Palo Alto Networks K2-Series vs Zyxel Unified Security Gateway comparison

Palo Alto Networks and Zyxel are both solutions in the Firewalls category. Additionally, 96% of Palo Alto Networks users are willing to recommend the solution, compared to 66% of Zyxel users who would recommend it.

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Executive Summary

We performed a comparison between Palo Alto Networks K2-Series 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 Palo Alto Networks K2-Series vs. Zyxel Unified Security Gateway Report (Updated: April 2025).

Buyer's Guide

Palo Alto Networks K2-Series vs. Zyxel Unified Security Gateway

April 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

EhabAli

Sr. Cybersecurity Solutions Architect at BMB

Efficient, user-friendly, and affordable

In the past, NSS Labs was utilized to test files and verify the numbers and datasheets. It would be beneficial to have an organization or testing lab that can verify the numbers in our datasheets since changes are frequently made, which can be inconvenient for review. For instance, when comparing different competitors such as Forcepoint, Palo Alto, and Check Point, the throughput or numbers in the datasheet may be lower than the actual numbers. Conversely, Fortinet typically reports very high numbers, but they cannot be replicated in the real world. Therefore, it would be advantageous for them to partner with a neutral testing organization such as NSS Labs to validate these numbers, thus providing more credibility and comfort to everyone regarding the accuracy of the datasheets. For the migration, everyone has a firewall in use and I am selling Fortinet. Typically, I am replacing another firewall. Previously, there was a tool available to convert configurations from one firewall, such as Palo Alto, to Fortinet, but this tool is no longer free. If it could be made free again, it would be very beneficial. This tool shows a lot of promise and is very good. Making it free would help many companies deliver their products in a more efficient and integrated way. It would also be more valuable to include the tool with the firewall package or license instead of having to pay extra for it. Paying extra puts more pressure on small companies to deliver the firewall and complete the configuration, especially if they have hundreds or thousands of policies. It's very painful to move through these policies line by line. The stability has room for improvement. When it comes to Secure SD-WAN, everything is fine. They are going the right way. SD-WAN is very promising. They can provide the SD-WAN solution separately, but they will not take this approach because even the smallest firewall can support the features, so there is no need to have a separate service or appliance. They are following the right steps, and there is nothing to be improved. Feature-wise, I'm really satisfied with the new release, and the features they have added. For now, it's fine.

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Krishnakumar M

enterprise architect at a tech services company with 1-10 employees

One of the best tools for the prevention of evasive threats

There is a feature called granular application controls, which I liked. Instead of relying on ports and IP addresses, they use AMP ID. This kind of solution is very good. Another valuable feature is the prevention of evasive threats, which is one of the best tools I've encountered. SSL decryption and app ID-based SSL decryption are also impressive, along with the integration with user ID. Identity-based policies ensuring only authorized users can access specific resources are excellent features. Normally, there is something called SIM or SCIM in IDA IDM, but this feature is provided on the box, which is exemplary.

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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 customization potential is quite impressive."

"Fortinet FortiGate has SD-WAN, FortiView, antivirus, sandbox, and IPS, which are generally well-known features."

"Their reliability and their policy of pre-shipping replacements when a unit has failed."

"It's great for capturing the traffic and troubleshooting it."

"Security management tool that's easy to integrate and easy to work with. No issues found with its stability and scalability."

"Fortinet FortiGate is good for helping you secure and protect mission-critical data."

"I like how we can achieve total integration."

"The solution is scalable."

More Fortinet FortiGate pros

"K2-Series' best features include its scalability, which is the best on the market."

"The scalability of the product is quite high."

"The most valuable feature of Palo Alto Networks K2-Series is the configuration, it is very clear."

"One of the most valuable features is Palo Alto's firewall management. We find it easier to manage the firewall centrally."

"The most valuable feature of Palo Alto Networks K2-Series is the performance which is above their competitors. The throughput they have delivered is good. When we used other solutions they failed the deployment when we were using different rules. They have a theory perform performance light and performance degradation. However, Palo Alto Networks K2-Series never fails in that scenario."

