterprises can deploy them on the cloud.

Apache Metron

As one of the open source SIEM tools, Apache Metron evolved from Cisco's Open SOC platform. Much like SIEMonster, it also brings together multiple open source solutions on a centralized platform. Apache Metron can parse and standardize security events into a standard JSON language for analysis. In addition, it can provide security alerts, rich data and tags. In addition, Apache Metron can index and store security events, which is a boon for enterprises of all sizes.

AlienVault OSSIM

AlienVault OSSIM provided by AT&T Cyber??security is an open source SIEM tool based on AlienVault USM solutions. Similar to the tools above, AlienVault OSSIM combines multiple open source projects into a single package. In addition, AlienVault OSSIM allows device monitoring and log collection. It also provides normalization and event correlation.

MozDef

Created by Mozilla, MozDef automates security event handling, providing scalability and resilience, which is particularly attractive to small and medium-sized businesses. This open source SIEM solution uses a micro-service-based architecture; MozDef provides event correlation and security alerts. Moreover, it can be integrated with multiple third parties.

OSSEC

Technically, OSSEC is an open source detection system, not a SIEM solution. However, it still provides a host agent for log collection and a central application for processing these logs. In general, this tool monitors log files and file integrity to prevent potential network threats, performs log analysis from multiple network services, and provides many alert options for IT teams.

Wazuh

Wazuh actually evolved from a different open source SIEM solution, namely OSSEC. However, Wazuh is now its own unique solution. In fact, it supports agent-based data collection and syslog aggregation. Therefore, Wazuh can easily monitor local devices. It has a unique Web UI and a comprehensive rule set, which makes it easy to implement IT management.

Prelude OSS

Prelude OSS provides an open source version of the Prelude SIEM solution. It supports multiple log formats and can be integrated with other security tools. It also normalizes event data into a standard language that can help support other network security tools and solutions. Prelude OSS also benefits from continuous development, so it can keep pace with threat intelligence.

Snort

Another open source detection system, Snort, aims to provide log analysis; it also performs real-time analysis of network traffic to eliminate potential dangers. Snort can also display real-time traffic or dump packet flows to log files. In addition, it can use output plug-ins to determine how and where data is stored on the network.

Sagan

As a platform, Sagan works almost entirely with other open source SIEM tools, Snort; Sagan supports the rules of Snort. Sagan is designed to be lightweight and can be written to an Snort database. This may be another essential tool for those interested in using Snort.

ELK Stack

This solution also applies to ELK or Elastic Stack. The ELK Stack solution also includes several free SIEM products. For example, using embedded Logstash components, ELK can aggregate logs from almost all data sources. In addition, it can associate the log data through various plug-ins, although it requires manual security rules. ELK Stack can also use other components to visualize data.

Defects of open source SIEM tools and solutions

There are many disadvantages and benefits when deploying free SIEM tools. Most open source SIEM solutions do not provide basic functions, such as full log management, visualization, automation, or third-party integration. Moreover, many free SIEM cannot handle cloud environments; this may pose a major obstacle to the digital transformation of enterprises.

Regardless of the size of your business, you should give priority to using enterprise-level SIEM solutions, and you can choose free SIEM tools when technical capabilities permit and the cost is really limited. Enterprise-level SIEM has more features to enhance enterprise network security.

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