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OPNsense vs Zyxel Unified Security Gateway 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:
 

Categories and Ranking

Fortinet FortiGate
Sponsored
Average Rating
8.4
Reviews Sentiment
6.9
Number of Reviews
411
Ranking in other categories
Firewalls (2nd), Software Defined WAN (SD-WAN) Solutions (1st), WAN Edge (1st)
OPNsense
Average Rating
8.4
Reviews Sentiment
6.7
Number of Reviews
40
Ranking in other categories
Firewalls (3rd)
Zyxel Unified Security Gateway
Average Rating
6.6
Reviews Sentiment
4.9
Number of Reviews
4
Ranking in other categories
Unified Threat Management (UTM) (14th)
 

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.
Akram Zaki Hussein - PeerSpot reviewer
Robust network security and management offering a user-friendly interface, open-source flexibility, and cost-effectiveness, with challenges regarding initial setup and the absence of official support
The interface is user-friendly, but there's room for improvement in terms of intuitiveness. The bundle management aspect requires additional attention to make it more intuitive, especially for inspecting high-level traffic. This is crucial, especially for larger companies where the existing features might not be the most optimal choice, given limitations like printer constraints. For high availability, it's crucial to have a method in place where a designated component oversees the entire process. Given that OPNsense plays a pivotal role as a firewall, safeguarding against various threats, having a reliable backup ensures uninterrupted protection even if unforeseen events impact the primary virtual machine. It would be beneficial if OPNsense supported additional virtualization platforms like Hyper-V from Microsoft and VMware, similar to how Kaspersky has integrated them.
Alexander Azikov - PeerSpot reviewer
A robust appliance that is reasonably priced and straightforward to set up
Although manageable, the user interface is a little bit slow and could be improved. There are two user interface options available, namely the basic and the advanced. The basic UI is not very good and doesn't have a lot of features, although it is fast. The advanced UI allows me to do whatever I want, but this is where the issue of speed exists. At one of our sites, the CPU utilization was very high, and for no reason. Technical support needs to be more responsive to requests.

Quotes from Members

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

Pros

"Fortinet FortiGate has positively impacted our organization by preventing hackers from accessing our network."
"The UTM feature is quite good. FortiAP is easy to deploy because both Fortigate and FortiAP are under the same brand. Otherwise, you need to do more work on the configuration."
"Customers want to load balance more than eight lines or six internet lines. FortiGate is the only solution that can accomplish this."
"It is a one box solution, which covers most of the edge device’s requirements."
"The most valuable features of Fortinet FortiGate are the ease of use and there are several operating systems that can include the hardware capacities. In the newer releases, the resources were more useful because they were included in the operating system."
"It is very flexible to use."
"The most valuable feature is the interface, which is very user friendly. We are utilizing most of the features, like content filtering. The firewall is powerful."
"FortiGate improved our security. It's one of the best hardware firewalls."
"The most valuable features are reporting, the Sensei plugin, and firewall capabilities."
"It has an open license. It works very well, and there is an update every month."
"OPNsense is easy to scale when running on the hardware."
"It's open source."
"The solution has high availability."
"The most valuable features of OPNsense are the GUI and frequent updates."
"The feature I find most valuable, is that the program helped me to realize all the requested functionality that was needed."
"The most valuable feature is the Dual WAN in OPNSense, which offers advanced capabilities."
"The solution can scale well."
"This is a capable appliance and the standard features work well for us."
"The most valuable features of the solution stem from web filtering, malware protection, and antivirus."
 

Cons

"Even though our currency in this part of the world is becoming increasingly weak, the pricing is now expensive for us. I have tried pushing Fortinet FortiGate to some customers, however, sometimes the transactions don't conclude due to pricing issues."
"The technical support that Fortinet provides is not satisfactory. When we call Fortinet technical support, it takes too much time to connect with them."
"For Fortinet FortiGate, their code development would definitely be something they need to improve on to reduce vulnerabilities that need to be patched."
"In most cases, the IPS engine uses too many resources, which makes Fortinet FortiGate devices unstable."
"With FortiGate, the main complaint that I have heard is about the technical support."
"The setup is pretty complex and not easy to implement."
"I believe there is room for improvement in machine learning and AI in Fortinet FortiGate. I would like to see more automation regarding AI and machine learning in Fortinet FortiGate."
"From a reporting perspective, there's room for improvement. They're providing FortiAnalyzer through which one can get some enhancements, but the visibility and reporting still need slight improvement."
"The user interface could be improved, and the DNS section should be more intuitive."
"pfSense has better performance and quicker updates."
"There is room for improvement in SSL inspection."
"The interface of the solution is an area with shortcomings."
"They should improve IPEs for security in the future."
"The solution would not be suitable for anything large-scale."
"On the customer-side, because I'm a small business, I need a cheaper or free solution option."
"The support for OPNsense is good because we have documents available on the internet. The support could improve a little."
"The product has some scalability and data management issues where improvements are required."
"Sometimes it reboots when you least expect it, and that's the main issue."
"Although manageable, the user interface is a little bit slow and could be improved."
 

Pricing and Cost Advice

"The pricing is very reasonable."
"The price is fair compared to the other competitors."
"The license is yearly. We pay for the top end. It's called 360."
"The price for the Fortinet FortiGate is reasonable. Secure SD-WAN is free of charge. If you have their firewall, it's free of charge. It's very tempting."
"The licensing costs are very low."
"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."
"It's an expensive solution."
"The price of FortiGate is comparable to that of most other firewall solutions and is more affordable than Cisco."
"We are using the paid version."
"It is open source and free."
"OPNsense is a well known open-source tool."
"I would rate the pricing a nine out of ten, especially considering the availability of a free community edition."
"The solution is not expensive."
"It's not expensive."
"We are not paying any licensing fees. OPNsense is completely free for us."
"OPNsense is an open-source solution and it is free to use."
"This gateway is pretty cheap."
"The price of Zyxel Unified Security Gateway is good compared to other similar products in the market."
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Top Industries

By visitors reading reviews
Computer Software Company
16%
Comms Service Provider
9%
Manufacturing Company
7%
Financial Services Firm
6%
Computer Software Company
16%
Comms Service Provider
15%
University
6%
Manufacturing Company
6%
Comms Service Provider
20%
Computer Software Company
15%
Retailer
7%
Outsourcing Company
5%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
 

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 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.
What do you like most about Zyxel Unified Security Gateway?
The most valuable features of the solution stem from web filtering, malware protection, and antivirus.
What is your experience regarding pricing and costs for Zyxel Unified Security Gateway?
I cannot definitively comment on whether Zyxel Unified Security Gateway is an affordable product as I haven't done co...
What needs improvement with Zyxel Unified Security Gateway?
The integration capability is quite challenging. The system is very complicated, and many features are hidden. I'm lo...
 

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
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.
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Find out what your peers are saying about OPNsense vs. Zyxel Unified Security Gateway and other solutions. Updated: July 2025.
865,295 professionals have used our research since 2012.