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OPNsense vs SonicWall NSv comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Sep 16, 2024

Review summaries and opinions

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

ROI

Sentiment score
5.8
Fortinet FortiGate delivers cost efficiency, improved security, and management simplicity, leading to high user satisfaction and significant ROI.
Sentiment score
3.3
Organizations achieved quick ROI with OPNsense, reducing costs, licensing fees, and improving security, saving up to $100,000 annually.
Sentiment score
5.1
SonicWall NSv improved security and productivity, reduced costs, and enhanced network monitoring, strengthening infrastructure and resource management.
Clients are now comfortable and not wasting productive hours on IT support.
Managing Director at a manufacturing company with 10,001+ employees
The automation part is giving us a cost benefit and speed; we can react faster.
BDM Fortinet & BDM Teamlead at Exclusive Networks
It's a very useful tool to mitigate and protect your enterprise.
Staff Infrastructure & Security Engineer at Mozn Systems
The network attacks reduced by approximately 60% after using that, even without customizing the custom configuration yet.
Senior IT Infrastructure Engineer at a real estate/law firm with 11-50 employees
For a very little investment, I was able to increase the security of my network.
Administrator at a retailer with 10,001+ employees
In terms of cost, using SonicWall NSv in the cloud has allowed me to avoid purchasing additional physical firewall appliances, while scaling via VM size has proven more cost-effective than hardware refresh cycles, leading to reduced overall infrastructure and firewall expansion costs.
Network Security Consultant at NTT DATA
Investment was challenging but strategic, given its advantages like 30% depreciation in the Indian ecosystem by the third year.
CEO at a recruiting/HR firm with 11-50 employees
Based on SonicWall NSv, it helped us to easily navigate through everything and get done what we needed in a very quick manner.
Senior Cybersecurity Analyst at a tech company with 10,001+ employees
 

Customer Service

Sentiment score
6.5
Fortinet FortiGate's support is valued for responsiveness but needs improvement in consistency, speed, and technical competence.
Sentiment score
5.5
OPNsense community offers strong, responsive support, often resolving user issues independently, with official service rated moderately high.
Sentiment score
8.2
SonicWall NSv customer service is praised for prompt, effective support, with high ratings despite occasional wait time concerns.
The quick resolution of issues with Fortinet FortiGate is due to the support of the company and the fact that the equipment is easy to work with.
IT Manager at a consultancy with 10,001+ employees
I would rate the technical support for Fortinet FortiGate a ten out of ten.
NAC Support at Rah Infotech Pvt Ltd
As a solution provider, when I encounter problems, I connect directly with Fortinet support, and they provide solutions within a very short time.
Manager, Information Technology Operation/Presales at TechMonarch
Compared to some open-source projects with weak support, OPNsense stands out for having both a strong community and commercial backing options.
ISO 27001 Lead Implementer at a consultancy with 11-50 employees
I mainly rely on community support since the solution is open source.
Senior Client Solutions Architect at a tech services company with 1,001-5,000 employees
If you say you do not have one, it is finished. This is where the monopoly starts.
Senior Solutions Engineer at a educational organization with 201-500 employees
Customer support for SonicWall NSv is top-notch.
IT systems and network engineer at Nelo Global Technologies Africa Limited
Whenever I create a case regarding any issue, their support is prompt and effective, adhering to the SLA, which leaves our customers very satisfied.
Project Manager in IT at IT Solutions India Pvt. Ltd.
I would rate the customer support a 10 out of 10.
HPC engineer at a manufacturing company with 201-500 employees
 

