OPNsense vs Stormshield Network Security comparison

Why PeerSpot?

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.

OPNsense

Read 47 OPNsense reviews

28,343 Views
26,642 Comparison Views

95% willing to recommend

Stormshield Network Security

Read 18 Stormshield Network Security reviews

4,439 Views
1,909 Comparison Views

85% willing to recommend

OPNsense

Stormshield Network Security

Comparison Buyer's Guide

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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: November 2026).

Buyer's Guide

OPNsense vs. Stormshield Network Security

November 2026

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Helped 920,769 peers since 2012

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

OPNsense

Average Rating

8.2

Reviews Sentiment

6.6

Number of Reviews

Ranking in other categories

Firewalls (7th)

Stormshield Network Security

Average Rating

7.8

Reviews Sentiment

5.4

Number of Reviews

Ranking in other categories

Unified Threat Management (UTM) (12th)

Featured Reviews

Peter Muiruri

IT Manager at a comms service provider with 201-500 employees

Open-source firewall has provided affordable real-time protection and secure remote access

In my opinion, OPNsense could improve by incorporating either an open side of wireless management or a way that you can also manage your interconnected devices. You could easily have SNMP, Simple Network Management Protocol, incorporated in it so that you can easily manage the devices and easily get the information about the devices that you are managing. Additionally, the inclusion of Pi-hole would allow you to create an ad-free network instead of adding it on a separate device. I would prefer that incorporated into OPNsense, or if it is there, I would appreciate guidance on how to use it.

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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.

Read full review

Quotes from Members

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

Pros

"The most valuable thing about this product is that it is very easy to use, the graphic user interface is very good, and it is user-friendly."

"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."

"URL blocking, Wireguard, Tail Scale, Engine Blocker, and VPN are the most valuable features for me."

"It's open source."

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

"We have been operating here in our lab for several months, and everything appears to be extremely stable."

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

"OPNsense is suitable for Small to Medium-sized companies."

More OPNsense pros

"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."

"The features I find most valuable is the backup inspection, the filtering, and the load balancing, and I am also impressed by the antivirus feature that gives us two controls over the viruses - one is from the parameter and one on the endpoint."

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

"The most valuable features are the IPS, the firewall function, and the price."

"The tool's most valuable feature is its dashboard, which helps you manage different aspects of a single page. The intrusion detection system helps our organization by automatically detecting and responding to potential threats. It operates similarly to Darktrace, which detects and responds automatically based on the security rules you apply. Initially, you configure everything to block, and then you can whitelist specific items as needed."

"The most valuable features of this solution are the URL filtering database, which is great and contains all internet categories, the highly scalable interface that I can turn into what I want including hybrid, bridge, or router mode, the security with no back doors that is more secure than other solutions, and the hardware performance that is also better than others."

"This solution is quick and easy to configure."

"The StormShield solution has enabled us to fully implement best practices from Microsoft in the cloud : the hub and spoke architecture."

More Stormshield Network Security pros

Cons

"There are a few weaknesses. For example, there is a lack of some features that I have in certain commercial products."

"There are issues with stability and reliability."

"OPNsense could improve by making the configuration more web-based rather than shell or command-line-based."

"On the customer-side, because I'm a small business, I need a cheaper or free solution option."

"OPNsense can be improved by making it more user-friendly, as its current UI is not that user-friendly when compared to paid software such as Sophos."

"When using the solution at the beginning was difficult. There was a steep learning curve."

"The interface of the solution is an area with shortcomings."

"The logging could improve in OPNsense."

More OPNsense cons

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

"The filtering configuration could be better. We have some difficulties with the filtering configuration and the filter extension. It's not that easy. It's not that straightforward. In the next release, I would like to see a reporting system. Stormshield doesn't have any tutorials on how to do the configuration and things like that. They just have documentation on the website. If you want to configure, for example, Cisco or Fortinet, you can find tutorials on YouTube. They show you how to configure the features, and so on. In Stormshield, there is nothing on social media or the internet on how to configure different things. The lack of documentation or the lack of material makes it difficult for others to adopt this solution."

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

"The technical support for this solution in Poland is not good."

"The filtering configuration could be better. We have some difficulties with the filtering configuration and the filter extension."

"Stormshield Network Security is quite expensive."

"The biggest issue was their support department was not able to help us, then everything stops. This is a no-go area for me."

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

More Stormshield Network Security cons

Pricing and Cost Advice

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

"There are no licensing costs for OPNsence."

"I've used the free version. My computer with two network cards at home allows me to try as many different software options as I want. I did pay for the license, but it was for the Zenarmor license, which is the packet inspection tool. They use AI for packet inspection, which integrates with OPNsense and pfSense."

"It is a free solution, and when you compare it to alternatives like FortiGate, which is quite powerful but also costly, the value becomes evident."

"I would rate the pricing a nine out of ten, especially considering the availability of a free community edition."

"The price of OPNsense is good."

"It is free."

"We are using the paid version."

More OPNsense pricing and cost advice

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

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

"I think the price is good."

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

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

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

"The pricing could be better."

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Top Industries

By visitors reading reviews

Comms Service Provider

18%

Manufacturing Company

Outsourcing Company

Computer Software Company

Comms Service Provider

17%

Manufacturing Company

12%

Construction Company

Outsourcing Company

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	32
Midsize Enterprise	6
Large Enterprise	8

By reviewers
Company Size	Count
Small Business	11
Midsize Enterprise	5
Large Enterprise	2

Questions from the Community

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 client, Open VPN and client, and PPTP client. Both also have intrusion detection a...

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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 enough. Open source license allows a beginner to have a complete firewall solution ...

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What needs improvement with OPNsense?

When I talk about VPN, I am not completely satisfied with the VPN functions of OPNsense. What I have received so far is that sometimes the VPN route caches for some time and sometimes I want to cha...

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What needs improvement with Stormshield Network Security?

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 Stormshield Network Security, and the official reseller of Stormshield.

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 Stormshield Network Security is also not inexpensive. My overall review rating fo...

See all answers

Comparisons

Netgate pfSense vs OPNsense

Compared 48% of the time

Fortinet FortiGate vs OPNsense

Compared 6% of the time

IPFire vs OPNsense

Compared 5% of the time

Sophos Firewall vs OPNsense

Compared 4% of the time

Cisco Secure Firewall vs OPNsense

Compared 4% of the time

More OPNsense Competitors

Fortinet FortiGate vs Stormshield Network Security

Compared 14% of the time

Netgate pfSense vs Stormshield Network Security

Compared 11% of the time

Sophos UTM vs Stormshield Network Security

Compared 8% of the time

Sophos Firewall vs Stormshield Network Security

Compared 4% of the time

WatchGuard Firebox vs Stormshield Network Security

Compared 4% of the time

More Stormshield Network Security Competitors

Product Reports

Buyer's Guide

OPNsense

October 2026

Download OPNsense product report

Buyer's Guide

Stormshield Network Security

October 2026

Download Stormshield Network Security product report

Also Known As

No data available

NETASQ Firewalls

Overview

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

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

November 2026

Free Report: OPNsense vs. Stormshield Network Security

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