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Fortinet FortiGate vs OPNsense vs WatchGuard Firebox comparison

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Comparison Buyer's Guide

Executive Summary

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
5.9
Fortinet FortiGate enhances ROI with improved security, operational efficiency, reduced costs, downtime, and increased productivity for users.
Sentiment score
3.0
Numerous users reported substantial financial savings and improved network security with OPNsense compared to alternatives like FortiGate or Sophos.
Sentiment score
6.1
WatchGuard Firebox delivers reduced incidents, better security, and savings, despite some difficulty quantifying ROI, enhancing productivity and peace of mind.
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
When investing in cybersecurity with Fortinet FortiGate 200, which costs more than $10,000, companies that are growing directly can expect ROI within 1.5 to 3 years.
Manager, Information Technology Operation/Presales at TechMonarch
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
From a security standpoint, preventing even a single major security incident or prolonged outage can represent significant cost savings.
Senior System Administrator at a consultancy with 51-200 employees
I do not see any return on investment after WatchGuard Firebox implementation in terms of cost reductions.
CEO at ajuntament del Prat
Reduced incidents and easier management helped lower operational cost.
Security Engineer at Antina Empleos
 

Customer Service

Sentiment score
6.5
Fortinet FortiGate support is praised for promptness and knowledge but shows regional discrepancies in resolution speed and responsiveness.
Sentiment score
5.3
OPNsense users mostly find community forums and documentation sufficient, though some express dissatisfaction with official support availability and cost.
Sentiment score
6.5
WatchGuard Firebox support is praised for expertise and responsiveness, with satisfaction noted despite some regional communication challenges.
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
On a scale of one to 10, I would rate the technical support of the WatchGuard Firebox a 10.
Consultant at a tech services company with 51-200 employees
When comparing WatchGuard Firebox with other vendors such as Fortinet, SonicWall, Palo Alto, and Sophos, WatchGuard Firebox performs competitively.
Cyber Security Engineer at Underdefense
Most of the time, support engineers are knowledgeable and able to assist effectively with firewall configuration issues, VPN troubleshooting, firmware updates, and security-related concerns.
Senior System Administrator at a consultancy with 51-200 employees
 

Scalability Issues

Sentiment score
7.1
Fortinet FortiGate is scalable for all business sizes, though some models face limitations in cloud or hardware changes.
Sentiment score
6.8
OPNsense offers scalable and flexible network solutions, effectively supporting mid-sized to enterprise needs with appropriate hardware or virtualization.
Sentiment score
6.6
WatchGuard Firebox offers scalable solutions for small to mid-sized businesses, efficiently managing growth with flexible upgrades and configurations.
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
The price of the subscription is tied with the size of the appliance, so you have to size it very precisely, considering the future growth of the company.
Owner at ICAL S.A.
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
In theory, OPNsense can handle small home networks and even large enterprise environments if deployed on sufficiently powerful hardware or virtualized on a clustered system.
ISO 27001 Lead Implementer at a consultancy with 11-50 employees
Overall, WatchGuard Firebox offers strong scalability for SMBs, MSPs, branch offices, and hybrid environments while keeping deployment and management relatively straightforward.
Senior System Administrator at a consultancy with 51-200 employees
The user interface and features compared to newer firewalls are not up to the mark, which includes functionalities such as filtering, web filtering, threat protection, user identity, and UTM features that need improvement.
Senior Network Consultant at NETOPS
You can choose different models based on throughput and features, which makes it easy to support growing environments.
Security Engineer at Antina Empleos
 

Stability Issues

Sentiment score
7.7
Fortinet FortiGate offers high stability with reliable performance, though new firmware updates may occasionally cause minor issues.
Sentiment score
7.3
OPNsense is stable with occasional issues; praised for security and UI, performance varies with hardware and resource availability.
Sentiment score
8.0
WatchGuard Firebox is praised for stability, minimal downtime, and excellent performance, with prompt resolutions to occasional hardware issues.
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
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
At the latest code level, I haven't experienced any crashes.
Senior Client Solutions Architect at a tech services company with 1,001-5,000 employees
I have just one WatchGuard Firebox unit that is licensed, and I have no bugs on it, so I am happy with that.
Administrateur Systã¨Mes Et Rã©Seau at Btp Consultants
Once properly configured, the platform handles VPN connectivity, traffic inspection, and security services constantly, even in multi-site environments with remote users.
Senior System Administrator at a consultancy with 51-200 employees
There are issues with traffic hitting the firewall, which could indicate performance problems related to throughput.
Senior Network Consultant at NETOPS
 

