Hillstone E-Series vs Palo Alto Networks K2-Series comparison

Hillstone E-Series vs. Palo Alto Networks K2-Series

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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

Mindshare comparison

As of May 2026, in the Firewalls category, the mindshare of Fortinet FortiGate is 16.0%, down from 21.6% compared to the previous year. The mindshare of Hillstone E-Series is 0.6%, up from 0.3% compared to the previous year. The mindshare of Palo Alto Networks K2-Series is 0.4%, up from 0.0% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Firewalls Mindshare Distribution
Product	Mindshare (%)
Fortinet FortiGate	16.0%
Palo Alto Networks K2-Series	0.4%
Hillstone E-Series	0.6%
Other	83.0%

Firewalls

Featured Reviews

Abhinandan Yadav

Network Security Engineer at Arrow PC Network Pvt Ltd

Unified security and sd-wan have improved uptime and cut wan costs for multi-site branches

Users report stability issues in certain versions, which requires regular updates. Real-world attacks have also highlighted the need for urgent patching of vulnerabilities.Fortinet FortiGate, while a powerful and feature-rich web firewall, could improve in areas like firmware stability, documentation, and ease of use. The learning curve can be steep for some users. For beginners, support quality can vary, and frequent updates with occasional vulnerabilities call for careful patch management. However, once Fortinet FortiGate is configured, it remains highly reliable and efficient. Customer support needs improvement, as I find it very slow, with reports from other users reflecting that customer support is inadequate.

Read full review

TahirMahmood

IT Manager at Zubair Feeds

Offers good features like URL filtering, IPS, and IDS to users

We received an update for the tool in July. The update was provided for the tool as there was a problem with the firewall, where too much memory was consumed, and the firewall was hanging a lot. When we updated the tool's features, everything became okay. The tool only had some memory-related problems. It took the tool a month to fix the issues.

Read full review

Tejas Jain

Principle Cloud Architect at a tech services company with 11-50 employees

Has provided strong traffic visibility and efficient policy management for advanced network environments

Palo Alto Networks K2-Series could be improved, though I don't think of much. I'm unsure how widespread the adoption for K2-Series alone is. Looking at the base Palo Alto capabilities, they are going in the right direction. K2 specifically about its efficacy with all these 5G protocols, the GPRS tunneling protocol performed without many hiccups during testing. With AI, if there is a Precision AI bundle that you're planning on exploring, then that definitely needs a significant uplift because currently it doesn't work for all the known models. There are many false positives that need to be addressed. While it's still ahead of its competitors, on the AI security side, there is quite a room for improvement.

Read full review

Quotes from Members

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

Pros

"The system is very easy to scale."

"The SD-WAN feature is the most valuable; this feature evolved from link load balancing and has helped us in terms of our uptime and prioritizing applications whenever we experience an outage."

"Customers want to load balance more than eight lines or six internet lines. FortiGate is the only solution that can accomplish this."

"The SD-WAN feature is the most valuable. This feature evolved from link load balancing. It has helped us in terms of our uptime and privatizing applications whenever we experience an outage. The SD-WAN feature has been a plus for us. Two-factor authentication has allowed us to add more users in terms of remote working. We have two-factor authentication for remote workers to authenticate them before they get on the network."

"The best feature of Fortinet FortiGate is the IPS or IDS implementation."

"The firewall is stable and that's important."

"The product is stable and strong."

"We have received a very good ROI; it has provided significant time savings of almost 20-25%."

More Fortinet FortiGate pros

"Stability-wise, I rate the solution a ten out of ten."

"Working with the Hillstone E-Series has, from a remote perspective, allowed me to give my clients secure connectivity from a remote location to their offices or their servers."

"The most valuable feature of the solution is the ransomware protection that the tool offers."

"I am impressed with the application filtering feature."

"The initial setup was straightforward. It only took a few hours to deploy."

"The most valuable features of the Hillstone E-Series are its hardware capacity, innovation, and the throughput that the hardware can take."

"This solution has two main features that we find very valuable; a threat-intelligence option, and a web/application filtering option."

"Very reliable solution with good scalability and straightforward implementation."

More Hillstone E-Series pros

"It's easy to configure."

"Technical support is very good."

"We've found the solution offers us good stability."

"I like the tool's WildFire feature."

"The thing I like the most about Palo Alto is that the IPS system is the strongest you can get."

"The solution is reliable and scales well."

"This firewall is very good for our customers because they don't have to write their own rules for adding an application."

"Palo Alto firewalls are scalable enough. We have about 110 employees in our company, and we are about to expand to 130."

More Palo Alto Networks K2-Series pros

Cons

"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."

"It could use more templates for third-party site-to-site VPN setups other than FortiGate and Cisco."