"Overall, this is a very simple and very effective firewall, and I am satisfied with it."

"I have found the threat profile feature valuable."

"It's easy to configure."

More Palo Alto Networks K2-Series pros

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

"The solution can scale well."

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

Cons

"Scalability is one of the disadvantages. When it comes to scalability, you have to actually change the box. If you want to upgrade it, you need to actually change the existing box and probably you take the system off to other sites."

"The monitor and the visibility, in this proxy, is very weak."

"It is very expensive, and their support is not very good. I hope that their technical support will be better in the future."

"The solution lacks sufficient filtering."

"There is room for improvement related to the logging and reporting aspect."

"This product needs to have an analysis feature, rather than having the analysis done through the integration of a different product."

"With FortiGate, the main complaint that I have heard is about the technical support."

"Its filtering is sometimes too precise or strict. We sometimes have to bypass and authorize some of the sites, but they get blocked. We know that they are trusted sites, but they are blocked, and we don't know why."

More Fortinet FortiGate cons

"I would like to see the threat intelligence capability integrated with other vendors such as Cisco and Forcepoint."

"Sometimes there are interactions with support or the provider that are not ideal."

"Threat prevention could use improvement. Not just in malware exploits and C2 traffic; enhancing web traffic protection would be a great upgrade."

"We had some issues with upgrading in the past. They could make the process easier."

"In the past, we've had trouble with Palo Alto's application filtering not getting it right. I would not be recommending layer 7 application filtering yet."

"It would be really helpful to have dashboards that provide information on IOC blockings such as where and how many. It will also be good to know how many hashing files have been reported. It would also be nice to have easy access to this information. Otherwise, it's a painful, manual task."

"They should implement the features that the other firewalls have."

"They could improve by providing more features in the solution."

More Palo Alto Networks K2-Series 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

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

"The price is okay."

"No comment."

"The price for the device and software is high. However, the solution is of good quality and has a lot of features."

"Its price is normal. If I compare it with other vendors, such as Palo Alto, it's normal. Palo Alto is expensive."

"Its price is affordable and lesser than Cisco. Cisco is expensive. In terms of licensing, there is only one issue. If a customer's license has expired a month ago and they do the renewal after one month, Fortinet renews the license from the start of the previous month. The activation of the product is done from the previous month, not from the date of renewal. The customers usually shout and complain that because they are paying today, the renewal should start from today. The support contract renewals or licensing should be renewed from the date of renewal, but Fortinet starts from the day it had expired. It is a loss for customers. They might have had some problems because of which they did not take the license one month before. Fortinet should work on this. Cisco doesn't do this. Cisco always starts from the day they apply for the license."

"Fortigate's pricing is competitive."

"Fortinet FortiGate is expensive."

More Fortinet FortiGate pricing and cost advice

"The price of this solution is too high."

"If you compare K2-Series' quality with its price, I think it is reasonable."

"This is an expensive solution, although you will get value for the price."

"The price of the solution is expensive."

"Palo Alto firewalls are very expensive."

"We are on an annual license to use Palo Alto Networks K2-Series."

"Palo Alto Networks K2-Series is an expensive solution, the price could be reduced. They are more expensive than some of their competitors."

"When comparing Palo Alto Networks K2-Series with other solutions it is on the higher end of the price scale."

More Palo Alto Networks K2-Series 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

Educational Organization

21%

Computer Software Company

14%

Comms Service Provider

Manufacturing Company

Computer Software Company

27%

Manufacturing Company

Energy/Utilities Company

Media Company

Computer Software Company

19%

Comms Service Provider

17%

Retailer

Real Estate/Law Firm

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...

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 ...

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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 Palo Alto Networks K2-Series?

It is a stable solution.

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What is your experience regarding pricing and costs for Palo Alto Networks K2-Series?

The pricing for the Palo Alto Networks K2-Series solution is affordable and there are no complaints about the licensing.

See all answers

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?

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

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What needs improvement with Zyxel Unified Security Gateway?

