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    Overview
    ProductRatingMost Used ByProduct SummaryStarting Price

    Nagios Core

    Score7.7 out of 10
    N/ANagios provides monitoring of all mission-critical infrastructure components. Multiple APIs and community-build add-ons enable integration and monitoring with in-house and third-party applications for optimized scaling.N/A

    Zscaler Internet Access

    Score8.9 out of 10
    N/AZscaler Internet Access™ (ZIA) is a secure web gateway (SWG), delivering cloud native cyberthreat protection and zero trust access to the internet and SaaS apps.N/A
    Pricing
    Nagios CoreZscaler Internet Access
    Editions & Modules
    Single License
    Free
    No answers on this topic
    Offerings
    Pricing Offerings
    Nagios CoreZscaler Internet Access
    Free Trial
    YesNo
    Free/Freemium Version
    YesNo
    Premium Consulting/Integration Services
    YesYes
    Entry-level Setup FeeNo setup feeNo setup fee
    Additional Details——
    More Pricing Information
    Community Pulse
    Nagios CoreZscaler Internet Access
    Considered Both Products
    Nagios Enterprises
    No answer on this topic
    Zscaler
    No answer on this topic
    Key User Insights
    Would buy again
    100%
    Would buy again
    13 Answers
    99%
    Would buy again
    284 Answers
    Delivers good value for the price
    100%
    Delivers good value for the price
    13 Answers
    98%
    Delivers good value for the price
    245 Answers
    Happy with the feature set
    100%
    Happy with the feature set
    13 Answers
    99%
    Happy with the feature set
    284 Answers
    Lived up to sales and marketing promises
    91%
    Lived up to sales and marketing promises
    10 Answers
    97%
    Lived up to sales and marketing promises
    207 Answers
    Implementation went as expected
    100%
    Implementation went as expected
    12 Answers
    93%
    Implementation went as expected
    227 Answers
    Features
    Nagios CoreZscaler Internet Access
    Identity Management
    Comparison of Identity Management features of Nagios Core and Zscaler Internet Access
    Feature
    Nagios Core
    -
    Ratings
    Zscaler Internet Access
    5.0
    2 Ratings
    55% below category average
    Multi-Factor Authentication00 Ratings5.02 Ratings
    Endpoint Security
    Comparison of Endpoint Security features of Nagios Core and Zscaler Internet Access
    Feature
    Nagios Core
    -
    Ratings
    Zscaler Internet Access
    10.0
    2 Ratings
    11% above category average
    Endpoint Detection and Response (EDR)00 Ratings10.02 Ratings
    Threat Intelligence
    Comparison of Threat Intelligence features of Nagios Core and Zscaler Internet Access
    Feature
    Nagios Core
    -
    Ratings
    Zscaler Internet Access
    8.5
    216 Ratings
    7% above category average
    Network Analytics00 Ratings8.7217 Ratings
    Threat Recognition00 Ratings8.3214 Ratings
    Vulnerability Classification00 Ratings8.5191 Ratings
    Automated Alerts and Reporting00 Ratings8.2205 Ratings
    Threat Analysis00 Ratings8.8203 Ratings
    Threat Intelligence Reporting00 Ratings8.5199 Ratings
    Automated Threat Identification00 Ratings8.5192 Ratings
    Zero Trust Security
    Comparison of Zero Trust Security features of Nagios Core and Zscaler Internet Access
    Feature
    Nagios Core
    -
    Ratings
    Zscaler Internet Access
    8.9
    262 Ratings
    4% above category average
    Continuous Verification00 Ratings8.7245 Ratings
    Secure Web Gateways00 Ratings9.0236 Ratings
    Network Flow Control00 Ratings8.1217 Ratings
    Network Traffic Analysis00 Ratings8.8219 Ratings
    Segmentation Leveraging00 Ratings8.6194 Ratings
    Admin Access Control00 Ratings9.1230 Ratings
    Network Data Encryption00 Ratings8.8207 Ratings
    Network Topology Mapping00 Ratings10.02 Ratings
    Best Alternatives
    Nagios CoreZscaler Internet Access
    Small Businesses
    No answers on this topic
    No answers on this topic
    Medium-sized Companies
    Icinga
    Score9 out of 10
    No answers on this topic
    Enterprises
    HPE OneView
    Score6 out of 10
    Forescout Vistaro Platform
    Score6.6 out of 10
    All AlternativesView all alternativesView all alternatives
    User Ratings
    Nagios CoreZscaler Internet Access
    Likelihood to Recommend
    8.5
    (44 ratings)
    9.0
    (295 ratings)
    Likelihood to Renew
    9.9
    (3 ratings)
    8.4
    (6 ratings)
