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Nessus

Information Technology > Network monitoring

Description

Nessus is a widely-used vulnerability assessment tool designed to help organizations identify and manage security risks within their IT infrastructure. It scans systems, networks, and applications for vulnerabilities, misconfigurations, and compliance issues, providing detailed reports that prioritize risks and suggest remediation steps. With features like customizable scan policies, integration with other security tools, and advanced reporting capabilities, Nessus enables users to proactively secure their environments. Whether you're performing basic scans or conducting in-depth security assessments, Nessus offers a comprehensive solution for maintaining robust cybersecurity defenses. Its user-friendly interface and extensive documentation make it accessible for both beginners and experienced security professionals.

Expected Behaviors

LEVEL 1

Fundamental Awareness

At the fundamental awareness level, individuals are expected to understand the basic interface and navigation of Nessus, perform basic installation and setup, create and manage user accounts, run basic vulnerability scans, and interpret basic scan results.

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LEVEL 2

Novice

Novices should be able to configure scan policies, schedule scans, use Nessus templates for different scan types, export scan results in various formats, and troubleshoot common issues.

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LEVEL 3

Intermediate

Intermediate users are expected to customize scan policies for specific environments, integrate Nessus with other security tools, analyze scan results for false positives, create custom plugins, and perform credentialed scans.

LEVEL 4

Advanced

Advanced users should be proficient in advanced scan configuration and optimization, automating scans using scripts and APIs, conducting compliance checks, developing and maintaining a scanning strategy, and performing advanced troubleshooting and performance tuning.

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LEVEL 5

Expert

Experts are expected to design and implement enterprise-wide Nessus deployments, develop custom reporting and dashboards, integrate Nessus with SIEM solutions, conduct advanced threat hunting, and train and mentor others on best practices.

Micro Skills

LEVEL 1

Fundamental Awareness

Identifying main dashboard components
Navigating through different tabs and sections
Understanding the purpose of each menu item
Locating help and support resources within the interface
Downloading Nessus installer from the official website
Running the installer on supported operating systems
Completing initial configuration steps
Activating Nessus with a valid license key
Accessing the user management section
Adding new user accounts
Assigning roles and permissions to users
Editing and deleting existing user accounts
Selecting a scan template
Configuring target IP addresses or ranges
Starting the scan
Monitoring scan progress
Accessing completed scan reports
Understanding the severity levels of vulnerabilities
Reviewing detailed vulnerability descriptions
Identifying affected hosts and services
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LEVEL 2

Novice

Selecting appropriate scan templates
Adjusting scan settings for performance
Setting up scan exclusions
Configuring scan credentials
Saving and reusing scan policies
Setting up one-time scans
Configuring recurring scans
Managing scan schedules
Adjusting scan windows to minimize impact
Notifying stakeholders of scheduled scans
Understanding different scan templates
Selecting the right template for the task
Customizing templates for specific needs
Saving customized templates
Sharing templates with team members
Choosing export formats (PDF, CSV, etc.)
Customizing report content
Automating report exports
Securing exported reports
Distributing reports to stakeholders
Identifying common error messages
Checking network connectivity
Verifying scan configurations
Consulting Nessus documentation
Contacting support for unresolved issues
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LEVEL 3

Intermediate

Identifying environment-specific vulnerabilities
Adjusting scan settings for performance optimization
Configuring scan exclusions and inclusions
Setting up environment-specific credentials
Testing and validating customized scan policies
Understanding API integration capabilities
Configuring API keys and access permissions
Setting up data export to SIEM solutions
Automating data import from other security tools
Monitoring and troubleshooting integration issues
Identifying common false positive indicators
Cross-referencing scan results with other data sources
Using manual verification techniques
Documenting and reporting false positives
Updating scan policies to reduce false positives
Understanding the Nessus plugin architecture
Writing scripts in Nessus-supported languages
Testing and debugging custom plugins
Deploying custom plugins in Nessus
Maintaining and updating custom plugins
Setting up and managing credentials securely
Configuring Nessus to use credentials during scans
Validating credentialed scan results
Troubleshooting credential-related issues
Optimizing credentialed scan performance
LEVEL 4

Advanced

Configuring scan exclusions
Tuning scan sensitivity
Optimizing scan schedules to minimize network impact
Utilizing advanced scan options
Writing scripts to automate scan initiation
Using Nessus REST API for scan management
Scheduling automated scans via cron jobs
Parsing and processing scan results programmatically
Integrating automated scans into CI/CD pipelines
Configuring compliance scan policies
Interpreting compliance scan results
Mapping compliance results to regulatory requirements
Generating compliance reports
Customizing compliance checks
Assessing organizational scanning needs
Defining scanning objectives and goals
Creating a scanning schedule
Documenting scanning procedures
Reviewing and updating the scanning strategy regularly
Diagnosing scan failures
Resolving connectivity issues
Analyzing scan logs for errors
Improving scan performance through configuration changes
Engaging with Nessus support for complex issues
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LEVEL 5

Expert

Assessing organizational needs and requirements
Planning deployment architecture
Configuring Nessus Manager and Agents
Ensuring network compatibility and security
Testing and validating deployment
Identifying key metrics and KPIs
Using Nessus API for data extraction
Creating custom report templates
Integrating with third-party visualization tools
Automating report generation and distribution
Understanding SIEM integration requirements
Configuring Nessus to send data to SIEM
Mapping Nessus data fields to SIEM
Setting up alerts and notifications in SIEM
Validating and troubleshooting integration
Identifying advanced threat indicators
Configuring scans for specific threat detection
Analyzing scan results for threat patterns
Correlating Nessus data with other threat intelligence
Documenting and reporting findings
Developing training materials and resources
Conducting hands-on training sessions
Providing ongoing support and guidance
Evaluating trainee progress and feedback
Updating training content based on new features and updates

Skill Overview

  • Expert2 years experience
  • Micro-skills119
  • Roles requiring skill2

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