CISO Tribune

Vendor comparison · 2 companies

Corelight vs FireMon

Corelight sells the Open NDR Platform, which transforms network data into evidence. FireMon is a network security company focused on firewall policy control for the hybrid enterprise. CISO Tribune files both under Network visibility and traffic brokering. This page sets the two records side by side: what each sells, where it is based, who owns and funds it, the customers it names and its recent news, each fact numbered to its source.

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  • Corelight
  • FireMon
Corelight vs FireMon: Products, Customers and Funding Compared
CorelightCorelight sells the Open NDR Platform, which transforms network data into evidence.corelight.comFireMonFireMon is a network security company focused on firewall policy control for the hybrid enterprise.firemon.com
What it sells
  • Investigator[1][4][9][10][12][13][15][18]A SaaS-based NDR platform for investigations. It uses Agentic Triage playbooks to triage alerts.
  • Corelight Sensors[8][12][13]Sensors that capture a copy of traffic out-of-band and turn it into network evidence with Zeek.
  • Smart PCAP[1][4][12]Links Zeek logs, detections and extracted files to only the packets needed for investigations.
  • AI/ML detections[8]A subscription-based module of AI/ML detections that can be purchased with Corelight Sensors.
  • Threat Intelligence[4][8][13]A licensed feature for Corelight Sensors and Investigator.
  • Cloud Sensors[14]Corelight sensors for cloud networks, available for AWS, GCP and Azure.
  • Security Manager[5][7]The foundational platform that the Policy Planner and Risk Analyzer add-on modules require.
  • Policy Planner[5]FireMon's firewall change automation software.
  • Policy Optimizer[2][5]Handles identifying redundant, shadowed, or unused rules.
  • Risk Analyzer[7]An add-on module for Security Manager that correlates vulnerabilities with network policy.
  • Workbench Agentic AI[5]A guided, AI-assisted experience for rule recommendations in Workbench.
Categories
Headquarters
San Francisco, United States[3]Not stated on its pages
Founded
2016Not stated on its pages
Ownership and funding
Not stated on its pagesNot stated on its pages
Named customers
Not stated on its pagesNot stated on its pages
Recent news
  • October 6, 2026Corelight announced the establishment of Corelight Canada, a standalone entity intended to work more closely with customers, partners and public sector organizations in Canada.[17]
  • July 27, 2026Corelight announced the appointment of Amanda Berger as its Chief Customer Officer.[5]
  • June 9, 2026Corelight announced that its Open NDR Platform, including Investigator and Hosted Fleet Manager, was listed on the FedRAMP Marketplace as FedRAMP In Process at the Class C (Moderate) level.[18]
  • June 9, 2026Corelight announced it has reached FedRAMP In Process status.[6]
  • October 27, 2026FireMon unveiled AI agents for its platform that handle investigation and planning steps behind firewall policy changes.[14]
  • October 20, 2026FireMon announced an integration with Akamai Guardicore Segmentation that extends its policy control for microsegmentation.[13]
G2 and Gartner Peer Insights
  • G2: listed, seen November 5, 2026[7]
  • Gartner Peer Insights: Not stated on its pages
  • G2: listed, seen November 14, 2026[15]
  • Gartner Peer Insights: Not stated on its pages
Who it fits
From its own pages, Corelight sells mainly to SOC teams that want network evidence for detection, investigation and threat hunting. Corelight describes customers extending visibility across hybrid and multi-cloud environments. Customer examples on its pages include a global beauty retailer protecting point-of-sale terminals and a major U.S mortgage lender with data centers and multi-cloud workloads in AWS and Azure.FireMon's products are aimed at organizations that manage rules and prove compliance across on-premises, virtual, and cloud network controls. FireMon describes buyers who run multi-vendor firewalls, cloud networks, and microsegmentation environments. FireMon is channel-only by design, and resellers, MSSPs, GSIs, distributors, and technology partners can bring FireMon into the architectures and services they already deliver.
Last verified
September 27, 2026November 13, 2026

Where they overlap

  • Corelight and FireMon are both filed under Network visibility and traffic brokering.