"The initial setup is medium complex and takes between five days and a week."

"While the security is good, we'd always prefer if it was even better to ensure protection."

"Fortinet FortiGate needs to improve the protection, it did not prevent us from being attacked."

"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."

"The solution could be more secure and stable."

"There are some issues with the scalability of Fortinet FortiGate. Certain products and models need to be scalable, but they're not."

More Fortinet FortiGate cons

"The licensing model is very complex with many subcategories of licenses you can purchase. They could make it more simplified for customers to understand."

"The current usage reporting is very basic. I would like to be able to access more granular data."

"The tool only had some memory-related problems."

"Having frequent live webinars on a monthly basis would really help."

"The tool provides just a general report. It does not provide a granular report. Hence, the tool should work on its reporting feature."

"I am not sure if this solution offers active directory integration. Adding that feature will definitely be an advantage."

"The solution doesn't have a web proxy built into the system like Sophos. This is something they should work to change."

"Support from Hillstone E-Series has a shortcoming that needs improvement."

More Hillstone E-Series cons

"There are a lot of bugs in this solution."

"The solution needs to constantly be adapting and updating."

"With AI, if there is a Precision AI bundle that you're planning on exploring, then that definitely needs a significant uplift because currently it doesn't work for all the known models."

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

"From a cost perspective, I'd rate the solution two out of ten. I am trying to avoid Palo Alto, even though they have a very good solution, specifically due to the cost."

"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."

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

"It would be nice if it could easily be integrated with Elasticsearch or Nagios."

More Palo Alto Networks K2-Series cons

Pricing and Cost Advice

"It cost us around $73,000 for three years."

"The pricing is comprehensive and clear. You can easily understand what you are purchasing, including which features correspond to each license and maintenance contract. Overall, the information is straightforward. Additionally, compared to other vendors, their prices are competitive."

"Fortinet's pricing is more straightforward than other solutions. If Fortinet doesn't stick out when you're searching for a solution, you are a glutton for punishment. You only need to know two things when purchasing a Fortinet solution: your total bandwidth and bandwidth at the site. You need to estimate the future bandwidth with other solutions if your customer plans to upgrade."

"I would rate pricing to be about four or five out of ten, it is reasonable."

"If we have an older version, the support costs get quite high."

"There is a license required to use Fortinet FortiGate with all the features. It has to be updated with the threats on an ongoing basis for the signatures to prevent threats and a license is needed to receive those security updates."

"The solution's price is average."

"The pricing is justified. It's a little pricey, but what you pay for is what you get."

More Fortinet FortiGate pricing and cost advice

"The tool's pricing is reasonable. It depends on the model. The product's pricing is around 600 USD. You need to buy a software license to activate the features. You need to pay around 150 USD for that."

"Hillstone's pricing is economical and neither very high nor very low."

"The cost per year for licensing, and hardware, is approximately $850 for the basic plan."

"The licensing model is very complex with many subcategories of licenses you can purchase. They could make it more simplified for customers to understand."

"This solution is expensive compared to other, similar products."

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

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

"The price of the solution is expensive."

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

"It is an expensive solution."

"The pricing is expensive."

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

More Palo Alto Networks K2-Series pricing and cost advice

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Top Industries

By visitors reading reviews

Computer Software Company

10%

Comms Service Provider

10%

Manufacturing Company

Financial Services Firm

Comms Service Provider

14%

Construction Company

12%

Financial Services Firm

11%

Manufacturing Company

Performing Arts

17%

Financial Services Firm

12%

Marketing Services Firm

10%

Construction Company

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	367
Midsize Enterprise	135
Large Enterprise	193

By reviewers
Company Size	Count
Small Business	9
Midsize Enterprise	1

By reviewers
Company Size	Count
Small Business	15
Midsize Enterprise	7
Large Enterprise	13

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 needs improvement with Hillstone E-Series?

We received an update for the tool in July. The update was provided for the tool as there was a problem with the fire...

What is your primary use case for Hillstone E-Series?

I use the solution in my company for site-to-site VPN, SSL VPNs, URL filtering, IPS, IDS and all the other features w...

What advice do you have for others considering Hillstone E-Series?

Our company did not use the tool's micro-segmentation features. There were no issues while integrating the tool. I ha...

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...

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.

What needs improvement with Palo Alto Networks K2-Series?

Palo Alto Networks K2-Series could be improved, though I don't think of much. I'm unsure how widespread the adoption ...

