OPNsense vs Palo Alto Networks CN-Series comparison

OPNsense and Palo Alto Networks are both solutions in the Firewalls category. OPNsense is ranked #4 with an average rating of 8.2, while Palo Alto Networks is ranked #35 with an average rating of 9.5. OPNsense holds a 10.3% mindshare in Firewalls, compared to Palo Alto Networks’s 0.2% mindshare. Additionally, 95% of OPNsense users are willing to recommend the solution, compared to 100% of Palo Alto Networks users who would recommend it.

Comparison Buyer's Guide

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Executive Summary

We performed a comparison between OPNsense and Palo Alto Networks CN-Series based on real PeerSpot user reviews.

Find out in this report how the two Firewalls solutions compare in terms of features, pricing, service and support, easy of deployment, and ROI.

To learn more, read our detailed OPNsense vs. Palo Alto Networks CN-Series Report (Updated: March 2026).

Buyer's Guide

OPNsense vs. Palo Alto Networks CN-Series

March 2026

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Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:

Categories and Ranking

Fortinet FortiGate

Mindshare comparison

As of March 2026, in the Firewalls category, the mindshare of Fortinet FortiGate is 18.3%, down from 21.1% compared to the previous year. The mindshare of OPNsense is 10.3%, down from 12.1% compared to the previous year. The mindshare of Palo Alto Networks CN-Series is 0.2%, up from 0.0% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Firewalls Mindshare Distribution
Product	Mindshare (%)
Fortinet FortiGate	18.3%
OPNsense	10.3%
Palo Alto Networks CN-Series	0.2%
Other	71.2%

Firewalls

Featured Reviews

Vasu Gala

Manager, Information Technology Operation/Presales at TechMonarch

A stable solution with an intuitive interface and quick customer service

I have been working with Fortinet FortiGate, WatchGuard, Sophos, and SonicWall. I'm not as comfortable with SonicWall because of their UI and limitations. I prefer Fortinet above all other options. When it comes to configuration, I am confident in my ability to handle various tasks, including creating policies such as firewall rules, web policies, and application policies. Additionally, I can configure VPNs and implement load balancing, among other tasks. Overall, I feel much more comfortable working with Fortinet. Fortinet has made significant improvements by integrating AI with firewalls for threat analysis and prevention. In the past 2-3 years, they have launched FortiSASE and SIEM, and they also provide SOC services. Both Palo Alto and Fortinet FortiGate are excellent. While Fortinet FortiGate comes at higher prices, the functionality and support justify the cost. They promptly resolve firmware issues and inform all support providers about configuration changes.

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Moutaz Sheikh Alard

ISO 27001 Lead Implementer at a consultancy with 11-50 employees

Has helped simulate enterprise security setups and strengthens network segmentation practices

For my capstone, I use OPNsense for my project and its broader benefits for enterprise and cybersecurity context. OPNsense is an open source based firewall and routing platform. It offers enterprise-grade features such as intrusion detection and prevention system, VPN support, traffic shaping, and web filtering, all without license cost. This platform has a modular design, a clean web-based GUI, and frequent updates that prioritize security and usability. It competes with commercial firewalls such as Cisco ASA, FortiGate, and Palo Alto, but stands out because it's community-driven, cost-effective, and transparent. I find OPNsense's feature of acting as a central firewall and gateway most valuable, providing robust point segmentation between the internal network and DMZs in my capstone project, intrusion detection to monitor malicious traffic, VPN services for secure remote access, and logging and monitoring for compliance and auditing. This allows me to simulate a real-world enterprise environment on a smaller scale, demonstrating both security hardening and network efficiency. OPNsense impacts my projects and home network positively because its cost-effectiveness is perfect for lab and enterprise setup without expensive licensing. The flexibility, easy VLAN and DMZ configuration supports different zones such as web servers, mail servers, and log servers. The security-first design for IDS/IPS integration helps me showcase modern defense-in-depth strategies. The user-friendly management through the web GUI makes it possible to manage complex firewall rules clearly, which is critical when documenting and presenting a capstone. Scalability is also an advantage. Although my project is lab-based, OPNsense can scale into production deployments in SMBs and enterprise.

