Nessus - Vulnerability Assessment Scanner by Tenable
Nessus by Tenable is a vulnerability scanner used by security teams to identify vulnerabilities, misconfigurations, and compliance violations across their infrastructure.
Built for Security Teams That Demand Results
SecOpsTool partners directly with Nessus to provide licences, professional onboarding, integration support, and ongoing expert guidance - ensuring you get the maximum return from your security investment.
Request 14-Day Free Trial →Use Cases
- Network vulnerability assessment
- Compliance scanning
- Infrastructure-as-code scanning
- Configuration and compliance audits
- Web application scanning
- External attack surface scanning
Compliance & Standards
Everything You Need from Nessus
Comprehensive features designed to accelerate your security programme and reduce risk across the entire development lifecycle.
319K+ Plugins
Tenable publishes 319K+ plugins across the Nessus library, with 100+ new plugins released weekly.
Network & Infrastructure Scanning
Scans servers, workstations, network devices, cloud instances, and OT/ICS systems for vulnerabilities and misconfigurations.
Configuration Auditing
Validates system configurations against CIS Benchmarks, DISA STIGs, PCI DSS, and custom compliance policies.
Credentialed Scanning & Live Results
Deep credentialed scans provide comprehensive internal visibility, and Live Results performs an offline vulnerability assessment with every plugin update.
Infrastructure as Code Scanning
Nessus Professional links to Terrascan so you can scan your infrastructure as code for misconfigurations before deployment.
Prioritised Risk Scoring
Nessus scores vulnerabilities with CVSS v4, EPSS and Tenable's VPR for the top 10 vulnerabilities, so prioritisation is not based on CVSS alone.
Is Nessus Right for Your Team?
Tenable describes Nessus Professional as geared towards consultants, penetration testers and SMBs, Nessus Expert as adding developers to that list, and Nessus Essentials as built for non-commercial, short-term use.
Who uses Nessus: Tenable names American Eagle Outfitters, Virtustream and World Wide Technology among its customers on its own website.
Nessus Is a Good Fit For
- Penetration testers and security consultants who run vulnerability assessments for clients
- SMB security administrators scanning their own IT infrastructure
- Developers and teams that need web application and external attack surface scanning, available in Nessus Expert
- Students, instructors and hobbyists using the free Nessus Essentials licence for non-commercial scanning
Why Teams Choose Nessus
- Run unlimited vulnerability assessments on one Professional or Expert licence rather than paying per scan
- Audit configurations against CIS Benchmarks, DISA STIGs, PCI DSS and other frameworks in the same tool
- Score vulnerabilities with CVSS v4, EPSS and Tenable's VPR, not CVSS alone
- Deploy the scanner on Windows, Linux, macOS or Raspberry Pi, wherever the assessment needs to happen
What You Gain with Nessus
Unlimited assessments
Nessus Professional and Nessus Expert licences cover unlimited vulnerability assessments rather than charging per scan target.
Pre-configured templates
More than 450 pre-configured templates help you set up scans for common systems and compliance checks quickly.
Multi-factor vulnerability scoring
Nessus scores findings with CVSS v4, EPSS and Tenable's VPR for the top 10 vulnerabilities, so triage does not rely on CVSS alone.
Live Results between scans
Live Results performs an offline vulnerability assessment with every plugin update, based on your last scan, without waiting for the next full scan.
Web app and external attack surface scanning
Nessus Expert adds web application scanning for custom code and third-party components, plus external attack surface scanning covering 5 domains per quarter.
Infrastructure-as-code scanning
Nessus Professional links to Terrascan so infrastructure-as-code can be scanned for misconfigurations before deployment.
Nessus: Supported Languages and Integrations
Supported Platforms
This list reflects Tenable's documented Nessus 10.12 install platforms (docs.tenable.com). It covers what the scanner itself runs on; edition differences such as IP limits, web application scanning and external attack surface scanning are separate and listed under pricing.
Integrations
Infrastructure as Code
Lists follow the vendor's published documentation as checked in September 2026. Support varies by version and edition, so ask us to confirm your exact stack.
Nessus Price, Licence Cost and Free Trial in India
Tenable prices Nessus Professional and Nessus Expert as single-licence subscriptions billed for 1, 2 or 3 years, with unlimited assessments included. Nessus Essentials is free for non-commercial use on a 30-day licence covering up to 5 IPs.
How Nessus Licensing Works
- Tenable publishes list prices for Nessus Professional on its own site, with 1-, 2- and 3-year terms
- Nessus Expert adds web application and external attack surface scanning to Professional, and is also listed with prices on Tenable's site
- Nessus Essentials is a free edition with a limited number of IP addresses
- Advanced Support and training add-ons are available for either edition
Get a Nessus Quotation or Trial
- Written price quotation for your team size, usually within 24 hours
- 14-day Nessus Professional or Expert trial licence arranged for your team
- Help with download, installation and your first scan
- Licences, renewals and support from one partner in India
Nessus: Pricing, Trial and Product Questions
Tenable publishes US list prices for Nessus Professional and Nessus Expert on its own pricing pages, with 1-, 2- and 3-year terms. Your price in India depends on the edition, term and number of scanners. Send us those details and SecOpsTool provides a written quotation, usually within 24 hours.
Use the form on this page and choose Price quotation. Tell us your team size and the modules or licence type you need, and SecOpsTool sends a written Nessus quotation, usually within 24 hours.
Tenable lets you register directly for a free, non-commercial Nessus Essentials licence (30 days, up to 5 IPs) or start a Nessus Professional trial on its own site, with Nessus Expert available as a 7-day upgrade from an active Professional licence. SecOpsTool arranges a 14-day Nessus trial licence for teams in India and helps with installation and the first scan.
Tenable names four: Nessus Essentials (free, non-commercial), Nessus Essentials Plus, Nessus Professional and Nessus Expert. Expert adds web application scanning and external attack surface scanning on top of Professional.
Tenable documents installation on Windows 10/11 and Windows Server 2012-2025, Linux distributions including Red Hat, CentOS, Ubuntu and Debian/Kali, macOS 14/15/26, and Raspberry Pi OS, for Nessus 10.12.
Tenable's integrations documentation lists those categories under Tenable Nessus Manager, Tenable Security Center and Tenable Vulnerability Management. For standalone Nessus Professional or Expert, the only integration Tenable documents is a link to Terrascan for infrastructure-as-code scanning.
Yes. Nessus Essentials is free for non-commercial use, with a 30-day licence covering up to 5 IPs. Nessus Essentials Plus adds a 20-IP limit and real-time plugin updates, free for verified students and instructors.
Get a Nessus Price Quote or 14-Day Free Trial
Evaluate Nessus on your own code for 14 days, with our engineers on hand. Our security engineers will onboard you and ensure you get maximum value from day one.
- 14-day trial licence arranged for your team
- Dedicated onboarding by certified security experts
- Integration support for your existing CI/CD pipeline
- Post-trial assessment report included
Request a Quote or Free Trial
Tell us what you need. We reply within 24 hours with your quotation or trial licence.