OPNsense vs SonicWall NSv comparison

OPNsense and SonicWall are both solutions in the Firewalls category. OPNsense is ranked #3 with an average rating of 7.9, while SonicWall is ranked #39 with an average rating of 7.8. OPNsense holds a 11.0% mindshare in Firewalls, compared to SonicWall’s 0.2% mindshare. Additionally, 95% of OPNsense users are willing to recommend the solution, compared to 85% of SonicWall users who would recommend it.

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Executive SummaryUpdated on Sep 16, 2024

OPNsense and SonicWall NSv are two prominent network security solutions. SonicWall NSv offers advanced features, while OPNsense is favored for its flexibility and open-source model.

Features: OPNsense offers strong customization options, comprehensive reporting capabilities, and an open-source model. SonicWall NSv is noted for its robust threat intelligence, advanced security features, and superior feature set.

Room for Improvement: OPNsense could benefit from enhanced hardware compatibility, simplified settings, and more accessible documentation. SonicWall NSv users highlight the need for a more user-friendly configuration process, better documentation, and an improved user interface.

Ease of Deployment and Customer Service: OPNsense is easier to deploy due to simpler initial setup processes. SonicWall NSv provides superior customer support for troubleshooting and guidance.

Pricing and ROI: OPNsense's open-source nature results in lower setup costs and favorable ROI. SonicWall NSv, despite higher costs, delivers good value due to its superior features and support, making it potentially costly for smaller organizations.

To learn more, read our detailed OPNsense vs. SonicWall NSv Report (Updated: September 2025).

Buyer's Guide

OPNsense vs. SonicWall NSv

September 2025

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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 October 2025, in the Firewalls category, the mindshare of Fortinet FortiGate is 20.4%, up from 19.1% compared to the previous year. The mindshare of OPNsense is 11.0%, down from 15.1% compared to the previous year. The mindshare of SonicWall NSv is 0.2%, up from 0.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Firewalls Market Share Distribution
Product	Market Share (%)
Fortinet FortiGate	20.4%
OPNsense	11.0%
SonicWall NSv	0.2%
Other	68.4%

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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Sileesh Sivadasan

Director at Infosec Infra

Helps small businesses expand branches more easily

The price is a significant factor. Mostly in India, the customer service has many hurdles to get real support. If I want to talk to a customer executive, they ask many trivial questions. Even if I explain that I am asking for a Dell partner, they still ask specific questions, and they will explain many unnecessary questions.

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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

"There is an easy process for configuring it, and it is straightforward to implement the device from scratch."

"Customers want to load balance more than eight lines or six internet lines. FortiGate is the only solution that can accomplish this."

"The most valuable feature is the policy routing and application control."

"It has a good UI and overall integration, including FortiGate Manager for controlling all firewalls from a single place."

"The most important features of Fortinet FortiGate are the Intrusion Prevention System (IPS) and firewall control applications."

"Fortinet FortiGate offers several valuable features, particularly as an interface-based solution. Its design makes it easy to understand both incoming and outgoing network traffic through its interface."

"Has a very user-friendly interface and doesn't require any prior knowledge."

"Secure, user-friendly, stable, and scalable network security solution. Installation is straightforward."

More Fortinet FortiGate pros

"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."

"OPNsense definitely gives me peace of mind and helps my workflow because of the network isolation, as I can have multiple subnets without having to worry about one affecting the other."

"The initial setup is easy. It only takes 15-30 minutes to deploy."

"One of the most valuable features is the network checking. Additionally, the firewall and web filtering functionalities are highly useful."

"The interface and the dashboard are the most valuable features of this solution."

"I feel that its valuable features are that it is simple and free."

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

"Overall, I would rate OPNsense as nine out of ten."

More OPNsense pros

"We purchased the AGSS Bundle (Advanced Gateway Security Suite) for the security services, such as antivirus, intrusion prevention system, and anti-spyware botnet GUI."

"We are very impressed with it."

"I would rate the overall product a nine out of ten."

"The security of this system is fantastic, including the IPS and IDS."

"The customization of firewall rules provides great value to our customers as it allows them to lock things up in the way that they desire. When it is used for internal access, with a VPN in place for remote workers, the firewalling services provided by Azure, such as the default services that can be turned on, are applied. However, the use of a software-based virtual firewall gives us greater flexibility in introducing security controls for customers who are publishing applications that are publicly accessible from the public cloud. This virtual firewall provides an additional layer of security and more extensive security control options to ensure the protection of our customers' valuable information and assets."

"The solution has no additional charges and no restrictions on the number of users."

"The product helps improve our security."

"SonicWall NSV is easy to use, and you can use it to manage the logs easily."

More SonicWall NSv pros

Cons

"The initial setup and configuration are not intuitive and require training."