Room For Improvement

Fortinet FortiGate needs better integration, affordability, user interface, and support, enhancing compatibility, security, and deployment simplicity for users.
OPNsense users face VPN setup issues, inadequate documentation, performance shortfalls, high pricing, and request better usability and features.
WatchGuard Firebox needs better analytics, performance, usability, pricing, support, learning resources, and cloud integration compared to high-end competitors.
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
It is how quickly each of these companies adapts to that and brings in more value to the customer.
Principal Consultant at Epitome Infotech Solutions (P) Ltd
The main area for improvement in Fortinet FortiGate is the firmware versions, as we face uncertainties regarding upgrades and frequent bugs that require self-fixing of problems.
Senior Manager IT at a tech services company with 1,001-5,000 employees
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
The documentation should be clearer because I faced some difficulties navigating many options.
ISO 27001 Lead Implementer at a consultancy with 11-50 employees
It gives good visibility and control over the traffic, and the UI makes it easy to manage policies and respond quickly when something comes up.
Manager at Cyvogenix
Some improvements in threat intelligence integrations and SIEM integration as an out-of-the-box context would be beneficial.
SOC L2 Analyst at a tech services company with 51-200 employees
The cost for renewal after three years is 75% of the hardware cost, which is a significant problem.
Owner at it logic
 

Setup Cost

Fortinet FortiGate offers competitive pricing and flexible licensing, providing cost-effective security solutions for mid-sized to large enterprises.
OPNsense is a cost-effective, open-source solution for enterprises, reducing expenses compared to FortiGate and Palo Alto alternatives.
WatchGuard Firebox offers affordable pricing and comprehensive security, appealing to small and mid-sized businesses with flexible licensing.
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
The advantages of Fortinet FortiGate over its competitors include good pricing and meeting our requirements at a lower cost.
Information Technology Infrastructure Section Head at a consumer goods company with 11-50 employees
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
When we tried to renew the Palo Alto license, the cost was beyond any reasonable range.
Digital Solution Designer at Accenture
Fortinet is more expensive than WatchGuard.
Security Engineer at Antina Empleos
I find WatchGuard Firebox to be cost-effective.
Chief Technology Officer at Falcon Automation
 

Valuable Features

Fortinet FortiGate offers robust security, seamless integration, ease of management, scalability, cost-effectiveness, and excellent customer support.
OPNsense provides user-friendly configuration, robust security features, and adaptability, making it ideal for enterprise and IT network management.
WatchGuard Firebox offers robust firewall capabilities, centralized management, and AI-enhanced security, making it ideal for scalable network protection.
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 feature is the deep inspection for traffic, which is capable of identifying zero-day attacks.
Consultant at SKYE AS
The most valuable features of the FortiGate firewall include SSL inspection, VPN functionality, and threat intelligence features for preventing threats.
IT Infrastructure Architect at Apotek 1
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 Firebox offers valuable features such as network security, URL filtering, UTM features, intrusion prevention and detection, and authentication.
Solution Architect at Simvicitsolutions
The features of WatchGuard Firebox are most valuable for maintaining network security.
Cyber Security Engineer at Underdefense
Some of the best features of WatchGuard Firebox in my experience are its ease of management, strong VPN capabilities, and integrated security services.
Senior System Administrator at a consultancy with 51-200 employees
 

Mindshare comparison

As of October 2026, in the Firewalls category, the mindshare of Fortinet FortiGate is 13.0%, down from 20.6% compared to the previous year. The mindshare of OPNsense is 7.2%, down from 11.1% compared to the previous year. The mindshare of WatchGuard Firebox is 2.0%, down from 2.8% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Firewalls Mindshare Distribution
ProductMindshare (%)
Fortinet FortiGate13.0%
OPNsense7.2%
WatchGuard Firebox2.0%
Other77.8%
Firewalls
 

