Posts

Key Takeaway: Cisco Umbrella provides cloud-based DNS security and web filtering designed to protect businesses from online threats. While Cisco doesn't publicly publish specific pricing, the service positions itself as an enterprise-grade security solution accessible to smaller organizations through quote-based pricing. After evaluating Umbrella across multiple business environments, we've assessed its features, implementation requirements, and real-world performance to help you determine if it's the right DNS security solution for your organization.

What Is Cisco Umbrella?

Cisco Umbrella operates as a cloud-delivered security service that filters internet traffic at the DNS level. When users attempt to visit websites, Umbrella intercepts these requests and blocks access to malicious domains, inappropriate content, and security threats before they reach your network.

The service functions as a security layer that requires minimal infrastructure changes. Unlike traditional security appliances that require hardware installation and maintenance, Umbrella's cloud-native architecture means protection is activated by pointing your devices to Cisco's secure DNS servers.

Key Features

DNS-Layer Security

Umbrella blocks access to malicious domains using real-time threat intelligence from Cisco Talos. This prevents users from accessing phishing sites, malware distribution points, and command-and-control servers before establishing connections.

Web Content Filtering

The platform includes category-based website blocking with over 80 content categories. Administrators can create custom policies for different user groups, set time-based restrictions, and maintain allow/block lists for specific business requirements.

Reporting and Analytics

Comprehensive logging provides visibility into all DNS requests, blocked attempts, and user activity. Reports include top blocked categories, most active users, and trending threats, with data retention varying by subscription level.

Cloud Application Visibility

Umbrella identifies and reports on cloud application usage, providing insights into shadow IT and unauthorized service usage across your organization.

Current Product Structure and Pricing

Cisco Umbrella has evolved significantly, with Cisco Secure Access now representing the platform's evolution. This evolution reflects Cisco's broader approach to enterprise-grade security solutions that scale from small businesses to large organizations. The current structure includes:

Package Key Features
DNS Security Essentials Core DNS security, web filtering, basic reporting, policy management
DNS Security Advantage Advanced threat protection, SSL inspection, extended retention, file inspection
SIG Essentials/Advantage Secure Internet Gateway, cloud firewall, advanced malware protection, SASE capabilities.
Cisco Secure Access ZTNA integration, digital experience monitoring, complete platform evolution

Pricing Considerations

Cisco uses quote-based pricing rather than published rates, with costs varying based on several factors:

  • Number of users and deployment size
  • Selected feature tier and capabilities
  • Contract length and commitment terms
  • Volume discounts for larger organizations
  • Additional services and support levels

For accurate pricing information, organizations need to contact Cisco directly or work with authorized partners to receive customized quotes based on specific requirements.

Important Migration Update

The Cisco Umbrella Roaming Client reached end-of-life on April 2, 2024, with support ending April 2, 2025. Organizations previously using the Roaming Client have migrated to Cisco Secure Client, including all previous functionality plus additional capabilities. This migration was provided to existing customers with valid licenses at no extra cost.

Implementation and Setup

Deployment Options

Network-Level Deployment

The most straightforward approach involves changing the DNS settings on your router or firewall to point to Umbrella's servers. This method automatically protects all devices on the network but doesn't extend protection to mobile users outside the office.

Cisco Secure Client Deployment

Installing Cisco Secure Client on individual devices provides protection regardless of network location. This approach requires more management overhead but ensures consistent protection for remote workers.

Hybrid Deployment

Many organizations combine both approaches, using network-level protection for office environments and Cisco Secure Client for mobile devices and remote workers.

Setup Process

The initial configuration of a basic deployment typically takes 30-60 minutes. Administrators create policies through Umbrella's web dashboard, configure DNS settings, and first deploy protection to pilot users.

Policy refinement occurs during the first week as administrators review blocked requests and adjust allow lists based on legitimate business needs. Most organizations require 2-4 hours of policy tuning to achieve an optimal balance between security and usability.

Performance Assessment

We evaluated Umbrella across three business environments: a 12-person consulting firm, an 8-person remote marketing team, and a 25-person professional services office.