"My only complaint about FortiGate is a lack of QinQ VLAN tunneling. I haven't found this feature in any Fortinet product. You can do this on all Cisco routers, including the smaller models. However, QinQ isn't available on the biggest, most expensive Fortinet units. They still don't have that. I think now we're on software version 6.0, and they still haven't found a solution for QinQ. It isn't a dealbreaker, but that's my main complaint."

"I would like to see improvements in Fortinet FortiGate regarding the active-active scenario. The active-active scenario is supported but not recommended, whereas other vendors are implementing active-active without issues. Perhaps in the future, we could effectively use both firewalls to increase the throughput. If there are two boxes, they both should be able to work."

"This product needs to have an analysis feature, rather than having the analysis done through the integration of a different product."

"I think there could be more QoS features"

"The UI/UX experience can be a little better."

"With FortiGate, the main complaint that I have heard is about the technical support."

"The way everything is set up could be easier. Currently, people need a lot of experience and knowledge to administer it and to link it to devices."

More Fortinet FortiGate cons

"OPNsense struggles to handle large volumes of voice traffic, indicating scalability issues in that specific use case."

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

"While they do have paid options that actually gives better features, for most of the clients, if they tend to take a paid option will instead opt for Fortinet."

"OPNsense could be improved with a better wizard, as when I first installed it, it seemed difficult to know where to go."

"The scalability needs improvement."

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

"The only thing that I would like to see improved is the Insight or the NetFlow analysis part. It would be good to have the possibility to dig down on the Insight platform. Right now, we can easily do only a few analyses. If this page becomes more powerful, it surely will be a well-adopted platform."

"pfSense has better performance and quicker updates."

More OPNsense cons

"SonicWall NSV's SSL VPN could increase its number of users to 100-plus users."

"SonicWall NSV's initial setup is complicated and requires good knowledge."

"The engine provided initially was quite heavy, creating a trade-off between software and hardware-based threat management."

"There are limitations to bandwidth management."

"An area that could be improved is the export and import settings functionality."

"We face some challenges when we upgrade the solution."

"I would like to see the reporting opened up and have several more opportunities for automatic reports."

"Currently, we are getting challenges with user-wise reports and other reporting details. At present, they do not provide detailed reports compared to other products."

More SonicWall NSv cons

Pricing and Cost Advice

"My experience with the pricing, setup cost, and licensing for Fortinet FortiGate is quite good. I don't have a public site, such as in Azure, where I can see the pricing. I always have to go through the distributor, and that could take some time to get the real price for each appliance."

"If we have an older version, the support costs get quite high."

"Cost-wise, there is not much difference from Sophos, but feature-wise, we get more features."

"The price is relatively expensive compared to other solutions which are providing similar features."

"Fortinet prices are around $600 for the small 40F model, and for licenses, the simplest option is about $300 for a year. They sell licenses that can last for 1, 2, 3, or 5 years."

"The price of Fortinet FortiGate could improve, it is expensive."

"I think that the pricing is fair."

"Their licensing costs are annual. The UTM feature license along with their support is called FortiCare. We include that as a part of the annual maintenance cost. Palo Alto or Juniper also have an annual subscription charge for UTM. Price, of course, can always be more competitive, but it is not the most expensive product. The price-performance ratio is quite high for FortiGate."

More Fortinet FortiGate pricing and cost advice

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

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

"The solution is not expensive."

"Its pricing is unbeatable in comparison to other firewalls. You can have a small instance that could be €80 a month with the hardware underneath. Azure Firewall and FortiGate are out of the question at this price. If you are on a public cloud, you need the underlying infrastructure. Other than that, there is no additional cost. If you have it on-prem, you have to buy the server or the appliance. The hardware cost is replaced with the infrastructure cost in the cloud. You also have costs for the public IPs and underlying VMs, but that's not related to OPNsense. It would be the same for a FortiGate deployment on Azure. You need a FortiGate license, and you need the underlying infrastructure that scales up depending on your needs."

"We are using the paid version."

"It's a free solution."

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

"It is free."

More OPNsense pricing and cost advice

"We are currently using the trial version."

"The tool is moderately priced."

"Our initial purchase, which included a three-year term of support, was about $25,000 USD."

"The solution's pricing is good for the technology it offers."

"SonicWall NSV is not very costly."

"The solution’s pricing is less compared to other products."

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Top Industries

By visitors reading reviews

Computer Software Company

15%

Comms Service Provider

Manufacturing Company

Financial Services Firm

Computer Software Company

16%

Comms Service Provider

16%

University

Educational Organization

Computer Software Company

26%

Educational Organization

Performing Arts

Government

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	350
Midsize Enterprise	130
Large Enterprise	187

By reviewers
Company Size	Count
Small Business	30
Midsize Enterprise	5
Large Enterprise	8

By reviewers
Company Size	Count
Small Business	5
Midsize Enterprise	2
Large Enterprise	3

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.

