Tenable Nessus vs. Zscaler Internet Access

Overview
ProductRatingMost Used ByProduct SummaryStarting Price
Tenable Nessus
Score 8.8 out of 10
N/A
Tenable headquartered in Columbia offers Nessus, a vulnerability scanning and security assessment solution used to analyze an entity's security posture, vulnerability testing, and provide configuration assessments.
$2,790
Zscaler Internet Access
Score 8.8 out of 10
N/A
Zscaler 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
Tenable NessusZscaler Internet Access
Editions & Modules
1 Year
$2,790.00
1 Year + Advanced Support
$3,190.00
2 Years
$5,440.00
2 Years + Advanced Support
$6,240.00
3 Years
$7,951.00
3 Years + Advanced Support
$9,151.00
No answers on this topic
Offerings
Pricing Offerings
Tenable NessusZscaler Internet Access
Free Trial
NoNo
Free/Freemium Version
NoNo
Premium Consulting/Integration Services
NoYes
Entry-level Setup FeeNo setup feeNo setup fee
Additional Details
More Pricing Information
Community Pulse
Tenable NessusZscaler Internet Access
Features
Tenable NessusZscaler Internet Access
Threat Intelligence
Comparison of Threat Intelligence features of Product A and Product B
Tenable Nessus
6.2
4 Ratings
26% below category average
Zscaler Internet Access
8.4
137 Ratings
8% above category average
Network Analytics1.02 Ratings8.3137 Ratings
Threat Recognition7.04 Ratings8.1134 Ratings
Vulnerability Classification9.53 Ratings8.3120 Ratings
Automated Alerts and Reporting10.03 Ratings8.3130 Ratings
Threat Analysis5.53 Ratings8.7128 Ratings
Threat Intelligence Reporting5.03 Ratings8.5127 Ratings
Automated Threat Identification5.53 Ratings8.5124 Ratings
Vulnerability Management Tools
Comparison of Vulnerability Management Tools features of Product A and Product B
Tenable Nessus
7.5
4 Ratings
10% below category average
Zscaler Internet Access
-
Ratings
IT Asset Realization7.03 Ratings00 Ratings
Authentication7.53 Ratings00 Ratings
Configuration Monitoring8.04 Ratings00 Ratings
Web Scanning5.53 Ratings00 Ratings
Vulnerability Intelligence9.34 Ratings00 Ratings
Identity Management
Comparison of Identity Management features of Product A and Product B
Tenable Nessus
-
Ratings
Zscaler Internet Access
5.0
2 Ratings
56% below category average
Multi-Factor Authentication00 Ratings5.02 Ratings
Endpoint Security
Comparison of Endpoint Security features of Product A and Product B
Tenable Nessus
-
Ratings
Zscaler Internet Access
10.0
2 Ratings
10% above category average
Endpoint Detection and Response (EDR)00 Ratings10.02 Ratings
Zero Trust Security
Comparison of Zero Trust Security features of Product A and Product B
Tenable Nessus
-
Ratings
Zscaler Internet Access
8.8
160 Ratings
1% above category average
Continuous Verification00 Ratings8.6147 Ratings
Secure Web Gateways00 Ratings8.9142 Ratings
Network Flow Control00 Ratings8.7132 Ratings
Network Traffic Analysis00 Ratings8.5133 Ratings
Segmentation Leveraging00 Ratings8.1119 Ratings
Admin Access Control00 Ratings9.0141 Ratings
Network Data Encryption00 Ratings8.8129 Ratings
Network Topology Mapping00 Ratings10.02 Ratings
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User Ratings
Tenable NessusZscaler Internet Access
Likelihood to Recommend
9.0
(9 ratings)
8.9
(183 ratings)
Likelihood to Renew
9.1
(1 ratings)
8.0
(4 ratings)
Usability
8.0
(5 ratings)
8.4
(167 ratings)
Availability
-
(0 ratings)
7.3
(1 ratings)
Performance
-
(0 ratings)
5.5
(1 ratings)
Support Rating
7.1
(4 ratings)
8.2
(8 ratings)
Online Training
-
(0 ratings)
7.3
(1 ratings)
Implementation Rating
-
(0 ratings)
7.3
(1 ratings)
Configurability
-
(0 ratings)
7.3
(1 ratings)
Product Scalability
-
(0 ratings)
7.3
(1 ratings)
Vendor post-sale
-
(0 ratings)
7.3
(2 ratings)
Vendor pre-sale
-
(0 ratings)
7.3
(2 ratings)
User Testimonials
Tenable NessusZscaler Internet Access
Likelihood to Recommend
Tenable
It is an excellent tool for scanning servers, workstations, and network devices to identify missing patches and misconfiguration; we regularly use it to confirm patch effectiveness after the update; it also helps us for preparing audits such as iso 27001, and regulatory requirements, it also helps us to identify open ports and services that violate security.