Where they differ, field by field

  • Corelight's primary category is Network detection and response; FireMon's is Microsegmentation.
  • FireMon is also filed under Vulnerability management.
  • Corelight lists Investigator, Corelight Sensors, Smart PCAP, AI/ML detections, Threat Intelligence and 1 more. FireMon lists Security Manager, Policy Planner, Policy Optimizer, Risk Analyzer and Workbench Agentic AI.
  • Corelight is headquartered in San Francisco, United States.
  • Corelight was founded in 2016.

What it sells: Corelight

What Investigator does[1][4][9][10][12][13][15][18]
Investigator is Corelight's SaaS-based NDR platform that streamlines complex investigations. Agentic Triage uses transparent, expert-written playbooks. SIEM Verdict Export sends triage verdicts, reasoning chains and evidence links into a SIEM.
What Corelight Sensors does[8][12][13]
The sensor captures a copy of all traffic out-of-band, then deduplicates and cleans the data. Powered by Zeek, it performs deep protocol parsing across 70+ data types. The evidence is routed to Investigator, a SIEM or a data lake.
What Smart PCAP does[1][4][12]
Corelight Smart PCAP links Zeek logs, detections and extracted files to only the packets needed for investigations. Corelight says it lets teams store packets longer and find them faster.
What AI/ML detections does[8]
AI/ML detection is a subscription-based module that can be purchased with Corelight Sensors. It can be deployed across air-gapped, hybrid, cloud or multicloud environments. Models are enabled, managed and tuned through Fleet Manager. Many detections run directly on-sensor with no cloud dependency.
What Threat Intelligence does[4][8][13]
Threat Intelligence is a licensed feature for Corelight Sensors and Investigator. It is supported on all sensor options. It is managed through Fleet Manager or the sensor's Threat Intelligence framework.
What Cloud Sensors does[14]
Corelight Cloud Sensors are available for AWS, GCP and Azure. Corelight supports AWS, Azure and GCP native packet mirroring, and third-party packet brokers.

What it sells: FireMon

What Security Manager does[5][7]
FireMon Security Manager is the foundational platform required by the Policy Planner add-on module. Risk Analyzer requires Security Manager for policy visibility, network topology, and analytics.
What Policy Planner does[5]
Policy Planner manages the full change lifecycle, analyzing proposed rules in real time, checking them against compliance requirements, and deploying them across on-premises and cloud environments. Policy Planner performs pre-deployment compliance checks against requirements such as PCI DSS, NERC-CIP, NIST, and DORA. Policy Planner integrates with ServiceNow and Remedy for ticket tracking and automated reviews. Policy Planner handles modifications to network objects, service objects, and group objects across hybrid and multi-cloud environments.
What Policy Optimizer does[2][5]
Policy Optimizer handles identifying redundant, shadowed, or unused rules. Policy Optimizer adds event-driven rule review and recertification to keep policy clean over time. Paired with Policy Planner, Policy Optimizer makes rule decommissioning fully automated.
What Risk Analyzer does[7]
Risk Analyzer provides real-time risk assessment by correlating vulnerabilities with network policy, simulating attack paths, and prioritizing remediation based on threat impact. Risk Analyzer integrates with scanners like Qualys, Rapid7, and Tenable. Risk Analyzer detects misconfigurations, exposed paths to vulnerable assets, overly permissive rules, and potential policy violations that increase attack surface. Risk Analyzer supports what-if analysis for attacks and changes.
What Workbench Agentic AI does[5]
Workbench Agentic AI provides a guided, AI-assisted experience for rule recommendations. The agentic AI assistant analyzes the environment to identify impacted devices and policies, then generates rule and object change recommendations. Engineers review and save the proposed changes, and the plan then proceeds through the applicable assessment and approval workflow before implementation. Workbench Agentic AI requires a FireMon Insights activation.

