Fortinet FortiOS vs Zyxel Unified Security Gateway comparison

Fortinet and Zyxel are both solutions in the Firewalls category. Additionally, 98% of Fortinet users are willing to recommend the solution, compared to 50% of Zyxel users who would recommend it.

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Executive Summary

We performed a comparison between Fortinet FortiOS and Zyxel Unified Security Gateway based on real PeerSpot user reviews.

Find out in this report how the two Firewalls solutions compare in terms of features, pricing, service and support, easy of deployment, and ROI.

To learn more, read our detailed Fortinet FortiOS vs. Zyxel Unified Security Gateway Report (Updated: September 2025).

Buyer's Guide

Fortinet FortiOS vs. Zyxel Unified Security Gateway

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

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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Harshama Silva

Senior Manager at ITX360 (Pvt) Ltd

We have improved network security with user-friendly controls and high threat intelligence

FortiOS is very user-friendly and easy to configure for L1, L2, and L3 personnel. Its web filtering, application control, and IPS features are very user-friendly, easy to manage, and deploy. The threat intelligence in FortiOS is very high, and the system is scalable without additional licensing costs. FortiOS allows us to expand the number of users and devices as our network needs grow.

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Alexander Azikov

It Manager at Diamond Braces

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.

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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

"The solution protects the environment from internal and external threats."

"Fortinet FortiGate has positively impacted our organization by preventing hackers from accessing our network."

"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."

"The solution’s initial setup is very easy."

"I like the common administration and the possibility of adding Fortinet defense systems."

"I would recommend Fortinet FortiGate IPS as it is a core component of cybersecurity for our company."

"We like signature-based anomaly detection and zero-day protection features."

"Fortigate is very scalable to serve our customers' needs. We have scaled already from fifty to more than a hundred instances of Fortinet FortiGate. Around 20 staff are required for deployment and maintenance, mostly engineers."

More Fortinet FortiGate pros

"Overall, I rate FortiOS a nine out of ten."

"The most valuable features of Fortinet FortiOS are the ease of use and user-friendly interface."

"The classification of the websites is helpful."

"The solution provides good firewall and antivirus protection."

"The most important features of Fortinet FortiOS are the ability to block and make white and black lists. Additionally, the filtering of user access to websites is useful."

"This is an easy means of setting up high-availabilty firewall protection."

"We have expanded the wireless access point and switches using Fortinet FortiOS."

"We've been happy with the pricing."

More Fortinet FortiOS pros

"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

"Fortinet FortiGate is a firewall solution and once it's deployed, you can rest assured that your system is secure."

"I would like to see improvements in the IPS/IDS feature to enhance protection against attacks from attackers, including ransomware protection."

"FortiGate can only retain logs for 24 hours or 7 days. I'm not sure if it holds them for a longer period, such as for a month. It will be useful for assessing our strategy and monitoring our environment without investing in FortiGate Analyzer. It would be beneficial if Fortinet could enhance the FortiGate by providing more statistical and monitoring views for a longer timeframe, rather than requiring access to FortiGate Analyzer."

"One of the features that I would like to have is to do with endpoint production, it should be integrated. For example, the firewall gets notified of any kind of forensic event that needs to be done, such as if there is a ransomware attack and how it originated, all those records have to be available from the firewall, which is not."

"We are not utilizing Fortinet FortiGate to its full capacity because we have to pay for every small feature."

"Vulnerabilities owing to viruses in the OS need to be reduced in FortiGate Next Generation Firewall from an improvement perspective."

"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."

"The main aspect of FortiGate that could be improved is load balancing. Our management team does not want to buy another appliance for only load balancing."

More Fortinet FortiGate cons

"Their technical support needs improvement."

"Fortinet FortiOS can improve the monitoring function, it could be more accurate, easy to use, and understandable."

"The signature discs, compared to Palo Alto, aren't as good. It takes more time to get the signature updates."

"The solution's graphic interface could be a bit more responsive and include notations when changes are made."