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Zscaler
It's best suited for a distributed remote workforce, securing internet access for users from anywhere. Suitable for highly regulated industries, such as banking and Healthcare. Not a good fit for an organisation where most of its legacy is in an on-premises environment. Bandwidth-intensive industries like media/entertainment firms.
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Pros
Tenable
  • Nessus is best at performing vulnerability scans, in fact, it gives findings and moreover accurate findings of the assessments. It does not do penetration testing or exploit the vulnerabilities because it is concerned about scanning the systems/applications.
  • In fact, Nessus has multiple profiles/policies to perform different types of scans such as, scans oriented for PCI-DSS, malware scans, web application scans, bad shell shock detection scan to name a few.
  • Nessus has the ability to classify the vulnerabilities into risk-based categories from critical to even informational which I think is one of the things that separates Nessus from other vulnerability scanners.
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Zscaler
  • Single Pane of Glass Management - Everything is very easy to access and monitor the entire environment from an internet security perspective.
  • Install Flexibility - We can and do install Zscaler Internet Access on both our client devices as well as our SD-WAN appliances and servers. This allows us to control internet security even on devices without an agent in our networks.
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Cons
Tenable
  • The tool has lots of options for setting up before scanning any device, this methodology could be simplified further with default configuration for various devices predefined, anyhow we can use this technique by making use of policies.
  • For advanced users we cannot disable the plugins inside the plugin groups, we can enable the whole set of plugins at a time, for few hundreds its ok, but thousands of plugins are of waste of resource and time.
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Zscaler
  • The logs feel kind of lack luster
  • When issues are arising with SSL Inspection, logs show everything working despite end user experience
  • Could use some kind of global find functionality or something that would allow you to search the entire configuration for matching URLs and the like
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Likelihood to Renew
Tenable
Nessus is best and easy to use application for Vulnerabilities finding and reporting, it has multiple platforms and wide scope covering almost all devices for security improvement so far, thus we are very likely to continue its services.
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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.
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Usability
Tenable
Tenable Nessus is a great product and provides a lot of value, but it is difficult to set up and use and the amount of data it generates can be overwhelming. It does help us prioritize based on the severity of the detection, however there are sometimes mitigating factors that we have implemented that Nessus does not account for, which causes lots of noise in the reports.
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Zscaler
The application is easy to install and configure on all Windows devices. To troubleshoot any internet issue, we can easily collect all the relevant logs from Zscaler and check the exact issue. The only problem is with the uninstall, as a dedicated crew needs to provide the password.
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Performance
Tenable
No answers on this topic
Zscaler
There are often performance issues reported
Read full review
Support Rating
Tenable
I haven't needed to contact support yet. But issues are easily solved with a quick internet search which means support and by extension, the larger community are involved and knowledgeable.
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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
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Alternatives Considered
Tenable
Sometimes when we identify a vulnerability with Nessus that has an exploit, we made a proof of concept with Metasploit in order to show to the IT managers the importance of the software/hardware hardening.
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Zscaler
Zscaler Intenet Access outperformed the competition due to its lightning-fast policy delivery and cross-compatibility. It is easy to track employee usage and block unnecessary websites, reducing company internet usage. Zscalar installed on every system increases cloud-based software bandwidth, decreasing user turnaround time and increasing efficiency.
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Return on Investment
Tenable
  • Nessus certainly has a positive impact while me while performing my job, either as security research, or performing vulnerability assessments for clients. It gives a lot of information about the system/application after performing scans. The number of false positives is also less compared to other vulnerability scanners.
  • The professional edition is very useful as policy templates available in this edition are very handy and useful even to perform compliance scan like PCI DSS scan.
  • Also, the ability to export the scan results into reports in formats like HTML, PDF is very useful which could be for performing system/application reviews.
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Zscaler
  • Has allowed us to remove other products that were suboptimal
  • Saved us money overall by stacking it with other Zscaler products
  • Created a more secure work environment for our users through intelligent internet policies that are not needlessly restrictive while still maintaining security best practices
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.