OPNsense vs Stormshield Network Security comparison

OPNsense and Stormshield are both solutions in the Firewalls category. Additionally, 95% of OPNsense users are willing to recommend the solution, compared to 85% of Stormshield users who would recommend it.

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Executive Summary

We performed a comparison between OPNsense and Stormshield Network Security 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. Stormshield Network Security Report (Updated: April 2026).

Buyer's Guide

OPNsense vs. Stormshield Network Security

April 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

Featured Reviews

Abhinandan Yadav

Network Security Engineer at Arrow PC Network Pvt Ltd

Unified security and sd-wan have improved uptime and cut wan costs for multi-site branches

Users report stability issues in certain versions, which requires regular updates. Real-world attacks have also highlighted the need for urgent patching of vulnerabilities.Fortinet FortiGate, while a powerful and feature-rich web firewall, could improve in areas like firmware stability, documentation, and ease of use. The learning curve can be steep for some users. For beginners, support quality can vary, and frequent updates with occasional vulnerabilities call for careful patch management. However, once Fortinet FortiGate is configured, it remains highly reliable and efficient. Customer support needs improvement, as I find it very slow, with reports from other users reflecting that customer support is inadequate.

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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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Zsolt Jónás

System Administrator at NaxoNet

Advanced GUI and layered security have supported compliance and simplified intrusion prevention

I haven't had a task that I couldn't solve with Stormshield Network Security. The active-active high availability solution would be beneficial because currently, if you build a high availability solution with Stormshield Network Security, you have a main device and another one is a backup device. The HA can switch between them, but it would be good to have a master-master solution, not just a master-slave one. I could set a URL that I can call to update the DNS record. Currently, Stormshield Network Security devices support DynDNS, which is not a usual feature request from a server environment. I have my own solution instead of DynDNS because I don't prefer it, so I have my own service for that. However, the GUI does not support using a custom service instead of DynDNS. I had to solve it in the console on Stormshield Network Security device, but it would be much better if it was reachable on the GUI. I had to figure out a trick for the IPsec configuration. In the IPsec config, we have to provide the remote side's IP address, but it's always changing. This means that an office, for example a company that has an office but without a fixed IP address, cannot be used with IPsec VPN.

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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

"It does not require a lot of maintenance."

"One of the most valuable features of FortiGate Next Generation Firewall (NGFW) is the ease of usability it offers."

"What I like about this solution is that it is simple to use, has less complications and is very straightforward."

"The solution offers very easy usability, the product can scale well, the solution is extremely reliable, the pricing and licensing models are pretty good, and the user interface, both the web and CLI versions, are very good."

"The product is very stable, easy to troubleshoot, and configure, so it has reduced the time it takes for support."

"We are a visual effects company, and there have been a number of high profile security issues in our industry. This has brought us to a higher standard of security, which our clients are very keen on these days."

"All of the features of Fortinet FortiGate are useful and the security protection is good."

"The product's most valuable features are SD-WAN and the integration of WiFi and switches."

More Fortinet FortiGate pros

"We can open a new VPN connection easily. It's much easier than with Fortinet in our experience."

"OPNsense is very stable, easy to upgrade, and maintain."

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

"OPNsense is easy to use and open source."

"OPNsense impacts my projects and home network positively because its cost-effectiveness is perfect for lab and enterprise setup without expensive licensing, and the flexibility, easy VLAN and DMZ configuration supports different zones such as web servers, mail servers, and log servers."

"Its pricing is unbeatable in comparison to other firewalls."

"What I like best about OPNsense is that, as a firewall, it's pretty good. I'm quite impressed with it. I had an excellent experience with OPNsense, which helped me achieve the targets I wanted."

"I have found the solution has some great features overall, such as guest access capabilities, dashboards, and ease of use. There is plenty of documentation and support and it has the plugins that I needed."

More OPNsense pros

"I can see what traffic is going on. I can easily block any programs from attacks."

"Stormshield is a very strong firewall and very easy to configure and maintain."