Questions about Corelight and FireMon

What do Corelight and FireMon sell?
Corelight sells Investigator, Corelight Sensors, Smart PCAP, AI/ML detections, Threat Intelligence and 1 more. FireMon sells Security Manager, Policy Planner, Policy Optimizer, Risk Analyzer and Workbench Agentic AI.
Are Corelight and FireMon in the same category?
They share Network visibility and traffic brokering. Corelight's primary category is Network detection and response and FireMon's is Microsegmentation.
Where are Corelight and FireMon headquartered?
Corelight is headquartered in San Francisco, United States.
When were Corelight and FireMon founded?
Corelight was founded in 2016.
Who are Corelight and FireMon sold to?
From its own pages, Corelight sells mainly to SOC teams that want network evidence for detection, investigation and threat hunting. FireMon's products are aimed at organizations that manage rules and prove compliance across on-premises, virtual, and cloud network controls.
What have Corelight and FireMon announced recently?
October 6, 2026: Corelight announced the establishment of Corelight Canada, a standalone entity intended to work more closely with customers, partners and public sector organizations in Canada. October 27, 2026: FireMon unveiled AI agents for its platform that handle investigation and planning steps behind firewall policy changes.

About Corelight

Corelight sells the Open NDR Platform, which transforms network data into evidence. Corelight says that evidence powers AI-driven detection and expert-authored workflows.

Corelight sensors capture a copy of all traffic out-of-band. The sensor then deduplicates and cleans the data, discarding redundant multicast traffic. Powered by Zeek, the sensor performs deep protocol parsing across 70+ data types. The resulting evidence is routed to Corelight Investigator, a SIEM, or a data lake for long-term forensics.[9]

Investigator is Corelight's SaaS-based NDR platform. Corelight says it streamlines complex investigations by eliminating repetitive review steps and enables up to 10x faster triage. Agentic Triage uses transparent, expert-written playbooks to follow consistent triage logic for every investigation. SIEM Verdict Export sends every triage verdict, including the reasoning chain, evidence links and recommended next steps, directly into the customer's SIEM. Investigator also offers host isolation, IP blocking and identity actions through integrated EDR, firewall and identity provider workflows.[1][10]

Corelight fuses machine learning, behavioral analytics and curated signatures in its threat detection. AI/ML detection is a subscription-based module that can be purchased with Corelight Sensors, and AI/ML models are enabled, managed and tuned through Fleet Manager. Many of these detections run directly on-sensor, with no cloud dependency. Threat Intelligence is a licensed feature for Corelight Sensors and Investigator, and it is supported on all sensor options. Corelight Smart PCAP links Zeek logs, detections and extracted files to only the packets needed for investigations.[8][11][12][13]

For cloud environments, Corelight Cloud Sensors are available for AWS, GCP and Azure. Corelight supports AWS, Azure and GCP native packet mirroring, and third-party packet brokers. Performance and Asset Visibility is a Corelight Open NDR module that passively extracts asset classification and network performance telemetry from traffic the sensors are already collecting.[14][15]

Corelight also sells services. Corelight says it can provide a resident engineer to work alongside a customer's team, and services can be purchased standalone or bundled with the platform. Corelight describes integrations with Splunk Enterprise Security and Splunk SOAR, and with Microsoft Defender, Microsoft Sentinel and Microsoft Entra ID.[1][2][10][12][14][16]