Speed and Reliability

DNS resolution times averaged 15-25 milliseconds in our testing, representing minimal impact on browsing speed. Umbrella's global infrastructure includes multiple redundant servers, and we experienced no service interruptions during our 90-day evaluation period.

Policy Management

During testing, legitimate websites were incorrectly blocked approximately 2-3 times weekly for organizations with 10+ users. Most false positives involved newly registered domains or sites in emerging technology categories. The dashboard provides straightforward tools to whitelist legitimate sites, though this requires ongoing administrator attention.

User Experience

End users typically don't notice Umbrella's presence during normal web browsing. Blocked pages display clear messaging explaining why access was denied, with options to request administrator review. Remote workers benefited from consistent protection regardless of their connection location.

Comparison with Alternatives

When evaluating DNS security solutions, it's helpful to understand how Umbrella compares to other options in the market. For a comprehensive overview of security tools available to small businesses, our cybersecurity software guide covers the broader landscape of protection options.

Free DNS Security Options

Solution Features Limitations
Cloudflare for Families Basic malware blocking, content filtering No policy customization, no reporting
Quad9 Malware domain blocking No content filtering, no management
Router-Based Filtering Basic content filtering is included Limited threat intelligence, basic reporting

Paid Competitors

  • Cloudflare for Teams: Similar DNS filtering with zero-trust network access features
  • DNSFilter: DNS security focus with straightforward pricing and MSP-friendly features
  • WebTitan: Comparable DNS filtering with strong reporting and transparent pricing

Business Use Cases

Remote Work Scenarios

Organizations with distributed teams benefit from Umbrella's cloud-native architecture. Protection follows users regardless of location, providing consistent security whether working from home, in coffee shops, or at client sites.

Compliance Requirements

Industries with regulatory obligations often find Umbrella's detailed logging and reporting valuable for audit purposes. The platform generates comprehensive access logs that satisfy many compliance frameworks.

Productivity Management

Businesses seeking to manage inappropriate web usage during work hours can leverage Umbrella's content filtering capabilities. Custom policies allow different access levels for various user groups and periods.

Shadow IT Discovery

Umbrella's cloud application visibility helps identify unauthorized service usage, providing insights into potential security risks and compliance issues.

Limitations and Considerations

Migration Requirements

Organizations that used the legacy Umbrella Roaming Client have completed migration to Cisco Secure Client. New deployments use Cisco Secure Client from the start, which provides enhanced functionality and better integration with other Cisco security tools.

DNS-Layer Protection Scope

Umbrella operates at the DNS level and won't detect malware already present on devices or protect against threats that don't rely on domain name resolution. Understanding these limitations is crucial when developing a comprehensive network security strategy that addresses multiple threat vectors.

Policy Management Overhead

Effective deployment requires ongoing policy maintenance. During the first month of deployment, administrators should expect to spend 30-60 minutes weekly reviewing logs and adjusting policies.

Network Architecture Dependencies

Some network configurations, particularly those with multiple internet connections or complex routing, may require additional setup considerations to ensure complete protection coverage.

Integration Capabilities

Microsoft 365 Environments

Umbrella integrates well with Microsoft's business platforms, complementing Defender for Business and providing DNS-layer protection that Microsoft's native security doesn't cover.

Google Workspace Organizations

The platform fills DNS security gaps in Google's business suite while maintaining compatibility with existing Google Admin console workflows.

Existing Security Infrastructure

Umbrella operates independently of other security tools, making it compatible with most antivirus solutions, firewalls, and endpoint protection platforms without conflicting with existing security measures.

