Zeek Log Monitoring

Inspect network traffic and DNS protocols for suspicious activity.

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Integration Overview

Zeek (formerly Bro) is a network analysis tool for security monitoring that converts raw network traffic into logs that summarize a broad range of network activity. Panther can collect, normalize, and monitor Zeek logs to help you identify suspicious activity in real time. Your normalized log data is then retained to power future security investigations in a data lake powered by the cloud-native data platform, Snowflake.

Use Cases for Zeek Logs

Panther’s integration supports ingestion and monitoring of more than a dozen Zeek log types. Some common security use cases for Zeek logs include:

  • Monitoring suspicious network traffic
  • Gaining a deep understanding of your network activity and discovering operational anomalies
  • Finding security threats hiding in protocols like DNS

Onboarding Zeek Logs in Panther

Panther supports ingesting Zeek logs via common Data Transport options: Amazon Web Services (AWS) S3 and SQS. Setting Zeek up in Panther is fast and easy - simply create a new Zeek log source within the Panther console, choose your preferred data transport method, and configure Zeek to push logs to your chosen data transport source.

For more details on onboarding Zeek logs or for supported log schema, you can view our Zeek documentation here.

Parsing, Normalizing, & Analyzing

As Panther ingests Zeek logs, they are parsed, normalized, and stored in a Snowflake security data lake. This allows you to write detections, identify anomalies, and conduct investigations in the context of days, weeks, or months of data.

Panther applies normalization fields to log records, which standardizes names for attributes and enables you to correlate data across all of your log sources. Panther’s handy search tools - such as Query Builder, Data Explorer, and Indicator Search - allow you to investigate your normalized logs for suspicious activity or vulnerabilities. For more information on searching logs, check out our documentation on Investigations & Search.

Detection as Code

With Panther, you aren’t confined to restrictive detections or proprietary code bases as seen in many SIEM solutions. Panther is built around detection-as-code principles, giving you the ability to write Python to define detection logic and to integrate external systems like version control and CI/CD pipelines into your detection engineering processes. This results in powerful, flexible, and reusable scripting of detections for your security team.

Pre-built detections for Zeek are available in Panther, offering you the ability to immediately monitor for common IoCs and threats. You can explore our built-in detection coverage for Zeek logs here.

Configuring Alerts

Panther generates alerts when your detection rules or policies for Zeek are triggered, and integrates with a variety of alert destinations to allow for intuitive management of any alerts. Alerts can also be sent to alert context or SOAR platforms for more remediation options.

Alerts are categorized by five different severity levels: Info, Low, Medium, High, and Critical. Your security team has the ability to dynamically assign severity based on specific log event attributes.

Customer Support

If you have any questions about onboarding or monitoring Zeek logs in Panther, our customer support team is here to help. All customers have access to support via a dedicated Slack channel, email, or in-app messenger.

You can view our documentation on configuring and monitoring Zeek logs here, or customers can sign up for the Panther Community to share best practices or custom detections for Zeek logs.

The Ideal SIEM for Zeek

With Panther, your team doesn’t have to struggle with restrictive detection logic, pay excessive costs to keep up with the growth of cloud app data, or waste time and resources on operational overhead. Panther is built by a team of security engineers who struggled with other SIEM solutions first-hand, and built an intuitive, cloud-native platform to meet today’s security needs.

Panther is a cloud-native SIEM built for security operations at scale, offering flexible detection-as-code, intuitive security workflows, and actionable real-time alerts. For a powerful, fast, and scalable SIEM solution for Zeek, request a demo or sign up for a free trial today.