Zscaler Cloud Firewall vs Zyxel Unified Security Gateway comparison

Zscaler and Zyxel are both solutions in the Firewalls category. Additionally, 93% of Zscaler 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 Zscaler Cloud Firewall 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 Zscaler Cloud Firewall vs. Zyxel Unified Security Gateway Report (Updated: December 2025).

Buyer's Guide

Zscaler Cloud Firewall vs. Zyxel Unified Security Gateway

December 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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Carlos Snel

Director at Aquila ICT Solutions

Has streamlined secure deployments across large enterprises while offering reliable protection and intuitive management

The centralized management console, also referred to as the Zscaler dashboard, impacts the ability of my customers to respond to security incidents significantly. I see it as user-friendly, and clients are really happy with using it, which motivates them to keep using Zscaler Cloud Firewall because they enjoy the GUI. It's very intuitive, making it easy to navigate alerts and incidents. My clients rarely have questions about where to find specific information once Zscaler Cloud Firewall is running. The interface speaks for itself, requiring little to no additional training, which is a major plus. Advanced threat protection features in Zscaler Cloud Firewall are practically the key component that every customer wants. Unfortunately, it is an option and not included in the basic package. Clients need to pay for the next higher bundle to access it, but practically all clients I have dealt with want this feature 100%. Regarding visibility, I can confirm that Zscaler Cloud Firewall indeed includes a feature for application layer visibility embedded in the service. It provides visibility into what you're doing, which is especially interesting nowadays when discussing AI tools, as companies do not want their employees to copy-paste sensitive information into AI systems. We have seen cases such as Samsung's chip design where sensitive info got exposed. The visibility of applications, including cloud applications and AI tools, is significant for compliance with data policies, and you can also run reports and alerts on it.

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reviewer2399337

Sales and technical consultant at a manufacturing company with 10,001+ employees

User has benefited from stable performance and effective completion of security tasks

I use it mostly for VPN and for some firewall solutions When considering my main use case with VPN, I can say that I got the Zyxel Unified Security Gateway, and it works fine. However, we are thinking about using a different solution based on open source because Zyxel Unified Security Gateway…

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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

"FortiGate Next Generation Firewall has IBS/IPS systems"

"The secure web gateway module and the application control module are valuable. HA operations are very easy."

"Our project needs to link two sides through the internet. One of these was in Cairo and the other in another city. We used FortiGate as the integrating solution between the two locations, i.e. the Fortinet 30E & 100E."

"I like that they have given me a solution at a fair price."

"The solution is easy to use."

"There are great templates, so you don't have to customize them if you don't want to. You do have the option to custom create some folders and some reports, however, with what is there, you don't really need to go through extra effort, as they already give you a lot of predefined views of reports and so forth."

"The biggest lesson would be that Fortinet FortiGate provides a high level of security at a good total cost of ownership."

"The most valuable features of the FortiGate firewall include SSL inspection, VPN functionality, and threat intelligence features for preventing threats."

More Fortinet FortiGate pros

"It is a stable solution."

"If malicious traffic attacks our on-premises servers, then it gets blocked by Zscaler Cloud Firewall."

"The product’s firewall and VPN package are fantastic compared to any other solution."

"It helps a lot of companies to reduce their downtime. Also, It helps businesses in terms of being secured and protected from any threats."

"The visibility and log availability offered are highly valued for troubleshooting purposes, and this is a key factor driving customer interest in the firewall module."

"It provides in-depth visibility into your network, ensuring that traffic flowing into your organization, be it from offices or individual users, is effectively filtered and secured through multiple layers of protection."

"Zscaler Cloud Firewall understands the applications in the current generation and adapts to the present generation cloud applications."

"The technical support from Zscaler was excellent."

More Zscaler Cloud Firewall pros

"The solution can scale well."

"The most valuable features of the solution stem from web filtering, malware protection, and antivirus."

"The Zyxel Unified Security Gateway solution is stable and does its job effectively."

"This is a capable appliance and the standard features work well for us."

Cons

"Currently, without the additional reporting module, we only have access to basic reporting."

"It would be nice if FortiGate incorporated some built-in endpoint protection features. I would also like a built-in SOC dashboard for managing multiple Fortinet firewalls."

"FortiGate support could do some improvements on their IPv6 configuration. Right now it's still in the very early stage for utilizing in an enterprise level network environment."

