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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

"Stability-wise, I rate the solution a ten out of ten."
"This solution has two main features that we find very valuable; a threat-intelligence option, and a web/application filtering option. The technical support team are very good and very quick."
"The most valuable feature of the solution is the ransomware protection that the tool offers."
"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 Hillstone E-Series is its user-friendliness."
"The installation is easy, we have not had any complaints from our customers."
"The most valuable features of the Hillstone E-Series are its hardware capacity, innovation, and the throughput that the hardware can take."
"Very reliable solution with good scalability and straightforward implementation."
"Provides privacy and cryptography for my network communication."
"For us, it's important that OpenVPN Access Server is cheap and that we get to use it ourselves."
"If you're looking for a solid solution to establish VPN tunnels between sites, be sure to put OpenVPN on your list to check out."
"Simple to install and maintain, easy to find documentation or help in Google."
"OpenVPN Access Server has positively impacted our organization by providing a high, reliable, stable environment, especially for remote work."
"The solution is reliable, easy to use, and open source. It's free at no cost."
"We were surprised how straightforward it was to integrate with AWS."
"OpenVPN Access Server has positively impacted my organization mainly through improved security for myself."
 

Cons

"The room for improvement would be the SSL VPN license cost."
"Support from Hillstone E-Series has a shortcoming that needs improvement."
"The tool provides just a general report. It does not provide a granular report. Hence, the tool should work on its reporting feature."
"The licensing model is very complex with many subcategories of licenses you can purchase. They could make it more simplified for customers to understand."
"I am not sure if this solution offers active directory integration. Adding that feature will definitely be an advantage."
"The tool only had some memory-related problems."
"The solution doesn't have a web proxy built into the system like Sophos. This is something they should work to change."
"The current usage reporting is very basic. I would like to be able to access more granular data."
"The plan for OpenVPN Access Server could be improved. When adding new people, better plans for startups would be beneficial."
"There is always room for more security features."
"​There was one annoying feature where we had to disable and enable the user. I cannot remember what it was exactly, but I think it was for a password lockout. It would be nice if there was a checkbox, or something, in the web interface to allow you to unlock a user whose password was locked."
"One improvement I would like to see in OpenVPN is better adaptability in certain geographical areas."
"The product’s connectivity is very slow. It could be faster."
"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."
"There could be an easier way to set up the solution. However, if you use the provided information that comes with the solution there should not be a problem."
 

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."
"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."
"Hillstone's pricing is economical and neither very high nor very low."
"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."
"One of the valuable features of OpenVPN is that it is free for a single user."
"I don't need to pay for its license since it is an open-source tool."
"It is free, you buy support."
"Begin with the community version and upgrade to paid one if the need arises."
"OpenVPN is an open-source solution. If the solution is used for personal use it is free. For non-personal use, the solution can be expensive."
"At one point I had to purchase addition connection licenses. I was very pleased with the pricing and licensing; so much easier than navigating the confusing jungle of Microsoft and Cisco licensing and pricing. That alone made the product a delight to manage."
"Open VPN Access Server is open-source and free of charge."
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Top Industries

By visitors reading reviews
Construction Company
16%
Comms Service Provider
11%
Financial Services Firm
10%
Manufacturing Company
10%
Comms Service Provider
11%
Outsourcing Company
11%
Computer Software Company
10%
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

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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.
914,351 professionals have used our research since 2012.