Scalability Issues

Sentiment score
7.1
Fortinet FortiGate offers excellent scalability with flexible deployment options, though hardware scalability may require planning or upgrades.
Sentiment score
6.8
OPNsense offers scalable adaptability for various environments, performing well in small to mid-sized enterprises, with flexible resource capabilities.
Sentiment score
7.5
SonicWall NSv provides scalable solutions with easy upgrades and cloud integration, enabling smooth performance improvements for growing environments.
They scale up really well from smaller models like the FortiGate 40 and 50 to bigger sites with the FortiGate 100 for more throughput - up to enterprise datacenters.
IT Manager at Daltons Limited
The variation comes in terms of the interfaces and throughputs, but from a security perspective, you get the same benefit, irrespective of whether you have an entry-level unit or an enterprise.
Cewa Solutions Architect at a tech services company with 11-50 employees
We determine sizing based on multiple factors: number of users, available links, traffic types, server count, services in use, and whether services will be published.
General Surgery Specialist at Helwan University Cairo
OPNsense is an extremely scalable solution.
Owner at Networks srl
I use Zenarmor, pinning it to one core for packet inspection, and the CPU performance seems very good.
Senior Client Solutions Architect at a tech services company with 1,001-5,000 employees
OPNsense's scalability is excellent; I just need to resize my hardware and upgrade the server, and voilà, I am good to go.
Senior IT Infrastructure Engineer at a real estate/law firm with 11-50 employees
It has met our organization's needs by allowing us to scale our security posture consistently with our cloud compute growth, increased traffic and user areas, new cloud regions, and policy complexity growth.
Senior Cybersecurity Analyst at a tech company with 10,001+ employees
Cloud scalability with SonicWall NSv has worked well and is much easier compared to the physical firewall, though it still requires good planning to avoid performance bottlenecks during peak traffic.
Network Security Consultant at NTT DATA
Nonetheless, the product is robust, eliminating major scalability concerns.
CEO at a recruiting/HR firm with 11-50 employees
 

Stability Issues

Sentiment score
7.7
Fortinet FortiGate is a reliable, stable platform needing careful configuration to avoid occasional bugs during updates.
Sentiment score
7.7
OPNsense is stable and user-friendly, though it faces minor VPN and update issues; community support enhances user experience.
Sentiment score
8.3
SonicWall NSv is praised for stability, reliable performance, effective management, and preference over Palo Alto and Sophos.
We're experiencing 99.999% availability consistently.
Manager, Information Technology at a consumer goods company with 11-50 employees
I would rate the stability of Fortinet FortiGate a ten out of ten.
NAC Support at Rah Infotech Pvt Ltd
Currently, we are experiencing a general outage of one of the main internet service providers of the Dominican Republic, and we have not been impacted in our operations because with SD-WAN, we have another internet service provider and we are working with the second WAN connection without any disruption.
CISO at a financial services firm with 1,001-5,000 employees
For home and small network use, OPNsense is also reliable, providing enterprise-grade security at no cost.
ISO 27001 Lead Implementer at a consultancy with 11-50 employees
OPNsense is the same, but it does have a way of installing the Realtek drivers, which gives you a lot more stability overall on the system.
Network and Programming Specialist at Twentytwo Integration
The only challenge faced was its inadequacy to manage large voice traffic effectively, even with dedicated hardware.
Senior Network Engineer at a comms service provider with 11-50 employees
It handles traffic well, providing reliable perimeter security with minimal interruptions.
Network Security Consultant at Terafence Private Limited
Understanding and handling these devices onsite was limited, requiring external support.
CEO at a recruiting/HR firm with 11-50 employees
It rates around eight to nine in terms of stability, and it is quite good.
Owner at IT CARE
 

Room For Improvement

Fortinet FortiGate users seek better integration, pricing, stability, security, support effectiveness, GUI ease, and documentation improvements.
OPNsense improves wireless management, VPN features, and interface while needing better virtual integration and enhanced threat intelligence and security.
SonicWall NSv struggles with pricing, slow GUI, and setup complexity while users seek improved features and support.
These sessions should be around five to ten minutes long, allowing users and partners to quickly grasp the information without disrupting their daily tasks.
Managing Director at a manufacturing company with 10,001+ employees
The solution should be able to implement machine learning and analytics of all the logs for threat detection and protection.
Senior Systems Engineer at Caribbean Development Company
It would be better for customers to get immediate replacements even with a standard subscription.
Director at a tech services company with 11-50 employees
I would like the APIs to be more mature and more developed and have more options to automate threat hunting.
Owner at Networks srl
Enhancing its performance for significant amounts of data traffic would make it closer to a perfect solution.
Senior Network Engineer at a comms service provider with 11-50 employees
It would be beneficial if they could create some videos on how to set it up themselves.
Administrator at a retailer with 10,001+ employees
I believe that application-based QoS policy is very important given the current environment. This feature should be available for application QoS as well in this firewall.
Project Manager in IT at IT Solutions India Pvt. Ltd.
When the software was downloaded, optimal hardware utilization was lacking, making hardware upgrades inevitable.
CEO at a recruiting/HR firm with 11-50 employees
Currently, we are getting challenges with user-wise reports and other reporting details.
Owner at IT CARE
 