Featured Reviews

reviewer2859012 - PeerSpot reviewer
Network engineer at a tech services company with 11-50 employees
Unified security platform has simplified daily network protection and accelerated troubleshooting
Fortinet FortiGate is generally easy to manage, but there are a few areas where it could be improved. The interface can become complex when managing a large number of firewall policies, and better policy search organization and reporting would be helpful. Firmware upgrades can also require careful planning and testing, especially in production environments. Troubleshooting some advanced issues may require deeper CLI knowledge or assistance from Fortinet support, and more advanced automation and AI-assisted troubleshooting within the management interface would be beneficial, such as clear recommendations for policy optimization, configuration issues, and security events. These improvements could make day-to-day administration even more efficient. More AI-driven capabilities for day-to-day administration would be valuable, especially for troubleshooting, policy optimization, and identifying potential configuration issues. More intelligent recommendations based on traffic patterns and security events could help administrators respond faster. More advanced reporting and dashboards that can be easily customized for different teams and management requirements would also be helpful, while better automation for routine tasks, firmware planning, and configuration validation would further reduce manual effort.
PM
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.
reviewer2805000 - PeerSpot reviewer
Senior System Administrator at a consultancy with 51-200 employees
Centralized security management has improved VPN reliability and simplified daily operations
WatchGuard Firebox is a strong and reliable platform overall, but there are a few areas where improvements could make the experience even better. One area is the user interface and navigation in some management tools. While the platform is powerful, certain configurations and troubleshooting workflows can feel less intuitive compared to some newer cloud-native firewall platforms. Another point is reporting and log analysis. Although the logging features are very useful, deeper analytics and more customizable reporting dashboards would make security monitoring much more effective. Firmware upgrades and policy synchronization can sometimes require careful planning to avoid security interruptions. Overall, the core security and VPN functionality are very solid, but improving usability, reporting, and automation would make the platform even stronger. One area that could be improved is the learning curve for new administrators. While experienced engineers can work with the platform effectively, some advanced networking and security configurations can be a bit complex for junior technicians. More guided configuration workflows, smarter recommendations, and simplified troubleshooting tools would make onboarding easier. Another improvement would be more flexible reporting customization for executive-level and client-facing reports.
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Comparison Review

it_user216600 - PeerSpot reviewer
Senior Technical Consultant with 51-200 employees
Jan 3, 2016
Sophos UTM vs. Fortinet FortiGate
I have used both Sophos and Fortinet products in production and I have found the Sophos UTM appliances (hardware and virtual) to be a better fit most of the time -- with a few caveats which I will touch on below. In both instances, the transition from TMG will be mostly straightforward. The main…
 

Top Industries

By visitors reading reviews
Comms Service Provider
10%
Manufacturing Company
9%
Computer Software Company
8%
Outsourcing Company
7%
Comms Service Provider
18%
Manufacturing Company
8%
Outsourcing Company
8%
Computer Software Company
7%
Outsourcing Company
13%
Comms Service Provider
12%
Manufacturing Company
9%
Financial Services Firm
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business373
Midsize Enterprise139
Large Enterprise195
By reviewers
Company SizeCount
Small Business32
Midsize Enterprise6
Large Enterprise8
By reviewers
Company SizeCount
Small Business104
Midsize Enterprise30
Large Enterprise17
 

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?
When I talk about VPN, I am not completely satisfied with the VPN functions of OPNsense. What I have received so far ...
What is your primary use case for WatchGuard Firebox?
We are providing our services to all WatchGuard customers in the region.
What is your primary use case for WatchGuard Firebox?
We just use it as a secondary WiFi device. We're a small office and we needed to set up a WiFi device for a few of ou...
What is your primary use case for WatchGuard Firebox?
We're a hospital and we use it for developing our incoming and outgoing policies, and we also use it for VPN.
 

Also Known As

Fortinet FortiGate Next-Generation Firewall
No data available
WatchGuard Threat Detection and Response, WatchGuard Application Control, WatchGuard Data Loss Prevention, WatchGuard Gateway AntiVirus, WatchGuard Intrusion Prevention Service
 

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.
Ellips, Diecutstickers.com, Clarke Energy, NCR, Wrest Park, Homeslice Pizza, Fortessa Tableware Solutions, The Phoenix Residence
Find out what your peers are saying about Fortinet, Cisco, Netgate and others in Firewalls. Updated: October 2026.
919,894 professionals have used our research since 2012.