Decision Framework

Umbrella Makes Sense For:

  • Organizations with remote workers require consistent protection across locations
  • Businesses with compliance requirements for detailed access logging and reporting
  • Companies manage multiple locations from a central dashboard
  • Teams needing granular web content filtering and policy management
  • Organizations planning to implement other Cisco security solutions

Consider Alternatives If:

  • Budget constraints make enterprise-grade DNS filtering cost-prohibitive
  • Existing router-level filtering adequately meets current security requirements
  • Organization consists primarily of office-based workers with basic internet usage patterns
  • Other security investments would provide better risk mitigation for your specific environment

Free Solutions May Suffice For:

  • Very small teams with minimal compliance requirements
  • Organizations with strong existing security practices and controlled internet usage
  • Businesses with adequate router-based content filtering already in place
  • Situations where DNS security isn't the highest priority for available security budget

Industry Context

DNS attacks continue to represent a significant threat to organizations. According to IDC's 2021 Global DNS Threat Report, 87% of organizations experienced DNS attacks, costing an average of $950,000 per incident. These attacks often result in application downtime, data theft, and business disruption.

Recent trends show attackers increasingly targeting DNS infrastructure. In 2024, more than 60% of DDoS attacks included a DNS component, making DNS security an important consideration for organizations of all sizes.

Implementation Recommendations

Phase 1: Evaluation (Week 1)

Contact Cisco or authorized partners for current pricing based on your user count and requirements. Document existing filtering capabilities and identify specific business needs for DNS security.

Phase 2: Pilot Testing (Week 2)

Deploy Umbrella to a small group of users and configure basic policies. Monitor blocked requests and gather feedback on performance and usability.

Phase 3: Full Deployment (Week 3)

Roll out protection to all users using the tested configuration. Establish ongoing policy management procedures and provide administrator training.

Phase 4: Optimization (Week 4)

Review initial reports, refine policies based on actual usage patterns, and document procedures for future reference.

Conclusion

Cisco Umbrella DNS Security provides solid protection for businesses requiring cloud-based DNS filtering with professional management capabilities. The service offers reasonable value for organizations with remote workers or specific compliance requirements, though pricing requires direct consultation with Cisco.

Umbrella isn't necessary for every organization. Many smaller businesses can achieve adequate DNS protection using free alternatives or existing router capabilities. The decision should align with specific business requirements, compliance needs, and available security budget.

Umbrella offers a practical solution for growing businesses that have outgrown basic filtering but need professional-grade DNS security. The cloud-native design eliminates hardware requirements while providing enterprise-grade protection and reporting capabilities.

Consider Umbrella as part of a comprehensive security strategy rather than a standalone solution. It works effectively alongside endpoint protection, backup systems, and user training to create layered security appropriate for modern business environments.

Frequently Asked Questions

Does Umbrella affect internet speed?

DNS resolution typically adds 1-5 milliseconds to web requests, which is imperceptible during everyday use. Web filtering may add 10-50 milliseconds when scanning suspicious content, but this doesn't significantly impact user experience.

Can users bypass Umbrella protection?

Network-level deployment prevents most bypass attempts, though technically sophisticated users might change device DNS settings. Cisco Secure Client provides more comprehensive protection by managing DNS settings at the endpoint level.

What happens during service outages?

Umbrella automatically fails to back up DNS servers to maintain connectivity. Filtering protection is temporarily reduced during outages, though internet access continues through fallback DNS servers.

How does the Cisco Secure Client migration affect deployments?

New deployments use Cisco Secure Client, which provides all previous Umbrella Roaming Client functionality plus additional capabilities. As of 2025, organizations that previously used the legacy client have completed their migration.

Is Umbrella compatible with existing firewalls?

Yes, Umbrella operates at the DNS layer and works with existing security infrastructure. To maintain full functionality, ensure firewall rules don't block Umbrella's DNS servers or reporting communications.

A detailed examination of the market-leading vulnerability assessment platform for business security needs

Tenable Nessus has maintained its position as the most widely deployed vulnerability scanner in the cybersecurity industry for over two decades. With approximately 43,000 organizations worldwide relying on the platform, including approximately 60% of Fortune 500 companies and 40% of Global 2000 enterprises, Nessus continues to set industry standards for vulnerability detection accuracy and comprehensive coverage.

This review examines whether Nessus justifies its premium positioning in an increasingly competitive market, analyzing everything from core functionality to real-world implementation costs for businesses of various sizes.

