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FortiGate Next Generation Firewall (NGFW) vs OPNsense 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
5.7
Organizations benefit financially and operationally with Fortinet FortiGate, citing savings, increased productivity, better security, and centralized management.
Sentiment score
6.9
FortiGate Firewall's ROI is mixed; praised for security benefits, yet criticized for high cost and limited immediate returns.
Sentiment score
4.4
OPNsense offers quick ROI, annual savings, improved network protection, efficiency, but faces challenges like market disruptions and cyber threats.
Clients are now comfortable and not wasting productive hours on IT support.
The automation part is giving us a cost benefit and speed; we can react faster.
It's a very useful tool to mitigate and protect your enterprise.
It has notably improved our efficiency and visibility.
Using FortiGate has enabled us to increase security, control user access, manage bandwidth, and enhance the ability to provide a variety of operations solutions to clients.
It's easy to configure a new connection, and it works in a few minutes if everything works fine.
The network attacks reduced by approximately 60% after using that, even without customizing the custom configuration yet.
For a very little investment, I was able to increase the security of my network.
 

Customer Service

Sentiment score
6.4
Fortinet FortiGate's customer support is praised for knowledgeable staff but criticized for inconsistent responsiveness and varying service quality.
Sentiment score
6.6
FortiGate customer service is generally good, with varied response times and quality rated between seven and ten.
Sentiment score
5.0
Users often solve issues using online resources, valuing community help, but suggest OPNsense centralize and improve support options.
They offer very accurate solutions.
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.
I would rate the technical support for Fortinet FortiGate a ten out of ten.
I must study the best version to install to avoid previously found bugs.
I would rate Fortinet's support a 10 because they are excellent and very available whenever we needed their help.
In some cases, you need to come prepared because the people there work by the book and ask for particular things. If you don't have them, you cannot proceed, but if you know what they need, after some time, it's pretty easy to get support or whatever you need.
Compared to some open-source projects with weak support, OPNsense stands out for having both a strong community and commercial backing options.
I mainly rely on community support since the solution is open source.
OPNsense is open source, so you have to rely on the community for customer support.
 

Scalability Issues

Sentiment score
7.0
Fortinet FortiGate is scalable, adaptable for business needs, but requires advanced planning to avoid hardware and licensing issues.
Sentiment score
7.5
FortiGate Next Generation Firewall is scalable for medium-large businesses, with strong ratings and excellent SD-WAN integration.
Sentiment score
7.4
OPNsense is scalable and adaptable, supporting small to large deployments with flexibility in hardware upgrades and virtual machines.
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.
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.
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.
The scalability of the FortiGate Next Generation Firewall (NGFW) is quite good; it is easy to make it scalable.
What it allows us in terms of connections to other companies is a straightforward solution that you don't have to use something else.
Aside from these aspects, it demonstrated good scalability.
It supports routing, VPN setups, and traffic monitoring with additional packages like Snort and Suricata.
OPNsense is an extremely scalable solution.
 

Stability Issues

Sentiment score
7.5
Fortinet FortiGate is praised for its stability and performance, though some models face issues with high traffic.
Sentiment score
8.1
FortiGate Next Generation Firewall is praised for stability, reliability, and performance despite occasional compatibility and management challenges.
Sentiment score
8.6
Users find OPNsense generally stable, though VPNs, updates, and hardware compatibility can occasionally cause issues.
We're experiencing 99.999% availability consistently.
I would rate the stability of Fortinet FortiGate a ten out of ten.
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.
Regarding next-generation firewalls, I would give the FortiGate Next Generation Firewall (NGFW) a rating of 10 for stability.
In some cases, you need to restart it, but mostly, it's working flawlessly, especially if you have an HA environment, high availability.
In my experience, there are usually no significant stability issues with FortiGate Next Generation Firewall (NGFW).
For home and small network use, OPNsense is also reliable, providing enterprise-grade security at no cost.
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.
The only challenge faced was its inadequacy to manage large voice traffic effectively, even with dedicated hardware.
 

Room For Improvement

FortiGate needs improvements in interface stability, user experience, reporting, VPNs, licensing costs, documentation, performance, and support.
FortiGate Next Generation Firewall requires better licensing, support, SD-WAN, GUI, pricing, tool integration, security features, and scalability improvements.
OPNsense's challenges include interface usability, integration issues, and the need for improved VPN, analytics, and virtualization support.
Investing in a solution that can accommodate such growth would be more cost-effective than repeatedly purchasing new hardware.
While Fortinet claims to offer a comprehensive network solution, it falls short in addressing computer application issues, particularly server security.
When considering Sophos XG, which we also use, the logging and reporting functionality is notably more efficient.
Improvements could be made when companies expand and need better equipment and more licenses.
Configuring these services is quite complex and not very user-friendly, requiring technical steps that are difficult for normal users to understand.
When a site is blocked, it is necessary for me to consult the logs to understand what the Next Generation Firewall policy has blocked.
For high availability, it's crucial to have a method in place where a designated component oversees the entire process.
Improved guidance on package usage and integration beyond relying on external tutorials or community support would be beneficial.
I would like the APIs to be more mature and more developed and have more options to automate threat hunting.
 