Corelight on the record

Sources

Corelight full record

  1. [1]All productsCorelight · corelight.com · undated page, accessed September 27, 2026 · Tier A
  2. [2]About corelightCorelight · corelight.com · undated page, accessed September 27, 2026 · Tier A
  3. [3]H i g growth partners invests in corelights 75m series d financingH.I.G. Capital · hig.com · published September 3, 2021 · Tier C
  4. [4]Corelight | Evidence-Based NDR & Threat Hunting PlatformCorelight · undated page, accessed October 24, 2026 · Tier A
  5. [5]Corelight Welcomes Veteran Customer Advocate Amanda Berger as Chief Customer OfficerCorelight · published July 27, 2026 · Tier A
  6. [6]Corelight Achieves FedRAMP In Process Certification, Advancing Network Detection and Response for Federal Government AgenciesCorelight · published June 9, 2026 · Tier A
  7. [7]Corelight Reviews 2026: Details, Pricing, & Features - G2G2 · undated page, accessed October 24, 2026 · Tier C
  8. [8]AI/ML Detections: Transparent, Evidence-Based NDR | CorelightCorelight · undated page, accessed November 5, 2026 · Tier A
  9. [9]Network Visibility: Complete Visibility for Security Operations | CorelightCorelight · undated page, accessed November 5, 2026 · Tier A
  10. [10]Investigator: Agentic AI Triage for NDR | CorelightCorelight · undated page, accessed November 5, 2026 · Tier A
  11. [11]AI-Powered Threat Detection Platform | CorelightCorelight · undated page, accessed November 5, 2026 · Tier A
  12. [12]Intrusion Detection System (IDS) Powered by Suricata | CorelightCorelight · undated page, accessed November 5, 2026 · Tier A
  13. [13]Cyber Threat Intelligence for Open NDR | CorelightCorelight · undated page, accessed November 5, 2026 · Tier A
  14. [14]Cloud Solutions | CorelightCorelight · undated page, accessed November 5, 2026 · Tier A
  15. [15]Performance and Asset Visibility | CorelightCorelight · undated page, accessed November 5, 2026 · Tier A
  16. [16]Professional & Consulting Services | CorelightCorelight · undated page, accessed November 5, 2026 · Tier A
  17. [17]Corelight establishes Corelight CanadaCorelight · published October 6, 2026 · Tier A
  18. [18]Corelight Achieves FedRAMP In Process Certification, Advancing Network Detection and Response for Federal Government AgenciesPR Newswire · published June 9, 2026 · Tier A

FireMon full record

  1. [1]firemon.comFireMon · firemon.com · undated page, accessed November 13, 2026 · Tier A
  2. [2]Company | FireMonFireMon · undated page, accessed November 13, 2026 · Tier A
  3. [3]PressFireMon · firemon.com · published November 13, 2026 · Tier A
  4. [4]FireMon | Network Security Policy ControlFireMon · undated page, accessed November 14, 2026 · Tier A
  5. [5]FireMon Policy Planner | Automated Firewall Change SoftwareFireMon · undated page, accessed November 14, 2026 · Tier A
  6. [6]What Is Policy Planner Workbench? FireMon DefinitionFireMon · undated page, accessed November 14, 2026 · Tier A
  7. [7]FireMon Risk Analyzer | Attack Path & Exposure AnalysisFireMon · undated page, accessed November 14, 2026 · Tier A
  8. [8]What Is Endpoint Security? Definition | FireMonFireMon · undated page, accessed November 14, 2026 · Tier A
  9. [9]What Is Container Security? Explained | FireMonFireMon · undated page, accessed November 14, 2026 · Tier A
  10. [10]What Is Hybrid Cloud Security? | FireMonFireMon · undated page, accessed November 14, 2026 · Tier A
  11. [11]What Is CMMC Compliance? Definition | FireMonFireMon · undated page, accessed November 14, 2026 · Tier A
  12. [12]What Is Network Security Monitoring (NSM)? | FireMonFireMon · undated page, accessed November 14, 2026 · Tier A
  13. [13]FireMon Announces Integration with Akamai GuardicoreFireMon · published October 20, 2026 · Tier A
  14. [14]Exclusive: FireMon unveils AI agents to handle the legwork behind firewall policy changes - SiliconANGLESiliconANGLE · published October 27, 2026 · Tier B
  15. [15]Policy Manager Reviews 2026: Details, Pricing, & FeaturesG2 · undated page, accessed November 14, 2026 · Tier C

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