Setup Cost

Fortinet FortiGate offers cost-effective, scalable solutions with competitive pricing, yet some users find advanced feature costs high.
OPNsense offers cost-effective open-source network security, with optional support fees but no licensing costs, competing with FortiGate and Azure Firewall.
SonicWall NSv's reasonable pricing varies by region, with competitive licensing but higher costs in places like Brazil.
Last year, I renewed the support for three years, which can sometimes be expensive but depends on the security benefits and how it helps us.
Network & System Admin at Invoke Studios
It offers cost savings as it is generally cheaper than the competition.
IT Infrastructure Architect at Apotek 1
It is about 20% cheaper.
Network Security Engineer at TD SYNNEX
They use AI for packet inspection, which integrates with OPNsense and pfSense.
Network and Programming Specialist at Twentytwo Integration
I consider the pricing of OPNsense to be high when compared with other market products.
Senior Network Engineer at a comms service provider with 11-50 employees
OPNsense is free, the licensing and setup was easy.
Administrator at a retailer with 10,001+ employees
The Global VPN will be chargeable in our product, unlike Fortinet or Sophos, where it is free—this is a major difference.
Owner at IT CARE
SonicWall NSv was a bit expensive for the subscription.
Network Architect at a computer software company with 11-50 employees
Since we have been using it for years, it makes it a bit more affordable.
DevOps Support Engineer at Bluegrass
 

Valuable Features

Fortinet FortiGate offers strong security, SD-WAN efficiency, and user-friendly management, valued for cost-effectiveness and integration with Fortinet products.
OPNsense provides scalable, cost-effective network security with advanced VPN, firewall, and filtering features for enterprises and small businesses.
SonicWall NSv offers robust security with advanced features and customization, enhancing productivity and protection in cloud environments.
We got a firewall and gave an SSL VPN to my client to connect to their servers, after which, such kind of activities involving ransomware attacks stopped.
Owner at Mindware Computer Solutions
They put in a thing called the FortiCookbook, which is very easy to read with real-life scenarios that make networking tasks like joining networks very straightforward.
IT Manager at Daltons Limited
The firewall and VPN features are the most valuable in protecting our customers' networks.
Sales & Support at a tech services company with 1-10 employees
The most valuable features include the basic firewall functionality and the GeoIP location services.
Senior Network Engineer at a comms service provider with 11-50 employees
I can have a Wi-Fi VLAN and feel secure that the server network or the VM network that I have on a different VLAN are isolated, and they cannot talk to one another, which adds a great level of security.
Administrator at a retailer with 10,001+ employees
It offers enterprise-grade features such as intrusion detection and prevention system, VPN support, traffic shaping, and web filtering, all without license cost.
ISO 27001 Lead Implementer at a consultancy with 11-50 employees
The cloud delivery threat intelligence spots suspicious behavior in just a few seconds, stopping it before execution, automatically blocking and quarantining files.
IT systems and network engineer at Nelo Global Technologies Africa Limited
SonicWall NSv has positively impacted my organization by helping us access our whitelisted web apps since we manage web apps while ensuring proper standards to prevent any information leaks.
DevOps Support Engineer at Bluegrass
When I had to establish multiple new branches and add multiple firewalls at a time for the new openings, the auto-creation of firewall rules saved me so much time on the configuration of firewalls.
network security engineer
 

