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Hillstone T-Series vs OPNsense comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Sep 16, 2024

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
Sponsored
Ranking in Firewalls
1st
Average Rating
8.4
Reviews Sentiment
6.9
Number of Reviews
574
Ranking in other categories
Secure Web Gateways (SWG) (2nd), Intrusion Detection and Prevention Software (IDPS) (1st), Software Defined WAN (SD-WAN) Solutions (1st), WAN Edge (1st), ZTNA (2nd), Unified Threat Management (UTM) (1st)
Hillstone T-Series
Ranking in Firewalls
45th
Average Rating
7.4
Number of Reviews
3
Ranking in other categories
No ranking in other categories
OPNsense
Ranking in Firewalls
3rd
Average Rating
8.2
Reviews Sentiment
6.6
Number of Reviews
44
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of November 2025, in the Firewalls category, the mindshare of Fortinet FortiGate is 19.9%, up from 19.8% compared to the previous year. The mindshare of Hillstone T-Series is 0.2%, up from 0.1% compared to the previous year. The mindshare of OPNsense is 11.3%, down from 14.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Firewalls Market Share Distribution
ProductMarket Share (%)
Fortinet FortiGate19.9%
OPNsense11.3%
Hillstone T-Series0.2%
Other68.6%
Firewalls
 

Featured Reviews

Vasu Gala - PeerSpot reviewer
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.
TahirMahmood - PeerSpot reviewer
Is stable and has a user-friendly dashboard and a good interface
We installed Hillstone T-Series after a ransomware attack. The dashboard and user interface are very good We cannot secure a specific IP class with this firewall. Another loophole with Hillstone T-Series is that when we connect through WiFi and turn our hot spot on, all who connect through the…
Moutaz Sheikh Alard - PeerSpot reviewer
Has helped simulate enterprise security setups and strengthens network segmentation practices
For my capstone, I use OPNsense for my project and its broader benefits for enterprise and cybersecurity context. OPNsense is an open source based firewall and routing platform. It offers enterprise-grade features such as intrusion detection and prevention system, VPN support, traffic shaping, and web filtering, all without license cost. This platform has a modular design, a clean web-based GUI, and frequent updates that prioritize security and usability. It competes with commercial firewalls such as Cisco ASA, FortiGate, and Palo Alto, but stands out because it's community-driven, cost-effective, and transparent. I find OPNsense's feature of acting as a central firewall and gateway most valuable, providing robust point segmentation between the internal network and DMZs in my capstone project, intrusion detection to monitor malicious traffic, VPN services for secure remote access, and logging and monitoring for compliance and auditing. This allows me to simulate a real-world enterprise environment on a smaller scale, demonstrating both security hardening and network efficiency. OPNsense impacts my projects and home network positively because its cost-effectiveness is perfect for lab and enterprise setup without expensive licensing. The flexibility, easy VLAN and DMZ configuration supports different zones such as web servers, mail servers, and log servers. The security-first design for IDS/IPS integration helps me showcase modern defense-in-depth strategies. The user-friendly management through the web GUI makes it possible to manage complex firewall rules clearly, which is critical when documenting and presenting a capstone. Scalability is also an advantage. Although my project is lab-based, OPNsense can scale into production deployments in SMBs and enterprise.

Quotes from Members

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

Pros

"The solution is highly scalable because they have devices that can handle a large amount of traffic."
"The interface is very user-friendly and I like it very much."
"We were looking for the VPN feature and controlling the inflow and outflow of all the traffic within the site and across the sites. We are also using it for the VPN and VLANs."
"FortiGate is more feature-rich and has a broader range of hardware. T"
"The best features of Fortinet FortiGate include everything about networking, such as routing and VPNs."
"The solution is secure."
"The scalability is good in Fortinet FortiGate."
"It has improved our organization with control data."
"We installed Hillstone T-Series after a ransomware attack. The dashboard and user interface are very good."
"It has been stable so far."
"The only firewall able to monitor traffic from a CCTV network. Can detect unauthorized devices plugged into the network, which standard firewalls can't do."
"We saved up to half a million Egyptian pounds, which is nearly $100,000 yearly on licensing or subscription using this kind of software, and the network attacks reduced by approximately 60% after using that, even without customizing the custom configuration yet."
"One of the most valuable features is the network checking. Additionally, the firewall and web filtering functionalities are highly useful."
"OPNsense is easy to scale when running on the hardware."
"The feature I find most valuable, is that the program helped me to realize all the requested functionality that was needed."
"OPNsense is highly stable."
"It has firewall and VPN capabilities, which are very valuable features."
"The initial implementation process is simple."
"The tool's integration is more like a button press."
 

