Nagios Network Analyzer review
A capable Nagios-centered flow analyzer for teams comfortable with Linux and self-hosting.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Nagios Network Analyzer is an on-premises network traffic analysis product for IT teams investigating bandwidth use, network conversations, endpoints, and capacity. It collects NetFlow, sFlow, jFlow, and IPFIX from routers, switches, firewalls, and servers, then presents flow-level charts by address, port, and protocol. Top-talker analysis, saved queries, traffic profiles, dashboards, reports, traceroutes, and threshold-based alerts give teams several ways to examine traffic and respond to changes.
Pricing is centered on one license rather than recurring seat-based plans. The Nagios Network Analyzer License costs $4,995 one-time, and the first year of Maintenance & Support is included. A 30-day fully functional trial is available. The paid license includes flow collection and analysis, bandwidth monitoring, alerting, and reports. This structure suits organizations that prefer a perpetual license and can budget for an upfront purchase, while the cost and self-hosted deployment make it less suitable for teams seeking a low-cost or hosted starting point.
Its strongest ecosystem fit is the Nagios family: Nagios XI, Nagios Fusion, and Nagios Core are supported integrations. Optional Nmap, Wireshark, and Suricata integrations can extend network discovery, packet analysis, and security-focused workflows. Active Directory, LDAP, Slack, and SNMP are also listed integrations. Deployment remains on the customer's own server and uses Linux, with web and API access available. Choose Nagios Network Analyzer when flow visibility must fit a Nagios-centered environment and the team can manage infrastructure; choose another tool when SaaS delivery or a smaller upfront commitment is the priority.
Nagios Network Analyzer pros and cons
- Where it wins
- Collects NetFlow, sFlow, jFlow, and IPFIX
- Analyzes bandwidth, top talkers, endpoints, and traffic profiles
- Includes alerts, reports, traceroutes, and Nagios integrations
- Where it doesn't
- Requires a customer-managed Linux server
- The license costs $4,995 one-time
- Optional integrations add separate tool dependencies
Nagios Network Analyzer fact sheet, pricing and score →
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