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Ahmed_Shalaby

Senior Cyber Security Engineer at Beta Information Technology

Application control excels and integration with monitoring system boosts efficiency

I am an integrator working with Palo Alto Networks CN-Series and Panorama. I have been involved with the implementation of Palo Alto Networks CN-Series The stability of Palo Alto Networks CN-Series is excellent. Application control is one of the most valuable features. Its monitoring capability…

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Quotes from Members

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:

Pros

"Using this product makes the VPN seamless and almost invisible to me in the sense that I don't have to think about it."

"The SD-WAN feature is the most valuable. This feature evolved from link load balancing. It has helped us in terms of our uptime and privatizing applications whenever we experience an outage. The SD-WAN feature has been a plus for us. Two-factor authentication has allowed us to add more users in terms of remote working. We have two-factor authentication for remote workers to authenticate them before they get on the network."

"The interest of the Fortinet FortiGate appliance is the ability to manage quickly and easily the different functionalities."

"Fortinet FortiGate helps improve my organization since it's quick and easy to install, and we don't have to call support frequently."

"It is easy to manage, and it doesn't need much knowledge from the team; it is a stable device, and there are many features that are included out of the box."

"Security management tool that's easy to integrate and easy to work with. No issues found with its stability and scalability."

"Previously, my organization had the Checkpoint firewall solution, which has been replaced by the Fortinet Fortigate solution, which is cost effective and more manageable from a beginner's perspective."

"Fortinet FortiGate is a scalable solution."

More Fortinet FortiGate pros

"The DNS-level filtering is impressive for thwarting time scanners."

"It's more secure and more reliable."

"It has an open license, it works very well, and there is an update every month."

"It has an open license. It works very well, and there is an update every month."

"The technical support is very good."

"I find the solution to be user-friendly, with a lot of reports and easy settings."

"The most valuable features are reporting, the Sensei plugin, and firewall capabilities."

"The most valuable feature is the Dual WAN in OPNSense, which offers advanced capabilities."

More OPNsense pros

"The app inspection is very helpful for network security."

"The stability of Palo Alto Networks CN-Series is excellent."

Cons

"FortiGate support could do some improvements on their IPv6 configuration. Right now it's still in the very early stage for utilizing in an enterprise level network environment."

"The cloud features and integration could be improved."

"The integration with third-party tools may be something that they should work on."

"One area for improvement is the performance on bandwidth demands for smaller devices, as well as better web filtering."

"The product's data guard feature should support a USB port when the internet connection is unavailable."

"The solution has many heightened points which we cannot get to without working on CLI."

"They are doing good, but they can improve the distributor assignment. The availability of the product and the timeline of delivery are the main things. The distribution should be swift, and the distributor should not reach out to end customers directly. They should work as a distributor. There should also be one more local distributor. Currently, there is only one distributor in Pakistan, and the rest of them are in UAE. It is difficult to work with only one distributor. Sometimes, you don't get along with the same distributor, and that's why they should have one more distributor. Their licensing should also be improved. The activation or renewal of the product should be done from the date of renewal, not from the date on which the license expired."

"Fortinet should focus on enhancing the capabilities of FortiGate by consolidating its various products, such as FortiGate Cloud, FortiManager, and FortiAnalyzer."

More Fortinet FortiGate cons

"Given that OPNsense plays a pivotal role as a firewall, safeguarding against various threats, having a reliable backup ensures uninterrupted protection even if unforeseen events impact the primary virtual machine."

"The ability to set the VPN IP address would be a welcome addition."

"The solution can't compete with next-generation firewalls."

"I would like better documentation concerning the provided packages and their integration."

"FortiGate is a better firewall but that is commercial software that you have to buy a license for."

"In our experience, OPNsense showed me some problems when using it in different environments. The problem is integration with a virtual server."

"The solution could be more secure."

"We did not like the fact that you have to configure everything with the graphic user interface. We have used other firewalls, such as FortiGate, that you can configure via code."