Sophos Firewall vs Fortinet FortiGate

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OpenVPN Access Server vs Hillstone E-Series

Compared 16% of the time

Sangfor SSL VPN vs Hillstone E-Series

Compared 8% of the time

Sophos Firewall vs Hillstone E-Series

Compared 6% of the time

Hillstone A-Series vs Hillstone E-Series

Compared 6% of the time

Cisco IOS SSL VPN vs Hillstone E-Series

Compared 6% of the time

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Juniper SRX Series Firewall vs Palo Alto Networks K2-Series

Compared 24% of the time

Cisco Secure Firewall vs Palo Alto Networks K2-Series

Compared 18% of the time

Sophos Firewall vs Palo Alto Networks K2-Series

Compared 15% of the time

Check Point Quantum Force vs Palo Alto Networks K2-Series

Compared 12% of the time

More Palo Alto Networks K2-Series Competitors

Product Reports

Download Fortinet FortiGate product report

Fortinet FortiGate

May 2026

Firewalls

Download Hillstone E-Series product report

Palo Alto Networks K2-Series

Download Palo Alto Networks K2-Series 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

Hillstone E-Series is known for user-friendliness and advanced security features, offering high-performance threat protection with virtual switching and routing to support significant data volumes without third-party hardware. It provides top-notch firewall capabilities tailored to educational and energy sectors.

Hillstone E-Series delivers comprehensive network security with threat intelligence, ransomware protection, and state-of-the-art hardware innovation. Its 64-bit call processor facilitates handling large data volumes efficiently. Capabilities such as SSL VPN, integrated IPS, and application filtering make it a valuable choice for network protection. While further integration with a web proxy and enhanced usage reporting can enhance its offerings, enhancements in pricing models, support systems, and updates align with evolving user expectations for improved regional support and detailed analytics.

What are the standout features of Hillstone E-Series?

User-Friendliness: Intuitive setup and management for all users.
Threat Intelligence: Advanced protection against modern cyber threats.
Ransomware Protection: Strong defenses to mitigate ransomware attacks.
Hardware Innovation: Virtual switching/routing for seamless operations.
64-Bit Call Processor: Efficient performance with high data volumes.

What benefits should users expect when evaluating Hillstone E-Series?

Comprehensive Capability: Addresses complex network security needs.
Impressive Throughput: Maintains high performance under load.
Easy Policy Management: Simplifies network security rule application.
Robust Security Features: Offers extensive filtering and blocking options.

The Hillstone E-Series is implemented extensively across industries like educational institutions and energy companies to safeguard local networks against gateway-level threats. Many organizations benefit from features such as antivirus, integrated IPS, site-to-site VPN, SSL VPN, and policy management, enhancing remote work security and simplifying network management tasks.

Hillstone Networks

Palo Alto Networks K2-Series offers deep inspection, scalability, stability, and advanced security technology with easy configuration. Appreciated for its virtualization and strong DNS security, it provides a robust solution for diverse industries seeking comprehensive protection.

Palo Alto Networks K2-Series is recognized for its powerful capabilities in threat detection and prevention. Its features include WildFire, intuitive interface, and granular controls. The system supports strong IPS and SSL decryption while offering easy management and visibility solutions. Zero Trust segmentation and App-ID form the backbone of its advanced threat prevention strategy. While the initial setup is user-friendly, Panorama enhances management ease. Criticism mainly revolves around high costs, a complex interface, and desires for better third-party integration and automation. Continuous updates are required to address bugs, and there's room for improvement in reporting and threat intelligence to better user experience. Scalability and addition of certain competitive features are other areas needing enhancement.

What Are the Key Features of Palo Alto Networks K2-Series?

Deep Inspection: Offers comprehensive scanning for threats.
Scalability and Stability: Ensures reliability across large networks.
Advanced Technology: Incorporates state-of-the-art security methods.
Virtualization: Provides virtual environment support.
Strong DNS Security: Protects against DNS-based threats.
WildFire: Enhances threat detection capabilities.
Intuitive Interface: Simplifies administration and management.
Granular Controls: Allows detailed policy configurations.
Powerful IPS: Effective intrusion prevention mechanism.
SSL Decryption: Manages encrypted traffic without compromising security.

What Benefits and ROI Should Users Consider?

Improved Security: Offers robust protection for network environments.
Reduced Management Complexity: Simplifies system oversight through intuitive tools.
Comprehensive Threat Intelligence: Delivers timely updates to counteract evolving threats.
Integration Capabilities: Seamlessly links with existing Palo Alto products.

Organizations across banking, telecom, and educational sectors frequently deploy Palo Alto Networks K2-Series for its next-generation firewall capabilities, securing perimeter and data center operations. It is integrated with other Palo Alto solutions, serving as a versatile defense mechanism, enabling secure web and internet connectivity.

Palo Alto Networks

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

Bank of China Macao, Instituto Tecnológico Bolivariano, Ministry of Labor in San Salvador, FEDCO

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

Hillstone E-Series vs. Palo Alto Networks K2-Series