"I like that it works fine. Stormshield is a very good solution."

"Easily manageable in a variety of environments."

"I like how you can configure the rules. There is the task for the rules and a task for the network configuration. It also provides SMD filtering, and it can be integrated with the active directory for the users, their mission, and the VPN configuration. We are here in Sudan, and Stormshield didn't work in Sudan for more than a decade. Stormshield is a very strong firewall and very easy to configure and maintain. I am just working with the firewall solution, and we don't have any other solutions like endpoint solutions or something like that."

"This product has improved the way our organization functions."

"The performance of this solution is good."

"Our organization's main concern is stability, and this is a stable solution."

More Stormshield Network Security pros

Cons

"The AI part needs improvement to enhance its functionality."

"Performance and technical support are the main issues with this solution."

"Fortinet could improve the windows opener or the virtual IP solutions for opening windows. The virtual IP settings need improvement as firewalls are trending in new development directions."

"The reporting was limited."

"At first glance, the interface for the device is very confusing."

"The search tool needs improvement."

"Some features in Fortinet FortiGate need improvement as we discover when calling support that certain actions must be done from the command line."

"The setup is pretty complex and not easy to implement."

More Fortinet FortiGate cons

"The scalability needs improvement."

"The support for OPNsense is good because we have documents available on the internet. The support could improve a little."

"The feature that I would like to see in the next release, I think, would be to improve the VPN (Virtual Private Network) selection."

"The solution would not be suitable for anything large-scale."

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

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

"They should improve IPEs for security in the future."

"The user interface could be improved, and the DNS section should be more intuitive."

More OPNsense cons

"This solution has a big problem with web filtering and it needs to be improved."

"The pricing is increasing, and I would say it is a bit expensive."

"Being more cost effective. I went with a pair of Watchguard M300 recently when buying a new firewall cluster for our own use because it was way cheaper than NetASQ/Stormshield N700 while being faster, and it offers true multi-master firewall clustering if needed."

"Stormshield Network Security is quite expensive."

"I don’t recommend this product at all."

"With Stormshield, there are difficulties joining things, and it can be complex depending on the architecture."

"The stability is not that good based on my experience. We have a lot of disruptions when it comes to Stormshield."

"Improvement is needed in terms of the technical support of the manufacturer."

More Stormshield Network Security cons

Pricing and Cost Advice

"The pricing is flexible."

"Currently, we are paying about $1,500 a month for three sites."

"Before choosing a piece of equipment you have to take into account the cost-benefit offered by each one. Sometimes it is not worth paying a very cheap price to have a minimum level of security."

"The price of the license and warranty can be better because it is very expensive."

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

"It is an expensive solution."

"If you compare the price of Fortinet FortiGate IPS to other firewalls, Check Point is priced very high followed by Palo Alto and Sophos. Fortinet FortiGate IPS price is more reasonable."

"If you purchase a one-year subscription with the hardware and then you want to renew for the second year, it is very costly."

More Fortinet FortiGate pricing and cost advice

"We are using the paid version."

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

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

"It is free."

"It's a free solution."

"The solution is not expensive."

"As an appliance, it's in the medium price range."

"We are not paying any licensing fees. OPNsense is completely free for us."

More OPNsense pricing and cost advice

"The SN200 series costs between $500 USD and $600 USD per year, whereas the SN700 series costs approximately $1,000 annually."

"The price of this solution and the price of support are ok."

"For mid-sized companies, they sell their appliances for good prices."

"We bought a three-year license, and we renew it whenever it expires. The price could be better. It's always very expensive."

"I think the price is good."

"We chose Stormshield for its price, as the Azure firewall was too expensive."

"The pricing could be better."

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Top Industries

By visitors reading reviews

Computer Software Company

10%

Comms Service Provider

10%

Manufacturing Company

Financial Services Firm

Comms Service Provider

17%

Computer Software Company

11%

Manufacturing Company

Financial Services Firm

Comms Service Provider

16%

Computer Software Company

12%

Manufacturing Company

10%

Financial Services Firm

10%

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	367
Midsize Enterprise	135
Large Enterprise	193

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

By reviewers
Company Size	Count
Small Business	10
Midsize Enterprise	5
Large Enterprise	2

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 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 needs improvement with OPNsense?