More OPNsense cons

"Palo Alto Networks CN-Series could improve on its pricing as it is quite expensive."

"I'd like to see more IOPs features."

Pricing and Cost Advice

"In my opinion, the pricing of the product is reasonable."

"The price of Fortinet FortiGate is the lowest in the market."

"It was pretty affordable. We did go a little bit above MSRP, but the service pack that was included was quite worth the additional costs. It is competitively priced compared to other major players in the market. It is significantly cheaper than Check Point, which is a primary competitor. Additionally, its pricing is comparable to that of Cisco's ASA and a few other vendors."

"The price is high compared to some of the other solutions."

"Compared to Palo Alto, which we have used in the past, pricing and licensing are okay."

"The price of FortiGate is good."

"The pricing is very reasonable."

"We are currently evaluating a Palo Alto solution, and the pricing could be a reason for going for Palo Alto."

More Fortinet FortiGate pricing and cost advice

"It is not an expensive product. Basically, I deployed it because it was the fastest solution to satisfy our needs in open source."

"It's a free solution."

"It's not expensive."

"OPNsense is an open-source solution and it is free to use."

"I'm using the free version of OPNsense. I didn't check the pricing for the solution because I still need to test it before getting the approval to purchase OPNsense, and it isn't easy to get approval from the higher-ups."

"OPNsense is a well known open-source tool."

"I would rate the pricing three out of ten."

"The price of OPNsense is good."

More OPNsense pricing and cost advice

Information not available

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Top Industries

By visitors reading reviews

Computer Software Company

11%

Comms Service Provider

Manufacturing Company

Financial Services Firm

Comms Service Provider

18%

Computer Software Company

11%

Manufacturing Company

Financial Services Firm

No data available

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	363
Midsize Enterprise	135
Large Enterprise	190

By reviewers
Company Size	Count
Small Business	31
Midsize Enterprise	6
Large Enterprise	8

No data available

Questions from the Community

Which is the better NGFW: Fortinet Fortigate or Cisco Firepower?

When you compare these firewalls you can identify them with different features, advantages, practices and usage a...

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What is the biggest difference between Sophos XG and FortiGate?

From my experience regarding both the Sophos and FortiGate firewalls, I personally would rather use FortiGate. I know...

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What are the biggest technical differences between Sophos UTM and Fortinet FortiGate?

As a solution, Sophos UTM offers a lot of functionality, it scales well, and the stability and performance are quite ...

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What is the difference between PfSense and OPNsense?

Two of the most common and well recognized firewalls, PfSense and OPNsense both support site-to-site IPsec VPN and cl...

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What do you like most about OPNsense?

What I like the most about OPNsense is that it offers an easy-to-use dashboard for device management and control.

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What is your experience regarding pricing and costs for OPNsense?

Setup cost is almost zero as one can simulate the whole environment using open source version. Pricing seems fair eno...

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What is your experience regarding pricing and costs for Palo Alto Networks CN-Series?

The pricing of Palo Alto Networks CN-Series is quite expensive, rating around eight on a scale of one to ten for cost.

See all answers

What needs improvement with Palo Alto Networks CN-Series?

Palo Alto Networks CN-Series could improve on its pricing as it is quite expensive. The SD-WAN implementation using P...

See all answers

What is your primary use case for Palo Alto Networks CN-Series?

I am an integrator working with Palo Alto Networks CN-Series ( /products/palo-alto-networks-cn-series-reviews ) and P...