See all answers

What is your experience regarding pricing and costs for OPNsense?

My experience with pricing, setup cost, and licensing is that since OPNsense is free, the licensing and setup was eas...

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What do you like most about SonicWall NSV?

The product helps improve our security.

See all answers

What is your experience regarding pricing and costs for SonicWall NSV?

I am somewhat satisfied with the price for SonicWall NSv, rating it as eight because, compared to other products, the...

See all answers

What needs improvement with SonicWall NSV?

Currently, we are getting challenges with user-wise reports and other reporting details. At present, they do not prov...

See all answers

Comparisons

Sophos XG vs Fortinet FortiGate

Compared 18% of the time

Cisco Secure Firewall vs Fortinet FortiGate

Compared 11% of the time

Netgate pfSense vs Fortinet FortiGate

Compared 9% of the time

Cisco Meraki MX vs Fortinet FortiGate

Compared 4% of the time

WatchGuard Firebox vs Fortinet FortiGate

Compared 4% of the time

More Fortinet FortiGate Competitors

Netgate pfSense vs OPNsense

Compared 38% of the time

IPFire vs OPNsense

Compared 14% of the time

Sophos XG vs OPNsense

Compared 8% of the time

Untangle NG Firewall vs OPNsense

Compared 3% of the time

Sophos XGS vs OPNsense

Compared 3% of the time

More OPNsense Competitors

SonicWall NSa vs SonicWall NSv

Compared 25% of the time

Azure Firewall vs SonicWall NSv

Compared 23% of the time

Stormshield Network Security vs SonicWall NSv

Compared 20% of the time

Fortinet FortiGate-VM vs SonicWall NSv

Compared 12% of the time

SonicWall TZ vs SonicWall NSv

Compared 10% of the time

More SonicWall NSv Competitors

Product Reports

Buyer's Guide

Fortinet FortiGate

October 2025

Download Fortinet FortiGate product report

Buyer's Guide

OPNsense

September 2025

Download OPNsense product report

Buyer's Guide

Firewalls

September 2025

Download SonicWall NSv product report

Also Known As

No data available

SonicWall Network Security Virtual

Overview

Fortinet FortiGate excels in providing integrated VPN, firewalling, and Unified Threat Management (UTM) with centralized management and high availability. It supports remote access and comprehensive threat protection, making it a preferred choice for securing networks.

Fortinet FortiGate offers a robust security platform with features such as strong intrusion prevention, application control, and web filtering. Its integration with Active Directory and SD-WAN functionality provides scalable solutions for large networks. Users appreciate its ease of use through centralized management interfaces, ensuring robust security with flexible configurations. However, FortiGate could enhance its graphical interface and technical support responsiveness, address firmware bugs and costly licensing, improve logging, integrate better with third-party tools, and strengthen scalability and memory for log storage. Complexity in configuration and the need for intuitive features are noted challenges, and there's a demand for advanced security, zero-trust capabilities, and AI integration.

What are the key features of Fortinet FortiGate?

VPN: Secure remote access and connectivity.
Firewalling: Protects networks from unauthorized access and attacks.
UTM: Offers a comprehensive approach to threat management.
SD-WAN: Optimizes traffic routing for efficient network performance.
Web Filtering: Controls and monitors web access and ensures Internet security.

What benefits or ROI should be considered?

Centralized Management: Simplifies administration and monitoring.
High Availability: Ensures consistent security and network availability.
Scalability: Adapts to the needs of growing networks.
Comprehensive Threat Protection: Provides robust security measures.
Ease of Use: Minimizes the complexity of security management.

Fortinet FortiGate is widely implemented across industries like education, finance, and government. Companies use it for firewall protection, VPN, and SD-WAN capabilities, ensuring secure perimeter and data center security. It facilitates remote access management and traffic routing optimization, offering reliable security and connectivity solutions.

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

SonicWall NSV is a software-based virtual firewall that provides additional security for customers with public-facing servers or services on Microsoft Azure. The AGSS Bundle is considered the most valuable feature, providing security services such as antivirus, intrusion prevention system, and anti-spyware botnet GUI.

Additionally, customization of firewall rules provides great value to customers, allowing them to lock things up in the way they desire. SonicWall NSV offers extensive security control options to protect customers' valuable information and assets.

SonicWall

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.

Comlogic, Depaul, Hutt City Council

Buyer's Guide

OPNsense vs. SonicWall NSv

September 2025

Free Report: OPNsense vs. SonicWall NSv

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