If you have very secure data, Zyxel Unified Security Gateway will not be very useful. My company doesn't have to deal...

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Comparisons

Sophos XG vs Fortinet FortiGate

Compared 22% of the time

Netgate pfSense vs Fortinet FortiGate

Compared 13% of the time

Cisco Secure Firewall vs Fortinet FortiGate

Compared 11% of the time

WatchGuard Firebox vs Fortinet FortiGate

Compared 5% of the time

SonicWall TZ vs Fortinet FortiGate

Compared 5% of the time

More Fortinet FortiGate Competitors

Cisco Secure Firewall vs Palo Alto Networks K2-Series

Compared 100% of the time

More Palo Alto Networks K2-Series Competitors

Netgate pfSense vs Zyxel Unified Security Gateway

Compared 17% of the time

OPNsense vs Zyxel Unified Security Gateway

Compared 12% of the time

Fortinet FortiGate-VM vs Zyxel Unified Security Gateway

Compared 8% of the time

WatchGuard Firebox vs Zyxel Unified Security Gateway

Compared 7% of the time

Sophos XG vs Zyxel Unified Security Gateway

Compared 6% of the time

More Zyxel Unified Security Gateway Competitors

Product Reports

Buyer's Guide

Fortinet FortiGate

April 2025

Download Fortinet FortiGate product report

Buyer's Guide

Palo Alto Networks K2-Series

March 2025

Download Palo Alto Networks K2-Series product report

Buyer's Guide

Unified Threat Management (UTM)

March 2025

Download Zyxel Unified Security Gateway product report

Also Known As

FortiGate 60b, FortiGate 60c, FortiGate 80c, FortiGate 50b, FortiGate 200b, FortiGate 110c, FortiGate, Fortinet Firewall

No data available

Overview

Fortinet FortiGate offers comprehensive network security and firewall protection across multiple locations. It effectively manages data traffic and secures environments with features like VPN, intrusion prevention, and UTM controls.

Organizations rely on Fortinet FortiGate for its robust integration with advanced security policies, ensuring significant protection for enterprises, cloud environments, and educational sectors. It facilitates network segmentation, application-level security, and authentication management, securing communication within and between locations such as branches and data centers. Its efficient SD-WAN and UTM features enable streamlined data management and enhanced threat protection capabilities. Users appreciate its centralized management, facilitating seamless operations across diverse environments.

What are the key features of Fortinet FortiGate?

VPN Capabilities: Ensure secure remote access for users and seamless site-to-site connections.
Intrusion Prevention System (IPS): Detect and prevent security threats and vulnerabilities.
Advanced Firewall: Offers robust firewalling with application control and web filtering.
SD-WAN: Optimizes application performance and enhances bandwidth management.
SSL VPN: Provides reliable and secure access for remote workers.

What benefits should users expect from Fortinet FortiGate?

High-performance Security: Delivers effective threat mitigation with high availability.
Centralized Management: Simplifies network operations with cloud-based management tools.
Detailed Analytics: Provides comprehensive insights into network activity and security threats.
Load Balancing: Ensures optimal resource distribution and traffic management.

Fortinet FortiGate is crucial in sectors like education, offering robust networks for secure data flow between campuses and facilitating remote learning. In enterprise environments, it allows efficient management of application traffic and security across multiple branches, while in the cloud, it seamlessly integrates with diverse platforms to enhance security infrastructure.

Fortinet

Designed to handle growing throughput needs due to increasing amounts of application-, user-, and device-generated data, the K2-Series offers amazing performance and threat prevention capabilities to stop advanced cyberattacks and secure mobile network infrastructure, subscribers, and services.

Palo Alto Networks

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

State of North Dakota, SEGA, Alameda County Office of Education, Temple University, VERGE, CAME

Information Not Available

Buyer's Guide

Palo Alto Networks K2-Series vs. Zyxel Unified Security Gateway

April 2025

Free Report: Palo Alto Networks K2-Series vs. Zyxel Unified Security Gateway

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