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Comparisons

Sophos Firewall vs Fortinet FortiGate

Compared 19% of the time

Cisco Secure Firewall vs Fortinet FortiGate

Compared 13% of the time

Netgate pfSense vs Fortinet FortiGate

Compared 4% of the time

Palo Alto Networks NG Firewalls vs Fortinet FortiGate

Compared 4% of the time

Check Point Quantum Force (NGFW) vs Fortinet FortiGate

Compared 3% of the time

More Fortinet FortiGate Competitors

Netgate pfSense vs OPNsense

Compared 51% of the time

IPFire vs OPNsense

Compared 8% of the time

Sophos Firewall vs OPNsense

Compared 7% of the time

Sophos UTM vs OPNsense

Compared 3% of the time

Untangle NG Firewall vs OPNsense

Compared 2% of the time

More OPNsense Competitors

Palo Alto Networks VM-Series vs Palo Alto Networks CN-Series

Compared 27% of the time

Check Point Harmony SASE (formerly Perimeter 81) vs Palo Alto Networks CN-Series

Compared 24% of the time

Juniper SRX Series Firewall vs Palo Alto Networks CN-Series

Compared 11% of the time

Netgate pfSense vs Palo Alto Networks CN-Series

Compared 11% of the time

Cisco Secure Firewall vs Palo Alto Networks CN-Series

Compared 8% of the time

More Palo Alto Networks CN-Series Competitors

Product Reports

Buyer's Guide

Fortinet FortiGate

March 2026

Download Fortinet FortiGate product report

Buyer's Guide

OPNsense

March 2026

Download OPNsense product report

Buyer's Guide

Firewalls

March 2026

Download Palo Alto Networks CN-Series product report

Also Known As

Fortinet FortiGate Next-Generation Firewall

No data available

Overview

Fortinet FortiGate is a versatile network security tool offering features like VPN, firewall, web filtering, intrusion prevention, and scalability. It is known for its performance and integration with other Fortinet products, making it a preferred choice for robust cybersecurity.

Fortinet FortiGate stands out as a comprehensive cybersecurity solution with strong performance and ease of configuration. It delivers unified threat management, integrating features such as dynamic routing, SD-WAN support, and centralized management. Despite its strengths, improvements in the web interface's stability, pricing structures, and reporting capabilities are needed. Users seek better integration with third-party tools and automation advancements to enhance the experience further. These enhancements, alongside improvements in bandwidth management and the reduction of licensing costs, are points of interest for users looking to capitalize on FortiGate's extensive capabilities.

What are Fortinet FortiGate's key features?

VPN: Ensures secure remote connections.
Firewall: Protects against unauthorized access.
Web Filtering: Blocks malicious sites and content.
Application Control: Manages and controls applications.
Intrusion Prevention: Detects and prevents vulnerabilities.
SSL Inspection: Enhances security by inspecting encrypted traffic.

What benefits should be considered when evaluating Fortinet FortiGate?

Affordability: Offers cost-effective security solutions.
Reliability: Known for consistent and stable performance.
Integration: Seamlessly integrates with other Fortinet products.
Comprehensive Protection: Provides broad threat protection capabilities.

Fortinet FortiGate is widely implemented across industries as a primary firewall system for securing internet gateways and safeguarding data centers. It supports businesses in achieving SD-WAN integration and enhances cybersecurity by providing essential features like antivirus, web filtering, and application control. Enterprises utilize FortiGate for securing remote connections and ensuring compliance with security standards, making it adaptable for different network sizes and industries.

Fortinet

OPNsense is an adaptable open-source firewall and routing platform appreciated for its flexibility, scalability, and user-friendly interface. It is equipped with robust security features and offers excellent reporting and visibility, essential for small businesses and home setups.

OPNsense stands out for its modular design, allowing cost-effective customization. This system supports VPNs and various firewall capabilities, making it suitable for securing networks from malicious traffic. Its frequent updates and extensive documentation, combined with a supportive online community, enhance user experience. However, there is room for improvement in integration with virtual servers and Azure. Scalability and hardware updates are important for large-scale environments, and users desire more reliable VPN solutions and enhanced threat intelligence tools.

What are OPNsense's most important features?

Flexibility: Easily customizable due to its open-source nature.
Robust Security: Advanced security features for network protection.
User-Friendly Interface: Simplified management and configuration.
Frequent Updates: Regular improvements and new features.
Dense Documentation: Extensive resources and community support.

What benefits should users look for in reviews?

Cost-Effectiveness: Open-source design reduces costs.
Scalability: Ability to grow with business needs.
Customizability: Tailored solutions for different requirements.
Community Support: Access to a strong network of resources and peers.

