Free TAXII for NetWitness

In the realm of cybersecurity, the effective utilisation of threat intelligence is paramount for bolstering an organisation's defences. NetWitness, a powerful security analytics platform, offers robust capabilities for ingesting and analysing this data. However, a common challenge faced by security professionals is the cost associated with premium threat intelligence feeds. Fortunately, there are avenues to leverage valuable intelligence without incurring significant expenditure. This article delves into the world of free TAXII servers and services that can be integrated with NetWitness, empowering you to build custom feeds and enrich your threat intelligence data.

Understanding TAXII and Threat Intelligence

Before we explore the free options, it's essential to grasp the fundamentals. TAXII (Trusted Automated eXchange of Intelligence Information) is an application layer protocol for exchanging cyber threat intelligence. It provides a standardised way for organisations to share and consume threat data, such as indicators of compromise (IoCs) like IP addresses, file hashes, and domain names. Threat intelligence, in essence, is information about existing or emerging threats that can be used to inform an organisation's cybersecurity strategy. Integrating diverse and up-to-date threat intelligence into a platform like NetWitness allows for proactive detection, faster incident response, and a more comprehensive understanding of the threat landscape.

The Quest for Free TAXII Servers

The pursuit of free, high-quality threat intelligence feeds can be a rewarding endeavour. While many commercial offerings exist, a growing number of community-driven and open-source projects provide valuable data. The key is to identify services that support the TAXII protocol and offer APIs or mechanisms for easy integration with NetWitness. Our exploration has identified a few prominent players in this space:

1. Hailataxii

Hailataxii is a notable project that aims to democratise access to threat intelligence. It acts as a TAXII server, aggregating various open-source threat feeds and making them available through the TAXII protocol. The platform often sources data from publicly available lists and repositories, compiling it into a structured format. For NetWitness users, Hailataxii presents an excellent opportunity to ingest a broad spectrum of threat data without any licensing fees. The integration typically involves configuring NetWitness to connect to the Hailataxii TAXII endpoint. This allows NetWitness to pull in a continuous stream of IoCs, which can then be used to enhance detection rules and enrich security event analysis.

Key Features of Hailataxii:

• Aggregates multiple open-source feeds.
• Provides data via the TAXII protocol.
• Facilitates custom feed creation.
• Free to use and integrate.

2. OTX (Open Threat Exchange) by AlienVault

AlienVault's Open Threat Exchange (OTX) is a globally recognised platform for threat intelligence sharing. While OTX is a comprehensive platform with various features, its core functionality includes providing threat data that can be accessed through APIs, and importantly, it supports TAXII. OTX is a community-driven effort, meaning that security professionals worldwide contribute their findings, creating a vast and dynamic repository of threat information. Integrating OTX with NetWitness can significantly enrich your security posture by providing access to real-time indicators of compromise, attack patterns, and threat actor profiles. The integration process typically involves obtaining API credentials from AlienVault and configuring NetWitness to query the OTX TAXII endpoint.

Why OTX is valuable for NetWitness:

• Vast community-contributed threat data.
• Real-time IoC updates.
• Supports TAXII for seamless integration.
• Free access to a significant portion of the data.

3. Limo (Anomali)

Anomali is a well-known provider of threat intelligence solutions, and their Limo platform is designed to facilitate the collection and dissemination of threat data. Limo, in its capacity as a threat intelligence platform, often supports the TAXII protocol for data sharing. While Anomali offers commercial solutions, they also provide access to certain threat intelligence feeds through their platform that can be integrated with other security tools. For organisations looking to leverage Limo's capabilities without immediate investment, exploring their free or community-accessible feeds via TAXII integration with NetWitness is a viable strategy. This allows for the consumption of curated threat intelligence, aiding in the identification of potential threats targeting your environment.

Benefits of Limo integration:

• Access to curated threat intelligence.
• TAXII compliance for easy integration.
• Potential for custom feed development.
• Free access to select feeds.