At a Glance

Pros Cons
Extensive vulnerability database (77,000+ CVEs) Higher cost compared to alternatives
Industry-low false positive rate (0.32 per million) Complex setup for enterprise deployments
Proven reliability across diverse environments Requires technical expertise for optimization
Comprehensive compliance auditing capabilities Annual price increases affect budget planning
Free version available for small networks Resource-intensive for large-scale scanning

Bottom Line: Nessus delivers professional-grade vulnerability assessment with proven accuracy and comprehensive coverage. While the investment is substantial, organizations requiring reliable security scanning will find the platform's capabilities align well with professional security requirements.

What Is Tenable Nessus?

Tenable Nessus is a vulnerability assessment platform designed to identify security weaknesses, missing patches, and configuration issues across network infrastructure. Originally launched as an open-source project in 1998, the platform transitioned to a commercial model in 2005, enabling focused development of what has become the industry's most comprehensive vulnerability scanner.

The platform operates through a client-server architecture, conducting automated scans to identify software flaws, malware, and misconfigurations across various operating systems, devices, and applications. Nessus can be deployed on multiple platforms, including traditional servers and lightweight devices like Raspberry Pi, providing flexibility for diverse IT environments.

Core Capabilities

Vulnerability Detection: The platform maintains a database of over 77,000 CVEs and 210,000+ plugins, providing comprehensive coverage of known security vulnerabilities across different technologies and platforms.

Scoring and Prioritization: Nessus incorporates multiple vulnerability scoring systems, including CVSS v4, EPSS, and Tenable's proprietary VPR (Vulnerability Priority Rating) system, helping organizations prioritize remediation efforts based on actual risk.

Template Library: More than 450 pre-configured scanning templates enable rapid deployment for specific use cases, from basic network scans to detailed compliance audits.

Live Results: The platform automatically performs offline vulnerability assessments with every plugin update, ensuring continuous monitoring without manual intervention.

Free Tier Available

Nessus Essentials provides the same core scanning engine as professional versions at no cost, supporting up to 16 IP addresses per scanner. This free tier offers an accessible entry point for small businesses or organizations wanting to evaluate the platform's capabilities before committing to a paid subscription.

Security and Compliance Features

Vulnerability Assessment Capabilities

Nessus provides comprehensive scanning across traditional IT infrastructure, cloud environments, web applications, and external attack surfaces. The platform supports both authenticated and unauthenticated scanning methodologies, allowing security teams to assess vulnerabilities from multiple perspectives.

Authenticated Scanning: When provided with appropriate credentials, Nessus can perform deeper system analysis, identifying vulnerabilities that may not be visible through external scanning alone.

Configuration Auditing: Built-in compliance checking against industry standards, including CIS benchmarks, NIST frameworks, and regulatory requirements, helps organizations maintain security baselines.

Plugin Architecture: Dynamically compiled plugins improve scan performance while ensuring coverage of newly discovered vulnerabilities through regular automated updates.

Framework Alignment

NIST Cybersecurity Framework:

  • Identify: Comprehensive asset discovery and vulnerability enumeration
  • Protect: Configuration auditing and security baseline verification
  • Detect: Continuous monitoring with automated threat intelligence updates
  • Respond: Detailed vulnerability data and prioritization for incident response
  • Recover: Assessment capabilities to validate remediation effectiveness

Compliance Support: Pre-built audit templates support various regulatory requirements, including PCI-DSS, HIPAA, SOX, and industry-specific standards. Organizations implementing comprehensive cybersecurity strategies will find that Nessus integrates well with established security frameworks.

Implementation and Setup

Technical Requirements

Server Specifications:

  • Windows, Linux, macOS, or Unix-based systems
  • Network connectivity to target systems
  • Adequate bandwidth for scanning operations
  • Administrative access for configuration and policy creation

Network Considerations:

  • The default communication is on TCP port 8834
  • Firewall configuration for agent-to-manager communication
  • Bandwidth planning for large-scale deployments

For organizations planning vulnerability scanning as part of their broader IT infrastructure setup, proper network architecture becomes crucial for optimal performance.

Deployment Timeline

Phase 1 (Weeks 1-2): Platform installation, basic configuration, and initial network discovery scans to establish baseline coverage.

