Nagios Core vs Tenable SecurityCenter Continuous View [EOL] comparison

Nagios and Tenable are both solutions in the Network Monitoring Software category. Additionally, 80% of Nagios users are willing to recommend the solution, compared to 100% of Tenable users who would recommend it.

Nagios Core

Read 51 Nagios Core reviews

8,005 Views
6,484 Comparison Views

80% willing to recommend

Tenable SecurityCenter Cont...

Read 4 Tenable SecurityCenter Continuous View [EOL] reviews

100% willing to recommend

Nagios Core

Tenable SecurityCenter Cont...

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Executive Summary

We performed a comparison between Nagios Core and Tenable SecurityCenter Continuous View [EOL] based on real PeerSpot user reviews.

Find out what your peers are saying about Zabbix, SolarWinds, Datadog and others in Network Monitoring Software.

To learn more, read our detailed Network Monitoring Software Report (Updated: June 2026).

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Network Monitoring Software

June 2026

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Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:

Categories and Ranking

Nagios Core

Average Rating

8.2

Reviews Sentiment

7.3

Number of Reviews

Ranking in other categories

Network Monitoring Software (12th), IT Infrastructure Monitoring (12th)

Tenable SecurityCenter Cont...

Average Rating

8.4

Number of Reviews

Ranking in other categories

No ranking in other categories

Featured Reviews

Husham Yaqoob

Senior System Administrator at Interactive Group

Monitoring solution provides comprehensive visibility across IT infrastructure

The good thing about Nagios Core is it covers everything. Everything in the IT domain, you can monitor anything. You can even monitor printers, the ports of printers, Core workstations, and storage. You can monitor the workflow Core and the utilization of computes. If you want to grasp everything of your IT equipment on a single interface, you can use Nagios. It's the best one. It provides dashboards, and you can also configure your emails and alerts with it. If something is critical, you can configure it to notify via emails. It has a very handy dashboard, providing live alerts and visibility for everything.

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SATYAVRAT MISHRA

AVP - Corporate IT at Godrej

A stable security solution with a useful visibility feature

We use it to scan all of our servers and network devices on a monthly basis. Then based on the outcome, we do the patching depending on high availability, and so on Through porting, we can see how the improvement is happening over a period of time. We can see the overall scenario from the last…

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Quotes from Members

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:

Pros

"The reporting structure and the feature set are valuable to me."

"We have the ability right now to see and create reports to tell whether or not we're meeting our SLAs on our production servers, through it."

"The application performance monitoring feature is valuable, and we primarily use it for user experience monitoring and determining which layer the problem happened to resolve it."

"The solution is very complete and mostly easy to manage."

"It has made the life of the network operations staff more proactive in managing the resources of the infrastructure. It prevents disasters long before they can take place."

"You should really try Nagios; it will help a lot and I have found that it is the best buddy for system admins."

"The most valuable feature of Nagios Core is it allows us to develop and add as many plugins as we want."

"Alert calls occur anytime a service goes down or a matrix is difficult and that helps us to quickly restore service and transfer work."

More Nagios Core pros

"Tenable is already in the top three risk management solutions and Tenable is already a leader of vulnerability risk management."

"The first of the valuable features is how easy it is to access all of the information that's gathered from the assessments... With a lot of other technologies, like Rapid7, if you're using Nexpose you effectively have to be a DBA to get some of the lower-level results from the scans. And Qualys wasn't very intuitive."

"The scanning itself is really the core of the tool, and it's what we're most interested in."

"We can manage everything with only a single console on the Tenable SecurityCenter. We can pull and define the policy. We can perform every task on the Tenable SecurityCenter."

"Through porting, we can see how the improvement is happening over a period of time. We can see the overall scenario from the last year, where were we were and where we currently stand."

"SecurityCenter enables us to find all the vulnerabilities, export that data, prioritize it, and address the highest-risk vulnerabilities."

"The next big one is supportability. In a large enterprise, we have many types of technologies. The technology we previously had didn't even support authentication to a lot of those technologies."

"The level of visibility Tenable provides us, compared to our previous solutions is night and day."

Cons

"The configuration and reporting modules need to be improved."

"It's not that easy to install the product itself. Also, the UI is a bit hard for regular users to navigate through."

"t was a little hard to get our setup represented in the configuration."

"We use the free version of Nagios, which needs some administrative skills in order to configure correctly."

"They should simplify the features so it becomes easier to setup out of the box."

"A better UI for graphing would make it better. The present graphs are not very friendly and good to see."

"Nagios Core would benefit from aggregations if a particular server goes down."

"The tool needs to improve the integrations."

More Nagios Core cons

"For dynamic application scanning, it's a two out of ten."

"One area which is missing is cloud security because there are a lot of configurations. Rapid7 has a product called a DV cloud. I would like to have a similar kind of solution and feature."

"There are certain circumstances where they may have found a vulnerable service and they just removed the service completely from the device because nobody was using it. There's no way to go into SecurityCenter and mark it, to say, "This is no longer an issue. It doesn't exist anymore." Or, "The risk was accepted for one year, so let's not report it as 'high' until that one year period is done." The handling of operational flow around vulnerability management could be improved."