    Usability
    4.0
    (1 ratings)
    8.8
    (279 ratings)
    Availability
    -
    (0 ratings)
    7.3
    (1 ratings)
    Performance
    -
    (0 ratings)
    5.5
    (1 ratings)
    Support Rating
    7.7
    (9 ratings)
    7.1
    (10 ratings)
    Online Training
    -
    (0 ratings)
    7.3
    (1 ratings)
    Implementation Rating
    -
    (0 ratings)
    8.4
    (2 ratings)
    Configurability
    -
    (0 ratings)
    8.4
    (2 ratings)
    Product Scalability
    -
    (0 ratings)
    7.3
    (1 ratings)
    Vendor post-sale
    -
    (0 ratings)
    8.4
    (3 ratings)
    Vendor pre-sale
    -
    (0 ratings)
    7.3
    (2 ratings)
    User Testimonials
    Nagios CoreZscaler Internet Access
    Likelihood to Recommend
    Nagios Enterprises
    Nagios monitoring is well suited for any mission critical application that requires per/second (or minute) monitoring. This would probably include even a shuttle launch. As Nagios was built around Linux, most (85%) plugins are Linux based, therefore its more suitable for a Linux environment.
    As Nagios (and dependent components) requires complex configurations & compilations, an experienced Linux engineer would be needed to install all relevant components.
    Any company that has hundreds (or thousands) of servers & services to monitor would require a stable monitoring solution like Nagios. I have seen Nagios used in extremely mediocre ways, but the core power lies when its fully configured with all remaining open-source components (i.e. MySQL, Grafana, NRDP etc). Nagios in the hands of an experienced Linux engineer can transform the organizations monitoring by taking preventative measures before a disaster strikes.
    Incentivized
    Read full review
    Zscaler
    I feel the product is very good to set up basic standards and go beyond that in many aspects. However, due to being sometimes too simple, it limits the ability to do some other complex changes. Having the ability to do both would be ideal for some, if not all, of the products within Zscaler Internet Access. A simple setup to have it stand-up, and more advanced settings for those more experienced.
    Incentivized
    Read full review
    Pros
    Nagios Enterprises
    • Monitoring of services is one of the biggest benefits for our company. Being able to respond in a timely fashion keeps business smooth.
    • Hardware and device monitoring are easy to set up with proper parameters.
    • Notification to key staff to be able to respond quickly makes issues go away faster.
    Incentivized
    Read full review
    Zscaler
    • Provides a secure VPN connection point for endpoint connectivity.
    • Provides the VPN connectivity in a fast and reliable connection state.
    • Very dependable, once connected the connection stays up and there's no fuss.
    • Very good at letting you know when you are not authenticated.
    • Very easy to authenticate and regain access when your session times out.
    Incentivized
    Read full review
    Cons
    Nagios Enterprises
    • Nagios could use core improvements in HA, though, Nagios itself recommends monitoring itself with just another Nagios installation, which has worked fine for us. Given its stability, and this work-around, a minor need.
    • Nagios could also use improvements, feature wise, to the web gui. There is a lot in Nagios XI which I felt were almost excluded intentionally from the core project. Given the core functionality, a minor need. We have moved admin facing alerts to appear as though they originate from a different service to make interacting with alerts more practical.
    Incentivized
    Read full review
    Zscaler
    • ZS CLI support to turn off ZIA and ZDX service specifically on mac.
    • Better visibility into failed posture devices, including a timeline and the reason the posture failed (This is about the Zscaler mobile portal: Enrolled devices --> Failed posture devices).
    Incentivized
    Read full review
    Likelihood to Renew
    Nagios Enterprises
    We're currently looking to combine a bunch of our network montioring solutions into a single platform. Running multiple unique solutions for monitoring, data collection, compliance reporting etc has become a lot to manage.
    Incentivized
    Read full review
    Zscaler
    While Zscaler Internet Access (ZIA) delivers critical value in cloud security and RBI compliance, I rate renewal likelihood 7/10 due to evolving needs versus platform limitations. Below is my rationale:
    Key Gaps:
    1. Advanced Threat Costs:
    ZIA’s add-ons (e.g., Advanced DLP, Sandboxing) incur 35%+ cost premiums – straining budgets as transaction volumes (UPI/iMobile) grow 50% YoY.
    2. API Banking Scalability:
    ZIA’s API rate limits throttle real-time policy sync during UPI peaks (10K+ TPS), forcing workarounds for finacle integrations.
    3. RBI Future-Proofing:
    Limited native support for upcoming digital rupee (CBDC) security rules requires custom development, increasing compliance overhead.
    Incentivized
    Read full review
    Usability
    Nagios Enterprises
    The Nagios UI is in need of a complete overhaul. Nice graphics and trendy fonts are easy on the eyes, but the menu system is dated, the lack of built in graphing support is confusing, and the learning curve for a new user is too steep.
    Incentivized
    Read full review
    Zscaler
    Getting started was pretty straightforward. We can tell the product is way more robust than we are using it. It started as a replacement for previous DNS-blocking content filtering, but we're exploring how this will add value with an upcoming DLP redesign and with traffic optimization at some of our remote sites with severe bandwidth limits.
    Incentivized
    Read full review
    Performance
    Nagios Enterprises
    No answers on this topic
    Zscaler
    There are often performance issues reported
    Incentivized
    Read full review
    Support Rating
    Nagios Enterprises
    I haven't had to use support very often, but when I have, it has been effective in helping to accomplish our goals. Since Nagios has been very popular for a long time, there is also a very large user base from which to learn from and help you get your questions answered.
    Incentivized
    Read full review
    Zscaler
    Zscaler's ZIA support is quick and knowledgable. They respond within 1-2 hours of you submitting your ticket. They are very thorough and are typically ready to jump on a live troubleshooting session. Our ZIA platform and how we use is it unique so at times tickets can be open for weeks but we alway get quality support compared to other unrelated product support in our enterprise
    Incentivized
    Read full review
    Implementation Rating
    Nagios Enterprises
    No answers on this topic
    Zscaler
    good the engineer give excellent support and eplanation
    Incentivized
    Read full review
    Alternatives Considered
    Nagios Enterprises
    Because we get all we required in Nagios [Core] and for npm, we have to do lots of configuration as it is not as easy as Comair to Nagios [Core]. On npm UI, there is lots of data, so we are not able to track exact data for analysis, which is why we use Nagios [Core].
    Read full review
    Zscaler
    The overall user community and scope of supportability outweighed the others on our short list. Netskope was a close second, but the risk, though small, was greater than that of bringing Zscaler aboard. We were looking for a mature, well-supported, highly functional, and fine-grained solution that met all our user and information security requirements.
    Incentivized
    Read full review
    Return on Investment
    Nagios Enterprises
    • With it being a free tool, there is no cost associated with it, so it's very valuable to an organization to get something that is so great and widely used for free.
    • You can set up as many alerts as you want without incurring any fees.
    Incentivized
    Read full review
    Zscaler
    • I would say it has a very good ROI, as whenever someone can't access something, they submit a ticket to our network engineer, and within minutes, the site is safely added to ZIA with best-practice configurations. After seeing a little of the UI from the Zenith event, it seems very user-friendly to control these policies.
    Incentivized
    Read full review
    ScreenShots

    Zscaler Internet Access Screenshots

    Screenshot of an overview of Zscaler Internet Access (ZIA), a cloud native security service edge (SSE) solution that builds on a decade of secure web gateway leadership. Offered as a scalable SaaS platform through Zscaler's security cloud, it replaces legacy network security solutions, preventing advanced attacks and data loss with a comprehensive zero trust approach. ZIA is integrated into the Zscaler Zero Trust Exchange™ to provide superior defense-in-depth, secure connectivity, end user experience, and administrative visibility and control.