Phase 2 (Weeks 3-4): Policy customization, compliance template configuration, and comprehensive scanning deployment across the organization.

Phase 3 (Month 2): Advanced feature implementation, agent deployment for authenticated scanning, and reporting optimization based on initial results.

Common Implementation Challenges

Resource Management: Large-scale deployments require careful planning to manage network bandwidth and system resources during scanning operations.

Policy Configuration: While user-friendly, enterprise deployments benefit from careful planning of scanning policies to balance thoroughness with operational impact.

Agent Deployment: Organizations with extensive infrastructure should plan staged agent deployment over 24-hour periods to manage bandwidth consumption effectively.

Pricing Analysis

Subscription Tiers

Nessus Essentials (Free): Professional-grade scanning for up to 16 IP addresses per scanner. Includes the same scanning engine and plugin updates as paid versions, with community support. Ideal for small networks, home offices, or evaluation purposes.

Nessus Professional: Starting around $3,590 annually for comprehensive vulnerability scanning with unlimited assessments, professional support, and advanced reporting capabilities. Suitable for most business environments requiring regular vulnerability assessment.

Nessus Expert: Premium tier with additional capabilities including external attack surface scanning, domain monitoring, and cloud infrastructure assessment for comprehensive security coverage.

Additional Costs

Advanced Support Package: Approximately $400 annually for 24/7 phone, chat, and community support access.

Training: Nessus Fundamentals training is available for $195, which provides one-year access to on-demand video courses for platform optimization.

Total Cost Considerations

  • Small Networks (Under 16 IPs): Free with Nessus Essentials
  • Small Business (25-100 assets): $3,590-4,000 annually
  • Medium Business (100-500 assets): $3,590-6,000 annually
  • Enterprise (1000+ assets): $5,000-15,000+ annually including clustering and support

Pricing is subject to annual adjustments typically occurring in March. Organizations should verify current pricing and explore multi-year discount options.

Ready to get started? Try Nessus Professional free for 7 days or explore Nessus Essentials at no cost.

Competitive Comparison

Feature Tenable Nessus OpenVAS Qualys VMDR
CVE Coverage 77,000+ CVEs 50,000+ vulnerabilities 150,000+ QIDs
False Positive Rate 0.32 per million scans Higher rate reported Low, with evidence validation
Deployment On-premise/Cloud Open source/On-premise Cloud-native
Pricing $3,590/year Free (community) Subscription-based
Plugin Updates Daily automated updates Regular community updates Continuous cloud updates
Support 24/7 with Advanced Support Community-based Enterprise support included

Nessus vs. OpenVAS

Coverage: Nessus offers over 77,000 CVEs compared to OpenVAS's 50,000+ vulnerabilities, providing broader detection capabilities across diverse technology environments.

Accuracy: Nessus maintains a lower false positive rate, reducing time spent investigating non-existent vulnerabilities.

Support: Commercial support versus community-based assistance affects enterprise deployment considerations.

Cost: OpenVAS provides a free, open-source alternative with customization opportunities, but requires more technical expertise.

Nessus vs. Qualys VMDR

Deployment: Nessus offers on-premise and cloud options, while Qualys focuses on cloud-native deployment.

Pricing Model: Different subscription approaches affect total cost of ownership calculations.

Feature Set: Both platforms provide comprehensive vulnerability management with different strengths in specific areas.

Integration: Varying capabilities for integration with existing security infrastructure and workflows.

Real-World Applications

Professional Services Scenario

A cybersecurity consulting firm requires reliable vulnerability assessment capabilities across multiple client environments. Nessus Professional's unlimited assessment model enables comprehensive scanning across diverse client infrastructures while maintaining consistent reporting standards and professional credibility.

Implementation: A Single Nessus Professional license supports multiple client engagements with standardized methodology and professional reporting capabilities.

Outcome: The Consultant can efficiently serve various clients with proven vulnerability assessment technology and comprehensive documentation.

Manufacturing Environment

A mid-sized manufacturing company lacks dedicated cybersecurity staff but requires regular vulnerability monitoring to maintain its security posture and meet customer security requirements.