"There are SD-WAN network monitoring, SD-WAN features, Industrial Databases, Internet of Things, Detection, etc., however, we do have not licenses for those features. We thought that if you bought a product, you should have all of the features it offers. Why should you need to make so many extra purchases to enable features? They should have one price for the entire offering."

"The solution needs to improve its support."

"The way everything is set up could be easier. Currently, people need a lot of experience and knowledge to administer it and to link it to devices."

"With the reports, you can see it, and you can get good feelings so upper management can go, "Oh, wow. That looks pretty." However, it's very basic."

"It is essential to leverage its capabilities more professionally to achieve an even higher level of security."

More Fortinet FortiGate cons

"Zscaler Cloud Firewall should have a better understanding of all dynamic cloud applications."

"There are some areas it could improve when it comes to blocking, we have to block some things manually. For example, if we block a top-level domain we have seen that the new IPs come through, the IPs are not blocked. There should be some more granular way of doing it. My only request is if you're blocking something at a top level, the sub-level sub-domains and all those other IPs should be blocked too automatically."

"They do not provide a few components that are fundamental to differentiate the products"

"One area for improvement lies in their customer service, which feels less ideal for a premium product. The response and support are sometimes inadequate, which detracts from the overall experience of an otherwise impressive solution."

"If I can get rid of Jetscaler, I will use Twingate for sure."

"The product could improve its integration with some legacy systems."

"It would be better if they improved their policy, package visibility, and flexibility while we're creating rules for inspection. It could also be cheaper or more things could be included in the basic package. In the next release, I would like better coverage in the Asia Pacific region and better quality of service."

"It would be nice to have some sort of a form factor, a physical form factor perhaps, or virtual machine that you could install on devices or on a cloud, and have some cloud computing."

More Zscaler Cloud Firewall cons

"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."

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

Pricing and Cost Advice

"For the performance that we get, the price is reasonable. There are cheaper options, but they may not deliver the same kind of performance that we want. For the performance they provide, the price is acceptable."

"I think the price of Fortinet FortiGate is very reasonable."

"The price is really low. It's cheap in comparison to the cost of Cisco or CheckPoint, for example."

"When comparing this solution to others, I would rate it a ten out of ten in terms of pricing. However, the issue of requiring a separate license for redundancy is a drawback, and I would rate it a nine out of ten."

"It's very affordable."

"The pricing for the product is alright."

"It is a good product from a price perspective versus functionality."

"I rate the price of Fortinet FortiGate SWG a seven and a half out of ten since it is not a cheap solution, though I feel it is a good product for the money one pays."

More Fortinet FortiGate pricing and cost advice

"The product is a bit expensive compared to the solutions offered by its competitors, like Palo Alto. There is a need to make yearly payments towards the license in charges associated with the product."

"It comes at a significantly reduced cost while ensuring control and effectiveness."

"Zscaler is priced too high compared to the cost of Fortinet."

"There are different subscription models available."

"There are licensing costs, and I would not say that it's a cheap vendor."

"There is an annual license required for the use of the Zscaler Cloud Firewall."

"The licensing is on a yearly basis. It is somewhere around 30 or 40 pounds per user for our organization."

"It is expensive for small businesses."

More Zscaler Cloud Firewall pricing and cost advice

"The price of Zyxel Unified Security Gateway is good compared to other similar products in the market."

"This gateway is pretty cheap."

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Top Industries

By visitors reading reviews

Computer Software Company

12%

Comms Service Provider

Manufacturing Company

Financial Services Firm

Manufacturing Company

13%

Computer Software Company

11%

Financial Services Firm

Transportation Company

Comms Service Provider

23%

Computer Software Company

11%

Outsourcing Company

Wholesaler/Distributor

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	357
Midsize Enterprise	133
Large Enterprise	188

By reviewers
Company Size	Count
Small Business	5
Midsize Enterprise	2
Large Enterprise	12

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...

See all answers

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 ...

See all answers

Which lesser known firewall product has the best chance at unseating the market leaders?

Netscope, Zscaler if they continue route they are on now. FIrewalls needs great deal of automation on each end, datac...

See all answers

What is your experience regarding pricing and costs for Zscaler Cloud Firewall?

Zscaler Cloud Firewall is quite expensive compared to competitors. However, it offered moderate value for money.

See all answers

What needs improvement with Zscaler Cloud Firewall?

In terms of improvements for Zscaler Cloud Firewall, I think every product has needed enhancements over time, and cur...

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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.

See all answers

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...

See all answers

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...

