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

"This solution has a unique range of features that are not available with any other product."

"The best features of Fortinet FortiGate include its easy configuration and user interface."

"The solution effectively blocks unwanted traffic."

"The features that I have found most valuable are that it is good to use, and most importantly, the pricing. The customer especially likes the discount when they trade up or something like that."

"FortiGate's threat detection capability is excellent."

"The solution is easy to use."

"The ease of setting the solution up is a valuable aspect for us."

"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."

More Fortinet FortiGate pros

"Since it is really customizable, I can use it and avoid enabling access to the full network."

"I like the ease of deployment and its flexibility. We don't need to deal with license, quotes, procurement, delivery, and installation. Everything is software-based, and it's very easy to operate."

"The solution offers good sandboxing."

"The scalability is okay. We have around 2200 people using this solution."

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

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

"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 is a stable solution."

More Zscaler Cloud Firewall 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."

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

Cons

"The licensing model and pricing need improvement."

"In the past six to seven years with the Fortinet FortiGate, we've had two major downtimes, both caused by firmware upgrades."

"Fortinet FortiGate could improve if it had a cloud-managed solution."

"I see room to explore its integration with Secure Service Automation for a more comprehensive security view."

"There are too many updates coming for VPN, and the VPN keeps disconnecting frequently, which I find problematic. It does what it's supposed to do, but I practically face reconnection issues with the VPN."

"The visibility of the network can be better. The GUI can be improved for better visibility of the network flow. Other solutions have better GUI in terms of network visibility."

"Security is a continuous process. In every product, there is a requirement for improvement. Its pricing should also be improved according to Indian market requirements. They must also improve on the reporting part. Its reporting can be more precise. If we can get a real-time report in a specific format, it will be helpful for customers to know about the current status of their security."

"It should be more stable. There should be full integration within Fortinet products themselves as well as with other third-party products. Especially when you're not dealing with SIEM and the correlation of the security box, we want Fortinet to be able to share that information with as many other products as it can."

More Fortinet FortiGate cons

"The issue right now is probably that Zscaler is not providing web browser isolation. Another solution, Menlo, offers this. For one customer, we had to send traffic to Menlo to do the isolation for us. It was requested by the customer so that they could integrate any iframe. Zscaler needs to add this type of feature in their next release."

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

"Data Leak Prevention is only for web filtering and there is no protection for email."

"There are several areas for improvement. Firstly, the GUI is outdated, with noticeable lags and delays, especially when generating reports for past transactions."

"Apart from the issues associated with the product in areas like the DC performance issues and DC failover, Zscaler Cloud Firewall's IP should not have a proxy IP."

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

"Pricing is a challenge."

"Instead of the standard license, they should certainly provide customers with the visibility to access and view the logs."

More Zscaler Cloud Firewall cons

"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."

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

Pricing and Cost Advice

"No comment."

"At the time we bought them, I was satisfied with their pricing; I don't know how the new pricing will be."

"It has been two years. I don't remember the actual price, but it was affordable. We buy the boxes and then use the license for three years."

"It was pretty affordable. We did go a little bit above MSRP, but the service pack that was included was quite worth the additional costs. It is competitively priced compared to other major players in the market. It is significantly cheaper than Check Point, which is a primary competitor. Additionally, its pricing is comparable to that of Cisco's ASA and a few other vendors."

"We have the full license that included all of the features and support."

"FortiGate Next Generation Firewall is an expensive solution."

"Fortinet FortiGate's price can be reduced."

"Fortinet FortiGate gives you most of the features in one license."

More Fortinet FortiGate pricing and cost advice

"On a scale from one to ten, where one is cheap, and ten is expensive, I rate the solution's pricing an eight out of ten."

"It is not the most budget-friendly solution, but it's important to consider its overall value."

"It is expensive for small businesses."

"There are different subscription models available."

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

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

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

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

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...

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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 ...

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

Find out what your peers are saying about Zscaler Cloud Firewall vs. Zyxel Unified Security Gateway and other solutions. Updated: December 2025.

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