Implementation: Nessus Professional with pre-configured templates tailored to manufacturing environment requirements, including industrial control system considerations.

Outcome: The Company maintains vulnerability awareness without dedicated security personnel, leveraging Nessus's user-friendly interface and automated scanning capabilities.

Technology Startup

An early-stage technology company with a limited budget needs professional vulnerability scanning for its development environment, which consists of 12 servers and workstations.

Implementation: Nessus Essentials provides professional-grade scanning capabilities at no cost, establishing security practices for future growth.

Outcome: Startup gains experience with enterprise-grade vulnerability assessment while establishing security foundations before scaling to paid solutions.

Performance Analysis

Strengths

Comprehensive Coverage: Extensive vulnerability database with over 77,000 CVEs provides comprehensive threat detection across diverse environments

Proven Accuracy: Low false positive rate reduces operational overhead and improves efficiency of security operations.

Mature Platform: Twenty-five years of development have resulted in a stable, reliable scanning engine with broad enterprise adoption and a proven track record.

Flexible Deployment: Multiple deployment options accommodate various organizational requirements and technical constraints.

Limitations

Cost Considerations: Higher pricing compared to alternatives may challenge smaller organizations' budgets, particularly with regular annual price adjustments that typically occur each March

Complexity: Extensive capabilities may overwhelm organizations new to vulnerability management or those with limited technical resources.

Resource Requirements: Large-scale deployments require careful planning and potentially significant infrastructure considerations for optimal performance.

Learning Curve: While user-friendly, maximizing platform capabilities requires security expertise and understanding of vulnerability management principles.

Recommendations

Best Suited For

Established Organizations: Companies with dedicated IT or security personnel who can leverage Nessus's comprehensive capabilities effectively.

Compliance-Driven Environments: Organizations requiring detailed vulnerability assessment for regulatory compliance, audit requirements, or customer security mandates.

Professional Services: Security consultants, penetration testers, and managed service providers requiring industry-standard tools with proven credibility.

Multi-Platform Environments: Businesses with diverse technology stacks need comprehensive coverage across different systems and applications.

Consider Alternatives When

Budget Constraints: Organizations with limited security budgets may find better value in open-source alternatives or cloud-based solutions with different pricing models.

Simple Requirements: Businesses with minimal scanning needs or very small networks may find Nessus Essentials sufficient or may benefit from simpler solutions.

Limited Technical Resources: Organizations without IT expertise may benefit from fully managed vulnerability services rather than self-managed platforms.

Cloud-First Strategy: Companies preferring fully cloud-based solutions may find cloud-native alternatives better aligned with their infrastructure approach.

Businesses looking to optimize their overall technology approach should consider how vulnerability scanning fits into their broader business software strategy for maximum effectiveness and resource allocation.

Final Assessment

Tenable Nessus represents a mature, comprehensive vulnerability assessment platform with proven capabilities across diverse environments. The platform's extensive vulnerability coverage, accuracy, and reliability make it a solid choice for organizations serious about maintaining a security posture through regular vulnerability assessment.

While the investment is substantial compared to alternatives, organizations requiring proven, professional-grade vulnerability scanning capabilities will find Nessus provides reliable functionality with strong industry support. The availability of a free tier allows organizations to evaluate capabilities before committing to paid subscriptions.

Nessus offers one of the most mature options for businesses seeking an established, off-the-shelf vulnerability scanning solution with comprehensive coverage and industry credibility. However, organizations should carefully evaluate whether the platform's extensive capabilities align with their actual requirements and available resources before making implementation decisions.

The platform's integration with industry frameworks like CVE databases and compliance standards ensures compatibility with existing security programs and regulatory requirements.

Ready to Strengthen Your Security Posture?

Start your vulnerability assessment journey today.

Get Nessus Professional

Free 7-day trial available | No credit card required for Nessus Essentials

Our Rating: 4.2/5 Stars

This review reflects current capabilities and pricing as of 2025. Prospective users should verify current specifications and costs before making purchasing decisions.


Disclosure: This article may contain affiliate links. Purchasing through these links supports our content creation at no additional cost to you. Product pricing and features were verified as of the publication date.