"When it comes to... dynamic application scanning, I think they are lagging behind the curve. They have a lackluster solution, to the point where I think they need to determine, as a company, whether or not that's a space they even want to play in."

"In terms of what could be improved, some customers have a problem with SecurityCenter's ticket system. If I want them to assign one of the issues, they may want to assign someone to it or to assign it somewhere else and I may want to break up the ticket."

Pricing and Cost Advice

"We have saved a lot of time, money, and effort in reducing disaster times, which is owed to Nagios quick alerting."

"We are using the free version of Nagios Core."

"It's free."

"Nagios Core is free to use."

"The product is cheaply priced."

"The solution is expensive."

"The Nagios Core (PNP4Nagios + Core) is free and can be setup by Netadmin within a few hours. The only additional cost is the cloud server."

"It's free."

More Nagios Core pricing and cost advice

"We did a three-year deal where the cost is amortized over the three years. The Elite Support was an additional cost to the standard licensing fees... If you use Security Center, most of the time it is on-premise, so you're going to have some sort of infrastructure to build out and there's going to be a cost associated with that."

"Pricing-wise, it's fine. It's not an expensive product. That's not an issue."

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Top Industries

By visitors reading reviews

Manufacturing Company

Comms Service Provider

Financial Services Firm

Construction Company

No data available

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	20
Midsize Enterprise	11
Large Enterprise	24

No data available

Questions from the Community

What is your experience regarding pricing and costs for Nagios Core?

Nagios Core is a free and open-source product. We don't charge for the product itself, but we charge for the man-hour costs related to installation, configuration, ongoing operation, and maintenance.

See all answers

What needs improvement with Nagios Core?

The dashboard should be improved. It's very simple. I don't have a very clear or specific suggestion. You can change the skin of the dashboard, however, it's good for me.

See all answers

What is your primary use case for Nagios Core?

I was a senior system administrator. I've been using Nagios Core for more than ten years now. It can be used to monitor hosts, such as machines, and monitor services of any kind. I'm using it to mo...

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Comparisons

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Compared 6% of the time

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Compared 5% of the time

Centreon vs Nagios Core

Compared 4% of the time

OpenNMS vs Nagios Core

Compared 4% of the time

Nagios XI vs Nagios Core

Compared 4% of the time

More Nagios Core Competitors

ThousandEyes vs Tenable SecurityCenter Continuous View [EOL]

Compared 100% of the time

More Tenable SecurityCenter Continuous View [EOL] Competitors

Product Reports

Buyer's Guide

Nagios Core

July 2026

Download Nagios Core product report

Buyer's Guide

Tenable SecurityCenter Continuous View [EOL]

June 2026

Tenable SecurityCenter Continuous View [EOL] report

Download Tenable SecurityCenter Continuous View [EOL] product report

Also Known As

No data available

SecurityCenter Continuous View, SecurityCenter CV

Overview

Nagios Core offers a versatile monitoring solution that efficiently manages notifications, reporting, and resource usage. Its open-source architecture provides flexibility and customization options for comprehensive infrastructure health management.

Nagios Core, known for its extensible plugin architecture, proactively enhances infrastructure management with customizable notifications and reliable reporting. Seamlessly integrating various plugins, it offers real-time dashboards and efficient alerting systems for thorough monitoring. Its adaptability and ease of configuration make it popular among users seeking flexible monitoring solutions. However, improvements in the web interface, scalability, performance, and visualization are needed to enhance accessibility. Users seek better alert mechanisms, more robust PDF export features, and simpler setup processes for increased efficiency.

What are the key features of Nagios Core?

Customizable Notifications: Tailor alerts to suit specific needs.
Reliable Reporting: Provides detailed insights into system performance.
Light Resource Usage: Operates efficiently with minimal resource demands.
Extensible Plugin Architecture: Supports a wide range of third-party integrations.
Real-Time Dashboards: Offers instant insights into system health.

What benefits should users expect from Nagios Core?

Flexibility: Allows detailed customization for unique monitoring requirements.
Open-Source Nature: Encourages community-driven enhancements and support.
Integration Capabilities: Facilitates seamless interaction with other tools and platforms.
Adaptability: Supports monitoring across different environments seamlessly.

In many industries, Nagios Core is integral to monitoring infrastructure and services, including cloud servers, applications, and network devices. Users rely on it for issue detection, capacity planning, and maintaining system stability in environments like AWS and on-premise servers. Its capabilities in CPU, memory, and bandwidth monitoring along with alert systems support sectors needing real-time oversight of critical equipment.

Nagios

SecurityCenter Continuous View is the market-leading continuous network monitoring platform. It integrates SecurityCenter along with multiple Nessus Network Monitor sensors and Log Correlation Engine (LCE) to provide comprehensive continuous network monitoring.

Tenable

Sample Customers

Airbnb, Cisco, PayPal, FanDuel

Methodist Healthcare Ministries

Buyer's Guide

Network Monitoring Software

June 2026

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