description Tenable Nessus Overview
Tenable Nessus is the industry standard for vulnerability assessment. It is an essential tool for IT administrators and security professionals to identify misconfigurations, missing patches, and vulnerabilities across their network. With the largest library of vulnerability plugins in the industry, Nessus provides deep, accurate scanning capabilities. It is widely used for compliance auditing and ensuring that systems meet security benchmarks like CIS or HIPAA.
While it is not an active 'protection' tool, it is the foundation upon which a secure environment is built.
info Tenable Nessus Specifications
| Product Type | Vulnerability Assessment Scanner |
| Scan Targets | Network Devices, Endpoints, Cloud Workloads, Containers, Web Applications |
| Report Formats | HTML, PDF, CSV, Nessus XML, DBG |
| Integration Apis | REST API, SOAP API, SIEM Integration |
| Deployment Models | On-Premises, Cloud, Hybrid |
| Protocols Scanned | TCP, UDP, ICMP, SNMP, HTTP/HTTPS |
| Compliance Policies | PCI-DSS, HIPAA, NIST, CIS Benchmarks, GDPR |
| Plugin Library Size | 140,000+ Vulnerability Checks |
| Supported Platforms | Windows, Linux, macOS |
| Authentication Support | Agent-Based, Agentless |
balance Tenable Nessus Pros & Cons
- Industry-leading vulnerability plugin library with 140,000+ checks for comprehensive threat coverage
- Trusted by millions of security professionals and widely recognized in the cybersecurity industry
- Supports cross-platform deployment across Windows, Linux, and macOS environments
- Regular plugin updates ensure protection against newly discovered vulnerabilities
- Detailed reporting and remediation guidance accelerate vulnerability remediation workflows
- Integrates with SIEM systems and supports REST API for automation and orchestration
- Can be resource-intensive when scanning large enterprise networks
- Full professional features require paid subscription which may be costly for smaller teams
- Steep learning curve for novice users unfamiliar with vulnerability assessment concepts
- Tends to generate false positives requiring manual verification and triage
- Advanced features like continuous monitoring require additional Tenable products
help Tenable Nessus FAQ
What is Tenable Nessus and what is it used for?
Tenable Nessus is a vulnerability assessment solution used by security professionals to identify security weaknesses, misconfigurations, and missing patches across network infrastructure, endpoints, and cloud environments before attackers can exploit them.
Is there a free version of Tenable Nessus?
Yes, Tenable offers Nessus Essentials, a free version limited to scanning up to 16 IP addresses with a subset of vulnerability plugins. It is ideal for students and small home network scanning.
How much does the professional version of Nessus cost?
Nessus Professional is available through annual subscription. Pricing is based on the number of scanners and targets. Contact Tenable for enterprise pricing as costs vary by organization size and deployment requirements.
What types of vulnerabilities can Nessus detect?
Nessus detects missing patches, misconfigurations, malware, SSL/TLS issues, compliance violations, denial of service vulnerabilities, and credential-based checks across network devices, operating systems, databases, and web applications.
How often does Tenable update Nessus plugins?
Tenable releases new vulnerability plugins multiple times per week through its plugin feed. Professional subscribers receive priority access to new plugins, while the free Essentials version updates with a slight delay.
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What are the key specifications of Tenable Nessus?
- Product Type: Vulnerability Assessment Scanner
- Scan Targets: Network Devices, Endpoints, Cloud Workloads, Containers, Web Applications
- Report Formats: HTML, PDF, CSV, Nessus XML, DBG
- Integration APIs: REST API, SOAP API, SIEM Integration
- Deployment Models: On-Premises, Cloud, Hybrid
- Protocols Scanned: TCP, UDP, ICMP, SNMP, HTTP/HTTPS
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