Setup Cost

Fortinet FortiGate is valued for cost-effectiveness, clear licensing, but renewal costs can vary compared to competitors.
FortiGate Firewall's pricing is competitive for mid-enterprises, affordable against Cisco, but higher than Barracuda and Sophos.
OPNsense is a cost-effective, open-source firewall solution with free core features, ideal for budget-conscious enterprises.
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.
It is about 20% cheaper.
The advantages of Fortinet FortiGate over its competitors include good pricing and meeting our requirements at a lower cost.
It offers cost savings as it is generally cheaper than the competition.
The pricing of FortiGate Next Generation Firewall is competitive.
Fortinet tools like FortiGate are costly for us as a higher education institute in India.
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.
It is free.
 

Valuable Features

Fortinet FortiGate is valued for its high-performance security features, ease of use, scalability, and cost-effectiveness.
FortiGate Firewall offers user-friendly, cost-effective security with advanced features, seamless integration, and robust support, favored by IT professionals.
OPNsense is appreciated for its flexibility, user-friendly interface, robust security features, and extensive customization options through open-source access.
In terms of security, we have not experienced any security flaws or loopholes, and it has proven to be quite stable.
FortiGate has helped reduce the risk of cyberattacks that might disrupt our client's production.
These features help reduce our downtime, manage the ISPs, and deploy SLAs for all the website traffic.
The firewall and VPN features are the most valuable in protecting our customers' networks.
The most valuable features of the FortiGate firewall include SSL inspection, VPN functionality, and threat intelligence features for preventing threats.
FortiGate Next Generation Firewall (NGFW) has improved our efficiency in setting up security and provided us with more visibility over some issues and incidents we previously faced.
The most valuable features include the basic firewall functionality and the GeoIP location services.
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.
It offers enterprise-grade features such as intrusion detection and prevention system, VPN support, traffic shaping, and web filtering, all without license cost.
 

Categories and Ranking

Fortinet FortiGate
Sponsored
Ranking in Firewalls
1st
Average Rating
8.4
Reviews Sentiment
6.9
Number of Reviews
411
Ranking in other categories
Software Defined WAN (SD-WAN) Solutions (1st), WAN Edge (1st)
FortiGate Next Generation F...
Ranking in Firewalls
15th
Average Rating
8.4
Reviews Sentiment
7.4
Number of Reviews
55
Ranking in other categories
ZTNA (4th), Unified Threat Management (UTM) (8th)
OPNsense
Ranking in Firewalls
3rd
Average Rating
8.4
Reviews Sentiment
6.9
Number of Reviews
43
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of September 2025, in the Firewalls category, the mindshare of Fortinet FortiGate is 20.1%, up from 18.4% compared to the previous year. The mindshare of FortiGate Next Generation Firewall (NGFW) is 0.8%, up from 0.2% compared to the previous year. The mindshare of OPNsense is 11.1%, down from 15.9% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Firewalls Market Share Distribution
ProductMarket Share (%)
Fortinet FortiGate20.1%
OPNsense11.1%
FortiGate Next Generation Firewall (NGFW)0.8%
Other68.0%
Firewalls
 

Featured Reviews

Vasu Gala - PeerSpot reviewer
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.
Juan Solano - PeerSpot reviewer
Implementation improves efficiency and provides greater visibility over issues
One of the most valuable features of FortiGate Next Generation Firewall (NGFW) is the ease of usability it offers. It is quite easy for me to learn to use. Additionally, FortiGate Next Generation Firewall (NGFW) has improved our efficiency in setting up security and provided us with more visibility over some issues and incidents we previously faced.
Moutaz Sheikh Alard - PeerSpot reviewer
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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Top Industries

By visitors reading reviews
Computer Software Company
15%
Comms Service Provider
9%
Manufacturing Company
8%
Financial Services Firm
6%
Computer Software Company
14%
Financial Services Firm
9%
Comms Service Provider
9%
University
7%
Computer Software Company
16%
Comms Service Provider
16%
University
6%
Educational Organization
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business261
Midsize Enterprise99
Large Enterprise143
By reviewers
Company SizeCount
Small Business38
Midsize Enterprise11
Large Enterprise7
By reviewers
Company SizeCount
Small Business30
Midsize Enterprise4
Large Enterprise8
 

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 do you like most about FortiGate Next Generation Firewall (NGFW)?
The tool's most valuable feature is IPS. In my experience, I haven't encountered any issues with integration. It easi...
What needs improvement with FortiGate Next Generation Firewall (NGFW)?
The FortiGate Next Generation Firewall (NGFW) could be improved in application control if they can have a bigger base...
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 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.
What is your experience regarding pricing and costs for OPNsense?
The pricing is competitive when compared to vendors like Palo and FortiNet.
 

Also Known As

FortiGate 60b, FortiGate 60c, FortiGate 80c, FortiGate 50b, FortiGate 200b, FortiGate 110c, FortiGate, Fortinet Firewall
No data available
No data available
 

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
Information Not Available
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.
Find out what your peers are saying about FortiGate Next Generation Firewall (NGFW) vs. OPNsense and other solutions. Updated: September 2025.
867,370 professionals have used our research since 2012.