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Hillstone E-Series vs OpenVPN Access Server comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Mar 15, 2026

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

Hillstone E-Series
Ranking in Enterprise Infrastructure VPN
19th
Average Rating
9.0
Reviews Sentiment
7.7
Number of Reviews
10
Ranking in other categories
Firewalls (40th), SSL VPN (10th)
OpenVPN Access Server
Ranking in Enterprise Infrastructure VPN
1st
Average Rating
8.4
Reviews Sentiment
6.8
Number of Reviews
71
Ranking in other categories
ZTNA (9th)
 

Mindshare comparison

As of September 2026, in the Enterprise Infrastructure VPN category, the mindshare of Hillstone E-Series is 1.9%, up from 0.9% compared to the previous year. The mindshare of OpenVPN Access Server is 10.9%, down from 15.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Enterprise Infrastructure VPN Mindshare Distribution
ProductMindshare (%)
OpenVPN Access Server10.9%
Hillstone E-Series1.9%
Other87.2%
Enterprise Infrastructure VPN
 

Featured Reviews

TahirMahmood - PeerSpot reviewer
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.
AS
Network operation center engineer at a computer software company with 10,001+ employees
Secure remote access has protected critical data and now simplifies role-based user management
An area for improvement is the pricing model. The concurrent user licenses get expensive pretty quickly as your organization grows, so more flexible pricing options would be a huge plus. Another area is configurational disconnect. While the admin web UI handles about 90% of what you need, the moment you have to do deep, advanced routing customization, you still have to drop back to the command line interface to make those changes. It would be great to see those deeper configurations completely integrated into the web portal. Lastly, it would be awesome to see native support for newer, lighter protocols through WireGuard built straight into the platform alongside standard OpenVPN for better performance efficiency.

Quotes from Members

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

Pros

"The initial setup was straightforward. It only took a few hours to deploy."
"The most valuable feature of the solution is the ransomware protection that the tool offers."
"If an organization is not looking for a web proxy, it's a very, very good product."
"I am impressed with the application filtering feature."
"The most valuable features of the Hillstone E-Series are its hardware capacity, innovation, and the throughput that the hardware can take."
"The installation is easy, we have not had any complaints from our customers."
"The most valuable feature of the Hillstone E-Series is its user-friendliness."
"Five out of five ROI."
"The main benefits that I have seen from using OpenVPN Access Server are that it is simple, easy, and secure."
"It is open-source and free to use."
"​It allows us to give access to our office network in a safe and secure way to users, no matter which computing platform they use. ​"
"The stability is very reliable in my experience."
"The most valuable features of OpenVPN are its ease of use, client familiarity, end-user familiarity, operating system integration, and price points."
"I would recommend this solution to other people."
"It can scale well."
"What I appreciate the most about OpenVPN Access Server is that it's very easy to set up."
 

Cons

"The tool needs to improve its price."
"SSL VPN license cost is not cheap."
"Having frequent live webinars on a monthly basis would really help."
"The current usage reporting is very basic. I would like to be able to access more granular data."
"Support from Hillstone E-Series has a shortcoming that needs improvement."
"The tool only had some memory-related problems."
"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 server configuration file needs to be improved, it's the biggest problem in the configuration process."
"This solution should improve the connection speed and the user interface. The stability of this solution should be improved as well."
"My impression of the connection speed using OpenVPN Access Server is that, compared to other VPN solutions, OpenVPN Access Server is a little bit slow, but it is very safe and always connects."
"The product is fully customized through configuration files, which is all achieved through manual data entry."
"The upgrade path from older versions was more difficult than we wanted to tackle, so we ran an older version of the software for longer than I wanted. Patching, updating, and migrating to newer versions was a problem for us. That said, we were on a rather old version that I inherited yet it worked rock solid."
"The product’s connectivity is very slow. It could be faster."
"My impression of the connection speed when using OpenVPN Access Server compared to other VPN solutions is that it is stable and reliable, but it can be resource-heavy compared to newer solutions, handling day-to-day corporate traffic well while experiencing higher CPU utilization and slightly slower connection throughput compared directly to lighter protocols like WireGuard."
"If someone's key is not working, or if we had to remove someone's permission from it, or maybe an employee left the company and we had to take their key out, that seemed a little bit more complicated than it had to be."
 

Pricing and Cost Advice

"Hillstone's pricing is economical and neither very high nor very low."
"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 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."
"The cost per year for licensing, and hardware, is approximately $850 for the basic plan."
"OpenVPN Access Server is free and open source."
"The licensing has a fixed pricing."
"With regard to setup cost, pricing and/or licensing, the simple answer is that you'll need to set aside some time to learn it and experiment with it."
"The product's pricing is good value, definitely. It is one of the best features, I would say. Evaluate the product before seeing which type of licensing is good for you. I think there is a good evaluation method available for OpenVPN, so you can just evaluate if it meets your needs. Then go forward with the right licensing policy."
"I would say the product's pricing is a good value. I would recommend to other companies to implement it. I've seen other software, in tandem with the service, to be very expensive."
"Begin with the community version and upgrade to paid one if the need arises."
"The Pro Edition has a reasonable price per user."
"OpenVPN is a free and open-source solution."
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Top Industries

By visitors reading reviews
Construction Company
17%
Comms Service Provider
12%
Financial Services Firm
10%
Manufacturing Company
9%
Comms Service Provider
12%
Outsourcing Company
11%
Computer Software Company
11%
Financial Services Firm
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business9
Midsize Enterprise1
By reviewers
Company SizeCount
Small Business45
Midsize Enterprise14
Large Enterprise25
 

Questions from the Community

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 firewall, where too much memory was consumed, and the firewall was hanging a lot. Wh...
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 which are available in the firewall.
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 have not used any AI in the tool. I recommend the tool to others. I rate the tool ...
How does Fortinet FortiClient compare with Open VPN Access Server?
Fortinet FortiClient is a feature-rich solution that is easy to use and deploy without sacrificing safety and security. It has a very fast connection rate and has a built-in VPN. With this solution...
What is your experience regarding pricing and costs for OpenVPN Access Server?
The pricing and setup costs for OpenVPN Access Server are on the high side since licenses are not user-dependent but based on the number of connections established. With two free simultaneous conne...
What needs improvement with OpenVPN Access Server?
There are definitely areas for improvement. A broader network level access faces challenges, and the clustering configuration seems insufficient, posing a single point of failure. Moreover, patch m...
 

Also Known As

No data available
OpenVPN
 

Overview

 

Sample Customers

Bank of China Macao, Instituto Tecnológico Bolivariano, Ministry of Labor in San Salvador, FEDCO
Verizon, Amazon, Disney, HP, Microsoft, IBM, Samsung
Find out what your peers are saying about Hillstone E-Series vs. OpenVPN Access Server and other solutions. Updated: September 2026.
913,654 professionals have used our research since 2012.