"I would like to see the features of FortiAnalyzer included in Fortinet FortiOS. Right now, you're required to have an additional license and a different device for features such as processing the log, reporting, and analyzing traffic."

"The pricing of the product is too high."

"Could be improved by supporting an allocation of quota base management regarding user data."

"Fortinet FortiOS can improve by limiting the need for the CLI and GUI combination. The more functions they can have on the GUI and less on CLI would be helpful."

More Fortinet FortiOS cons

"The product has some scalability and data management issues where improvements are required."

"Although manageable, the user interface is a little bit slow and could be improved."

"Sometimes it reboots when you least expect it, and that's the main issue."

Pricing and Cost Advice

"The licensing costs are very competitive."

"It's one of the more expensive brands. The 100 series costs around $4,000. They are similar in pricing to what you might get from Cisco solutions and probably other similar ones. They're not more expensive than other similar solutions, but they're certainly not cheaper either."

"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."

"Although the solution's pricing is high, compared with other products, it may be cheap."

"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."

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

"The solution requires a license annually, it is not a user license, you can have as many users as your want. I must renew the license regularly per device."

"If you are looking for a quality product, it will come at a higher price. Expecting them to be significantly cheaper is unrealistic. In terms of pricing, it is a bit costly. However, the functionality and support offered are worth it."

More Fortinet FortiGate pricing and cost advice

"Pricing for the tool can vary. Sometimes, aggressive pricing is offered at the start, but later, as subscriptions and expansions are needed, the costs can increase, and customers may have to pay whatever is required."

"The Fortinet solutions can be a bit expensive."

"The price of Fortinet FortiOS is less than $10,000 annually. The price of the support is reasonable compared to competitors."

"The support contracts are usually about $100 - $200 a device."

"The scalability of Fortinet FortiOS is good. However, central management is intuitive for the end-users. We had a lot of questions about central management, and sometimes they didn't use it and did their firewall management directly on FortiGate instead of using Fortinet FortiOS."

"Regarding the cost, the initial purchase is relatively cheap because it comes bundled. However, the subscription renewals can be quite expensive. The renewal costs are high, even though the initial purchase might include discounts."

"The price of Fortinet FortiOS is reasonable and it is paid annually. You are able to select the features that you want."

"It is not cheap."

More Fortinet FortiOS pricing and cost advice

"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

15%

Comms Service Provider

Manufacturing Company

Financial Services Firm

Computer Software Company

13%

Manufacturing Company

10%

Financial Services Firm

Government

Comms Service Provider

21%

Computer Software Company

15%

Outsourcing Company

Retailer

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	42
Midsize Enterprise	13
Large Enterprise	23

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...

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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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Features comparison between Palo Alto and Fortinet firewalls

In the best tradition of these questions, Feature-wise both are quite similar, but each has things it's better at, it...

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What do you like most about Fortinet FortiOS?

The SSL VPN is fee for use is most attractive.

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What is your experience regarding pricing and costs for Fortinet FortiOS?

I rate the pricing for FortiOS as eight or nine out of ten. It is an affordable solution for us.

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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.

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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...

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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...

