Abstract blue circular pattern design for the Nagios Security Toolkit hero section
Nagios Security Toolkit

You were hired to run infrastructure. Security got added along the way.

SIEMs analyze security data. The Nagios Security Toolkit delivers the visibility foundation that makes it possible.

52%

of SMBs have no in-house security professional. Responsibility lands on existing IT staff.

 Untangle SMB IT Security Report

53%

cite lack of time as their top security challenge, ahead of budget or expertise.

 DigitalOcean SMB Cybersecurity Report

4x

SMBs are targeted nearly four times more than large organizations.

Verizon DBIR 2025

The Problem

Security is no longer a separate role in most IT environments.

In many organizations, security did not come with new personnel or tools. It arrived as a result of mandatory audits, cyber insurance obligations, and incident response standards following a failure or near-miss.

IT teams now face more questions without extra time or resources:

1

Is anything unusual happening on the network?

2

Can we trace what changed on a server after an alert?

3

Do we have enough log data to satisfy an audit request?

What You Were Hired For

Keep the infrastructure running

Compliance Audit

Auditors require evidence. Logs must be centralized, retained, and searchable when needed.

Cyber Insurance Renewal

Insurers require proof of controls like monitoring, logging, and incident response capabilities to assess eligibility and coverage.

Incident Or Near-miss

Something failed. Now you need to determine what changed, when it happened, and what signals were missed.

Today

Still one person. Same budget. Same expectations.

Nagios Security Toolkit

Three tools that address those three layers.

The Nagios Security Toolkit includes the necessary components needed: Nagios XI for infrastructure monitoring, Network Analyzer for network traffic visibility, and Log Server for centralized log collection. Each tool is deployed independently on your own infrastructure.

xi dashboard layer scaled
nna dashboard layer 1 scaled
nls dashboard layer 1 scaled

Infrastructure Layer

Nagios XI (Extended Insights)

Continuously monitors apps, devices, services, operating systems, network protocols, and key system metrics such as CPU, memory, and disk I/O. Unauthorized devices are revealed as they emerge through Nmap/SNMP-based discovery.

Network Traffic Layer

Nagios Network Analyzer

Collects NetFlow, sFlow, J-Flow, and IPFIX data to visualize bandwidth utilization, traffic patterns, and top talkers. Supports custom reporting and threshold-based alerts using a variety of built-in notification methods. Integrates with Nagios XI.

Log Collection Layer

Nagios Log Server

Consolidates Syslog data from servers, firewalls, and network devices into a centralized, searchable repository. Built-in default query for failed login detection. Customizable alert rules on privilege changes and service events.

Key Features

    Learn More →
    Product Screenshot

    Infrastructure Layer

    Nagios XI (Extended Insights)

    Continuously monitors apps, devices, services, operating systems, network protocols, and key system metrics such as CPU, memory, and disk I/O. Unauthorized devices are revealed as they emerge through Nmap/SNMP-based discovery.

    Key Features

      Explore Nagios XI →
      Bridging the gap

      The Foundation for SIEM Visibility

      A SIEM detects, correlates, and investigates incidents using three types of telemetry: device state, flow, and logs. Without all three, coverage gaps reduce detection accuracy and forensic confidence.

      Flow graph diagram showing how the nagios security toolkit provides the visibility foundation required for SIEM analysis

      Nagios XI

      Supports detection by monitoring infrastructure state and flagging operational changes or threshold breaches.

      nagios network analyzer

      Supports correlation rules by adding network flow context to help link traffic behavior with system events.

      Nagios Log Server

      Supports incident investigation by providing searchable logs to reconstruct timelines and confirm root cause.

      security Maturity

      Understanding Where A SIEM Sits

      Security environments mature in stages, from basic availability checks to full event correlation. Basic monitoring only tells you whether something is up or down. At the other end, a SIEM correlates events across systems using behavioral analytics and threat intelligence.

      The Nagios Security Toolkit sits in between, delivering the visibility foundation that makes SIEM adoption work when you’re ready for it.

      security maturity curve

      Basic Uptime Monitoring

      Is this device up or down?

      Visibility Foundation

      You are here

      Powered by the Nagios Security Toolkit. Centralized logs, traffic visibility, and infrastructure monitoring with security-relevant alerting.

      Full SIEM

      Automated correlation, UEBA, threat intelligence. Dedicated analyst required. $50K+ annually.

      Ready To See How It Works?

      Walk away knowing exactly what the toolkit does and whether it fits.

      Data sovereignty

      Your infrastructure. Your data. Your terms.

      Your monitoring data never leaves your network, and your licensing comes with predictable pricing for peace of mind.

      deployment

      On-premises

      Your date stays on your servers. A hard requirement for healthcare, finance, and government compliance — and a sensible default for everyone else.

      licensing

      Perpetual

      All Nagios solutions offer node-based perpetual licensing with no recurring subscription fees, giving you predictable costs and long-term value.*

      protocols

      Standards-based

      Your network, your protocols,SNMP, syslog, NetFlow v5, v7, v9, sFlow, J-Flow, and IPFIX. If your devices already send it, Nagios already reads it.

      *Maintenance & Support are included free for the first year with all Nagios solutions, with recurring annual renewal pricing after the first year.

      Compliance

      Supports The Logging And Monitoring Controls Auditors Ask About Most.

      No single tool can make an organization compliant.

      Compliance is an organizational initiative. The Nagios Security Toolkit addresses particular technical control requirements, such as infrastructure-level logging, network monitoring, and traffic visibility features that help support your overall compliance posture.

      Get Started Today

      Ready to build your visibility foundation?

      Establish the foundation SIEMs depend on with centralized logs, device/service state monitoring, and network traffic analysis.