See all answers

Comparisons

Sophos Firewall vs Fortinet FortiGate

Compared 20% of the time

Cisco Secure Firewall vs Fortinet FortiGate

Compared 13% of the time

Netgate pfSense vs Fortinet FortiGate

Compared 6% of the time

OPNsense vs Fortinet FortiGate

Compared 3% of the time

Palo Alto Networks NG Firewalls vs Fortinet FortiGate

Compared 3% of the time

More Fortinet FortiGate Competitors

Check Point Quantum Force vs Zscaler Cloud Firewall

Compared 16% of the time

Palo Alto Networks NG Firewalls vs Zscaler Cloud Firewall

Compared 10% of the time

Azure Firewall vs Zscaler Cloud Firewall

Compared 8% of the time

Huawei NGFW vs Zscaler Cloud Firewall

Compared 5% of the time

Palo Alto Networks VM-Series vs Zscaler Cloud Firewall

Compared 4% of the time

More Zscaler Cloud Firewall Competitors

Netgate pfSense vs Zyxel Unified Security Gateway

Compared 14% of the time

Sophos Firewall vs Zyxel Unified Security Gateway

Compared 12% of the time

OPNsense vs Zyxel Unified Security Gateway

Compared 11% of the time

WatchGuard Firebox vs Zyxel Unified Security Gateway

Compared 5% of the time

Cisco Meraki MX vs Zyxel Unified Security Gateway

Compared 5% of the time

More Zyxel Unified Security Gateway Competitors

Product Reports

Buyer's Guide

Fortinet FortiGate

January 2026

Download Fortinet FortiGate product report

Buyer's Guide

Zscaler Cloud Firewall

January 2026

Download Zscaler Cloud Firewall product report

Buyer's Guide

Unified Threat Management (UTM)

January 2026

Download Zyxel Unified Security Gateway product report

Also Known As

Fortinet FortiGate Next-Generation Firewall

No data available

Overview

Fortinet FortiGate is a versatile network security tool offering features like VPN, firewall, web filtering, intrusion prevention, and scalability. It is known for its performance and integration with other Fortinet products, making it a preferred choice for robust cybersecurity.

Fortinet FortiGate stands out as a comprehensive cybersecurity solution with strong performance and ease of configuration. It delivers unified threat management, integrating features such as dynamic routing, SD-WAN support, and centralized management. Despite its strengths, improvements in the web interface's stability, pricing structures, and reporting capabilities are needed. Users seek better integration with third-party tools and automation advancements to enhance the experience further. These enhancements, alongside improvements in bandwidth management and the reduction of licensing costs, are points of interest for users looking to capitalize on FortiGate's extensive capabilities.

What are Fortinet FortiGate's key features?

VPN: Ensures secure remote connections.
Firewall: Protects against unauthorized access.
Web Filtering: Blocks malicious sites and content.
Application Control: Manages and controls applications.
Intrusion Prevention: Detects and prevents vulnerabilities.
SSL Inspection: Enhances security by inspecting encrypted traffic.

What benefits should be considered when evaluating Fortinet FortiGate?

Affordability: Offers cost-effective security solutions.
Reliability: Known for consistent and stable performance.
Integration: Seamlessly integrates with other Fortinet products.
Comprehensive Protection: Provides broad threat protection capabilities.

Fortinet FortiGate is widely implemented across industries as a primary firewall system for securing internet gateways and safeguarding data centers. It supports businesses in achieving SD-WAN integration and enhances cybersecurity by providing essential features like antivirus, web filtering, and application control. Enterprises utilize FortiGate for securing remote connections and ensuring compliance with security standards, making it adaptable for different network sizes and industries.

Fortinet

Zscaler enables the world’s leading organizations to securely transform their networks and applications for a mobile and cloud first world. Its flagship services, Zscaler Internet Access and Zscaler Private Access, create fast, secure connections between users and applications, regardless of device, location, or network. Zscaler services are 100% cloud-delivered and offer the simplicity, enhanced security, and improved user experience that traditional appliances or hybrid solutions are unable to match. Used in more than 185 countries, Zscaler operates the world’s largest cloud security platform, protecting thousands of enterprises and government agencies from cyberattacks and data loss.

Check more details: https://www.zscaler.com/produc...

Zscaler

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

Zenith Live, Azure, Carlsberg Group

Information Not Available

Buyer's Guide

Zscaler Cloud Firewall vs. Zyxel Unified Security Gateway

December 2025

Free Report: Zscaler Cloud Firewall vs. Zyxel Unified Security Gateway

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