Cons

"Fortinet FortiGate can improve by integrating the web application firewall and the DDoS protection part of the solution. Having a WAF feature, web application firewall, and proxy together would be a good benefit."
"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."
"Improvements for Fortinet FortiGate could be made by making it easier to implement on networks and simpler to add users and accounts that utilize this solution. That's basically the only challenge that I see."
"Fortinet FortiGate SWG should be localised to specific regions to comply with local data privacy regulations because of the data privacy rules in the countries. In the Middle East, data organisation and KFA requirements are stringent."
"Support could be improved."
"The pricing could be reduced or include the first year warranty."
"The feedback that I have received is that the performance could be better, and the user experience is not as good compared to a previous solution we used. It could be more user-friendly. Of course, it still works fine for our operations."
"The integration with third-party tools may be something that they should work on."
"They have a very good technical support team, but I think there are some communication issues due to language differences."
"Another loophole with Hillstone T-Series is that when we connect through WiFi and turn our hot spot on, all who connect through the hotspot get all the functions, and the security does not work."
"Licensing is not cheap."
"The logging could improve in OPNsense."
"There is room for improvement in SSL inspection."
"The interface needs to be simplified. It is not user-friendly."
"Its interface should be a little bit better."
"The solution could be more secure."
"OPNsense could improve by making the configuration more web-based rather than shell or command-line-based."
"pfSense has better performance and quicker updates."
"There are a few weaknesses. For example, there is a lack of some features that I have in certain commercial products."
 

Pricing and Cost Advice

"The product is not very expensive."
"I rate FortiGate Next Generation Firewall a five out of ten for pricing."
"I had to pay for the license for the firewall, but it is guaranteed to have updates. I expect a good service for it. It was about €1000 for a year, and there was no additional cost."
"Licensing for Fortinet FortiGate is on a yearly basis. Pricing for it is a bit high. It could be cheaper."
"The price of the license and warranty can be better because it is very expensive."
"Its pricing is good. It's average or normal as compared to Palo Alto and Check Point firewalls."
"By default, they give SD-WAN along with the firewall. They don't have separate licensing for the SD-WAN functionality. However, they have security licenses that are sold separately on a subscription basis. Customers can consume these security features to protect their users from internet traffic."
"These boxes are not that expensive compared to what they can do, their functionality, and the reporting you receive. Fortinet licensing is straightforward and less confusing compared to Cisco."
"We got a much cheaper price than that provided by Fortinet right now."
"On a scale from one to ten, with one being low and ten being high price, I would rate the price of Hillstone T-Series at three. There are no additional costs other than renewal costs."
"It's not expensive."
"We are not paying any licensing fees. OPNsense is completely free for us."
"The solution is not expensive."
"OPNsense is open source software so at this time it is free for us to use."
"It is free."
"It's a free solution."
"As an appliance, it's in the medium price range."
"The price of OPNsense is good."
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Top Industries

By visitors reading reviews
Computer Software Company
14%
Comms Service Provider
9%
Manufacturing Company
8%
Financial Services Firm
6%
No data available
Comms Service Provider
16%
Computer Software Company
16%
University
6%
Manufacturing Company
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business350
Midsize Enterprise130
Large Enterprise187
No data available
By reviewers
Company SizeCount
Small Business30
Midsize Enterprise5
Large Enterprise8
 

Questions from the Community

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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...
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 ...
Ask a question
Earn 20 points
What is the difference between PfSense and OPNsense?
Two of the most common and well recognized firewalls, PfSense and OPNsense both support site-to-site IPsec VPN and cl...
What do you like most about OPNsense?
What I like the most about OPNsense is that it offers an easy-to-use dashboard for device management and control.
What is your experience regarding pricing and costs for OPNsense?
My experience with pricing, setup cost, and licensing is that since OPNsense is free, the licensing and setup was eas...
 

Also Known As

No data available
Hillstone T-Series Intelligent Next-Generation Firewalls, Hillstone iNGFW
No data available
 

Overview

 

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
University of Córdoba
1. Deciso B.V. 2. iXsystems, Inc.  3. EuroBSDCon  4. Netgate  5. Claranet  6. Voleatech  7. Open Systems AG  8. Securebit AG  9. Proxmox Server Solutions GmbH  10. AVM Computersysteme Vertriebs GmbH  Additional customers include: T-Systems International GmbH, Deutsche Telekom AG, Vodafone GmbH, 1&1 IONOS SE, OVHcloud, Hetzner Online GmbH, Strato AG, PlusServer GmbH, Host Europe GmbH, United Internet AG, 1&1 Versatel Deutschland GmbH, QSC AG, Bechtle AG, Cancom SE, Computacenter AG & Co. oHG, T-Systems Multimedia Solutions GmbH, Atos SE, Capgemini SE, Accenture plc, IBM Corporation, Hewlett Packard Enterprise Company, Cisco Systems, Inc.
Find out what your peers are saying about Hillstone T-Series vs. OPNsense and other solutions. Updated: November 2025.
873,003 professionals have used our research since 2012.