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Comparisons

Sophos XG vs Fortinet FortiGate

Compared 17% of the time

Cisco Secure Firewall vs Fortinet FortiGate

Compared 11% of the time

Netgate pfSense vs Fortinet FortiGate

Compared 9% of the time

OPNsense vs Fortinet FortiGate

Compared 4% of the time

Fortinet FortiGate-VM vs Fortinet FortiGate

Compared 2% of the time

More Fortinet FortiGate Competitors

Cisco Secure Firewall vs Fortinet FortiOS

Compared 11% of the time

Fortinet FortiWeb vs Fortinet FortiOS

Compared 10% of the time

Fortinet FortiManager vs Fortinet FortiOS

Compared 8% of the time

Fortinet FortiGate-VM vs Fortinet FortiOS

Compared 4% of the time

WatchGuard Firebox vs Fortinet FortiOS

Compared 3% of the time

More Fortinet FortiOS Competitors

Netgate pfSense vs Zyxel Unified Security Gateway

Compared 13% of the time

OPNsense vs Zyxel Unified Security Gateway

Compared 11% of the time

WatchGuard Firebox vs Zyxel Unified Security Gateway

Compared 7% of the time

Sophos XG vs Zyxel Unified Security Gateway

Compared 5% of the time

Juniper SRX Series Firewall vs Zyxel Unified Security Gateway

Compared 2% of the time

More Zyxel Unified Security Gateway Competitors

Product Reports

Buyer's Guide

Fortinet FortiGate

September 2025

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Buyer's Guide

Fortinet FortiOS

September 2025

Download Fortinet FortiOS product report

Buyer's Guide

Unified Threat Management (UTM)

September 2025

Download Zyxel Unified Security Gateway product report

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

Fortinet FortiOS is a comprehensive security operating system that powers Fortinet's network security solutions. It provides advanced threat protection, network visibility, and centralized management for organizations of all sizes. With its robust features and intuitive interface, FortiOS enables businesses to secure their networks, applications, and data from cyber threats.

One of the key features of FortiOS is its advanced threat protection capabilities. It incorporates multiple security technologies, including firewall, antivirus, intrusion prevention system (IPS), and web filtering, to detect and block a wide range of threats. This ensures that organizations are protected against malware, ransomware, and other malicious activities. FortiOS also offers extensive network visibility, allowing organizations to monitor and analyze network traffic in real-time. This visibility enables businesses to identify potential security risks, detect anomalies, and take proactive measures to mitigate threats.

Additionally, FortiOS provides detailed reports and analytics, helping organizations gain insights into their network security posture. Centralized management is another crucial aspect of FortiOS. It allows businesses to manage and configure their security policies, devices, and users from a single console. This simplifies the management process and ensures consistent security across the entire network infrastructure.

Moreover, FortiOS supports integration with other Fortinet products, enabling seamless security orchestration and automation. FortiOS is designed to be scalable and flexible, making it suitable for organizations of all sizes. It offers a range of deployment options, including physical appliances, virtual machines, and cloud-based solutions. This flexibility allows businesses to choose the deployment model that best fits their requirements and easily scale their security infrastructure as their needs evolve.

Fortinet

ZyWALL USG Series delivers high-access quality to help businesses satisfy the demand for always-online communications. For internal deployments, the ZyWALL USG Series provides active-passive High-Availability (HA) service to support device or connection failover.

With Device HA Pro service, the ZyWALL USG Series also supports instant failover, so connections are always maintained when a failover event occurs. For external deployments, the ZyWALL USG Series features multi- WAN load balancing/failover and a comprehensive mobile broadband USB modem support list for WAN backup operations. The ZyWALL USG Series also supports IPSec load balancing and failover, providing additional resilience for mission-critical VPN failover with VTI Interface deployments.

ZyWALL USG110/210/310 thoroughly protects networks with industry-leading firewall, Anti-Malware/ Virus, Anti-Spam, Content Filtering, IDP, and Application Patrol functionality. Regulate unauthorized use of Web applications over your network, such as Facebook, Google apps, and Netflix, among others. Zyxel security measures are enhanced with SSL Inspection, blocking threats hidden in SSL-encrypted connections while facilitating deeper policy enforcement. Furthermore, newly improved Content Filtering 2.0 enhances HTTPS Domain Filter, Browser SafeSearch, and Geo IP Blocking for an array of security enhancements to ensure clean Web connections.

Zyxel

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

Black Gold Regional Schools, Amadeus Hospitality, Jefferson County, Chunghwa Telecom, City of Boroondara, Dimension Data

Information Not Available

Buyer's Guide

Fortinet FortiOS vs. Zyxel Unified Security Gateway

September 2025

Free Report: Fortinet FortiOS vs. Zyxel Unified Security Gateway

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