Categories and Ranking

Fortinet FortiGate
Sponsored
Ranking in Firewalls
1st
Average Rating
8.4
Reviews Sentiment
6.8
Number of Reviews
591
Ranking in other categories
Secure Web Gateways (SWG) (2nd), Intrusion Detection and Prevention Software (IDPS) (1st), Software Defined WAN (SD-WAN) Solutions (1st), WAN Edge (1st), ZTNA (1st), Unified Threat Management (UTM) (1st)
OPNsense
Ranking in Firewalls
4th
Average Rating
8.2
Reviews Sentiment
6.7
Number of Reviews
46
Ranking in other categories
No ranking in other categories
SonicWall NSv
Ranking in Firewalls
16th
Average Rating
8.2
Reviews Sentiment
6.4
Number of Reviews
27
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of May 2026, in the Firewalls category, the mindshare of Fortinet FortiGate is 16.0%, down from 21.6% compared to the previous year. The mindshare of OPNsense is 8.9%, down from 10.9% compared to the previous year. The mindshare of SonicWall NSv is 0.4%, up from 0.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Firewalls Mindshare Distribution
ProductMindshare (%)
Fortinet FortiGate16.0%
OPNsense8.9%
SonicWall NSv0.4%
Other74.7%
Firewalls
 

Featured Reviews

Abhinandan Yadav - PeerSpot reviewer
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.
Moutaz Sheikh Alard - PeerSpot reviewer
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.
SG
Senior Cybersecurity Analyst at a tech company with 10,001+ employees
Secures east-west cloud traffic and improves threat visibility through deep inspection
SonicWall NSv offers great features. I cannot pinpoint a single best feature, but the best feature is the ability to deliver the full, high-efficiency inspection power of a physical SonicWall, including zero-day defense using Real-Time Deep Memory Inspection to the cloud, efficiently removing the performance versus cloud trade-off typically associated with virtual firewalls. Regarding deep memory inspection and real-time zero-day defense in SonicWall NSv, deep memory inspection is distinct from traditional sandboxing methods because it is focused on what is happening in the memory during file execution time, rather than just observing file system behavior. The deep memory inspection process addresses all challenges by employing a proprietary technique within the secure analysis environment, focusing on CPU-level analysis and real-time verdict. Those are the key points. SonicWall NSv's user interface is quite clear and easy to navigate. If someone has not worked with SonicWall and this is their first experience with the platform, I would highly recommend it. It is very easy to navigate and very user-friendly. SonicWall NSv has positively impacted our organization because we gained clear visibility into our network, and it helps to identify potential security issues that we had. We were able to remediate those issues, and so far, we have had a great experience with SonicWall NSv. We were able to manage approximately 99% of network-based attacks through this platform.
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Top Industries

By visitors reading reviews
Computer Software Company
10%
Comms Service Provider
10%
Manufacturing Company
9%
Financial Services Firm
7%
Comms Service Provider
17%
Computer Software Company
11%
Manufacturing Company
7%
Financial Services Firm
6%
Security Firm
12%
Manufacturing Company
12%
Outsourcing Company
9%
Comms Service Provider
9%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business367
Midsize Enterprise135
Large Enterprise193
By reviewers
Company SizeCount
Small Business31
Midsize Enterprise6
Large Enterprise8
By reviewers
Company SizeCount
Small Business10
Midsize Enterprise8
Large Enterprise9
 

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...
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...
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 ...
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...
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...
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...
What is your experience regarding pricing and costs for SonicWall NSV?
My experience with the pricing, setup cost, and licensing of SonicWall NSv has been mostly positive, though there are...
What needs improvement with SonicWall NSV?
Overall, SonicWall NSv is a strong and reliable virtual firewall, but based on my hands-on experience, there are a fe...
What is your primary use case for SonicWall NSV?
The main use case for SonicWall NSv is to secure virtual and cloud-based infrastructure by providing centralized fire...
 

Also Known As

Fortinet FortiGate Next-Generation Firewall
No data available
SonicWall Network Security Virtual
 

Overview

 

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
Find out what your peers are saying about OPNsense vs. SonicWall NSv and other solutions. Updated: April 2026.
893,164 professionals have used our research since 2012.