OPNsense is implemented in industries requiring VPN and firewall functions, supporting site-to-site connections, protecting servers, and managing commercial network traffic. Companies apply it for security, UTM, SD-WAN, content filtering, intrusion detection, and prevention, utilizing its open-source nature and effectiveness as a next-generation firewall.

OPNsense

Palo Alto Networks CN-Series offers advanced container security and micro-segmentation for Kubernetes environments, known for robust threat prevention, ease of deployment, and seamless integration with existing security infrastructure.

Palo Alto Networks CN-Series enables application-level visibility and control, providing comprehensive protection for dynamic workloads. Its scalable architecture suits modern cloud-native applications, making it a top choice for securing containerized environments and microservices. Users appreciate its automated policy creation, granular micro-segmentation, and enhanced container security. Although it offers great features, users suggest improvement in integration with other security tools, better scalability for larger environments, and enhanced documentation. Performance in high-traffic scenarios and intuitive configuration processes are areas for potential enhancement, along with improved customer support.

What are the key features of Palo Alto Networks CN-Series?

Advanced Threat Protection: Addresses and mitigates security threats efficiently.
Seamless Kubernetes Integration: Integrates easily within Kubernetes environments.
Comprehensive Visibility: Offers visibility across multi-cloud environments.
Automated Policy Creation: Simplifies the policy creation process.
Granular Micro-segmentation: Provides detailed network traffic segmentation.
Enhanced Container Security: Strengthens security measures for containerized applications.
Ease of Deployment: Simplifies overall deployment process.
Scalability: Adapts to growing needs of cloud-native applications.

What benefits or ROI can users expect from Palo Alto Networks CN-Series?

Increased Security: Effective protection against sophisticated threats.
Improved Operational Efficiency: Streamlined deployment and policy management.
Greater Visibility: Enhanced insight into network traffic and potential vulnerabilities.
Cost Savings: Reduced costs through automation and integration of security processes.
Enhanced Compliance: Helps meet regulatory requirements with strong security controls.

Palo Alto Networks CN-Series is implemented across diverse industries including finance, healthcare, and technology. In financial institutions, it addresses stringent security and compliance requirements. In healthcare, it ensures patient data protection within dynamic cloud environments. In tech, it supports innovative cloud-native applications with robust security measures.

Palo Alto Networks

Sample Customers

Amazon Web Services, Microsoft, IBM, Cisco, Dell, HP, Oracle, Verizon, AT&T, T-Mobile, Sprint, Vodafone, Orange, BT Group, Telstra, Deutsche Telekom, Comcast, Time Warner Cable, CenturyLink, NTT Communications, Tata Communications, SoftBank, China Mobile, Singtel, Telus, Rogers Communications, Bell Canada, Telkom Indonesia, Telkom South Africa, Telmex, Telia Company, Telkom Kenya

1. Deciso B.V. 2. iXsystems, Inc. 3. EuroBSDCon 4. Netgate 5. Claranet 6. Voleatech 7. Open Systems AG 8. Securebit AG 9. Proxmox Server Solutions GmbH 10. AVM Computersysteme Vertriebs GmbH Additional customers include: T-Systems International GmbH, Deutsche Telekom AG, Vodafone GmbH, 1&1 IONOS SE, OVHcloud, Hetzner Online GmbH, Strato AG, PlusServer GmbH, Host Europe GmbH, United Internet AG, 1&1 Versatel Deutschland GmbH, QSC AG, Bechtle AG, Cancom SE, Computacenter AG & Co. oHG, T-Systems Multimedia Solutions GmbH, Atos SE, Capgemini SE, Accenture plc, IBM Corporation, Hewlett Packard Enterprise Company, Cisco Systems, Inc.

Information Not Available

Buyer's Guide

OPNsense vs. Palo Alto Networks CN-Series

March 2026

Free Report: OPNsense vs. Palo Alto Networks CN-Series

Find out what your peers are saying about OPNsense vs. Palo Alto Networks CN-Series and other solutions. Updated: March 2026.

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