Building Custom Feeds and Enriching Data

The true power of integrating these free TAXII services lies in your ability to create custom feeds and enrich your existing threat intelligence data within NetWitness. By selectively subscribing to specific threat intelligence feeds or by filtering the data you ingest, you can tailor the intelligence to your organisation's specific needs and risk profile. For instance, if your organisation operates in a particular industry, you might prioritise threat feeds that focus on sector-specific threats.

The process of building custom feeds often involves:

• Identifying Relevant Sources: Pinpointing the TAXII servers and feeds that align with your security concerns.
• Configuration within NetWitness: Using NetWitness's ingestion tools to connect to the chosen TAXII endpoints. This may involve specifying collection names, feed types, and authentication credentials if required.
• Filtering and Refinement: Applying filters within NetWitness to select specific types of IoCs or data from the feeds, ensuring that only relevant information is processed.
• Correlation and Analysis: Once ingested, NetWitness can correlate this external threat intelligence with your internal security logs, providing context to alerts and improving the accuracy of threat detection.

Integration Considerations and Best Practices

While leveraging free TAXII services is advantageous, it's crucial to approach the integration with a strategic mindset. Here are some considerations and best practices:

Data Quality and Reliability

Free feeds, while valuable, can vary in terms of data quality and the timeliness of updates. It's important to regularly assess the reliability of the sources you are using. NetWitness's capabilities in correlating and validating data can help in this regard. Consider cross-referencing indicators from multiple free sources to increase confidence.

API Limits and Throttling

Even free services may have API usage limits or throttling policies. Understanding these limitations is essential to ensure consistent data ingestion. Monitor your integration to avoid exceeding any imposed quotas, which could lead to interruptions in your threat intelligence stream.

Security of the Integration

Ensure that the connection to the TAXII servers is secured. If authentication is required, use strong credentials and manage them securely. The data being exchanged, even if public, should be treated with appropriate care.

NetWitness Configuration

The specific steps for integrating TAXII feeds into NetWitness can vary depending on the version of NetWitness you are using. Always refer to the official NetWitness documentation for the most accurate and up-to-date integration guides. Typically, this involves configuring a new data source or feed within the NetWitness platform, specifying the TAXII server URL, the desired collections, and any necessary authentication details.

Comparison of Free TAXII Services

To aid in your decision-making, here's a simplified comparison of the discussed free TAXII services:

Frequently Asked Questions

Can I use these free feeds for commercial purposes?

The terms of use for each free TAXII service can vary. It is crucial to review the licensing and usage policies associated with Hailataxii, OTX, and Limo to understand any restrictions on commercial use. Many community-driven projects allow for commercial use, but it's always best to verify.

How often are the feeds updated?

The update frequency of free feeds can differ significantly. Some feeds may be updated in near real-time, while others might have daily or even weekly updates. It's advisable to check the documentation or community resources for each service to get an idea of their update cadence.

What if a free feed stops being available?

Reliance on a single free source can pose a risk. It's a good practice to have multiple free TAXII sources integrated with NetWitness to ensure continuity of threat intelligence. If one feed becomes unavailable, you can still rely on others.

Does NetWitness natively support TAXII?

NetWitness generally provides mechanisms for integrating with TAXII servers. The specific implementation might involve connectors or configuration settings within the platform that allow it to query and ingest data from TAXII endpoints.

Conclusion

In conclusion, while the cybersecurity landscape is constantly evolving and premium threat intelligence can be costly, there are accessible and effective free options for enriching your NetWitness deployments. By strategically integrating services like Hailataxii, OTX, and Limo, organisations can significantly enhance their threat detection and response capabilities without breaking the bank. The ability to build custom feeds and leverage community-driven intelligence empowers security teams to stay ahead of emerging threats, making these free TAXII servers invaluable assets in any cybersecurity arsenal. Remember to always stay informed about the data sources you are using and to configure your NetWitness platform for optimal threat intelligence consumption.

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