In my opinion, OPNsense could improve by incorporating either an open side of wireless management or a way that you c...

See all answers

What needs improvement with Stormshield Network Security?

I haven't had a task that I couldn't solve with Stormshield Network Security. The active-active high availability sol...

See all answers

What is your primary use case for Stormshield Network Security?

I already use Stormshield Network Security, and I am now looking for a new solution. I am already working with Storms...

See all answers

What advice do you have for others considering Stormshield Network Security?

The pricing is increasing, and I would say it is a bit expensive. Palo Alto and others are much more expensive, but S...

See all answers

Comparisons

Sophos Firewall vs Fortinet FortiGate

Compared 18% of the time

Cisco Secure Firewall vs Fortinet FortiGate

Compared 13% of the time

Palo Alto Networks NG Firewalls vs Fortinet FortiGate

Compared 5% of the time

Netgate pfSense vs Fortinet FortiGate

Compared 3% of the time

Cisco Meraki MX vs Fortinet FortiGate

Compared 2% of the time

More Fortinet FortiGate Competitors

Netgate pfSense vs OPNsense

Compared 53% of the time

IPFire vs OPNsense

Compared 7% of the time

Sophos Firewall vs OPNsense

Compared 6% 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

Netgate pfSense vs Stormshield Network Security

Compared 10% of the time

Sophos UTM vs Stormshield Network Security

Compared 7% of the time

Sophos Firewall vs Stormshield Network Security

Compared 6% of the time

WatchGuard Firebox vs Stormshield Network Security

Compared 5% of the time

Cisco Secure Firewall vs Stormshield Network Security

Compared 4% of the time

More Stormshield Network Security Competitors

Product Reports

Buyer's Guide

Fortinet FortiGate

May 2026

Download Fortinet FortiGate product report

Buyer's Guide

OPNsense

April 2026

Download OPNsense product report

Buyer's Guide

Stormshield Network Security

April 2026

Download Stormshield Network Security product report

Also Known As

Fortinet FortiGate Next-Generation Firewall

No data available

NETASQ Firewalls

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

Stormshield Network Security offers comprehensive protection with features like backup inspection, scalable interface, and load balancing, suitable for network security management.

Stormshield Network Security is designed for organizations requiring reliable IT infrastructure protection, providing firewall capabilities, intrusion detection, and application control. Users find VPN support, URL filtering, and UTM functions beneficial for network management. Models like SN200 and SN910 are used globally in clustered configurations, addressing different demands. Challenges include pricing, interface friendliness, filtering configurations, and technical support.

What are the key features of Stormshield Network Security?

Backup Inspection: Enhances reliability and recovery options.
Antivirus Controls: Provides robust virus protection.
Intrusion Detection: Alerts on potential threats.
Load Balancing: Distributes network traffic efficiently.
URL Filtering: Blocks malicious websites for safe browsing.

What benefits should users seek in reviews?

Scalability: Adapts to each organization's growing needs.
Reliability: Supports clustered configurations for uptime.
Management Ease: Intuitive dashboard aids network oversight.
Performance: High throughput with efficient clustering.

Stormshield Network Security is widely implemented in industries needing IT infrastructure protection, like finance or healthcare. Organizations deploy it in data centers or branch offices, benefiting from features ensuring safety and performance. The tool supports environments that demand high security levels and robust network monitoring.

Stormshield

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.

ACESUR group, Ministry of Education Oman, Anios Laboratories, Zain, DLM Location

Buyer's Guide

OPNsense vs. Stormshield Network Security

April 2026

Free Report: OPNsense vs. Stormshield Network Security

Find out what your peers are saying about OPNsense vs. Stormshield Network Security and other solutions. Updated: April 2026.

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