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Hillstone E-Series vs OpenVPN Access Server comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Dec 14, 2025

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
24th
Average Rating
9.2
Reviews Sentiment
7.7
Number of Reviews
10
Ranking in other categories
Firewalls (39th), SSL VPN (9th)
OpenVPN Access Server
Ranking in Enterprise Infrastructure VPN
2nd
Average Rating
8.4
Reviews Sentiment
6.1
Number of Reviews
52
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of February 2026, in the Enterprise Infrastructure VPN category, the mindshare of Hillstone E-Series is 1.3%, up from 0.4% compared to the previous year. The mindshare of OpenVPN Access Server is 13.4%, down from 14.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Enterprise Infrastructure VPN Market Share Distribution
ProductMarket Share (%)
OpenVPN Access Server13.4%
Hillstone E-Series1.3%
Other85.3%
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.
Girraj Godia - PeerSpot reviewer
Devops Engineer at Emergent
Has improved internal app access by allowing secure user onboarding and simplified network whitelisting
The plan for OpenVPN Access Server could be improved. When adding new people, better plans for startups would be beneficial. I'm working in a startup and sometimes people think we should take the enterprise plan or not. If there was a dedicated plan for startups, it would be really helpful. For instance, providing store credit for OpenVPN Access Server through a startup program, similar to YC's program which gives credit to new startups. UI-wise, OpenVPN Access Server is easy to manage, but the overall overview dashboard in the admin portal could be improved. Currently, you have to go through dropdowns to find where to add users or whitelist IPs. Creating an onboarding dashboard where an admin person can find these things easily would be beneficial.

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."
"Five out of five ROI."
"Working with the Hillstone E-Series has, from a remote perspective, allowed me to give my clients a secure connectivity."
"The most valuable feature of the solution is the ransomware protection that the tool offers."
"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."
"Very reliable solution with good scalability and straightforward implementation."
"I am impressed with the application filtering feature."
"The best features OpenVPN Access Server offers is whitelisting members in my company who have joined recently; it is really easy to use, and it is really easy to set up OpenVPN Access Server as an internal app."
"It was very easy to set up users."
"It is open source and therefore affordable for small projects."
"Two-factor authentication allows us to not force frequent password changes."
"I would recommend this solution to other people."
"The features I have found to be most valuable are the levels of encryption I can enact and the compression I can apply to improve throughput."
"We were surprised how straightforward it was to integrate with AWS."
"OpenVPN Access Server allows us to establish a secure connection to an IP address that would otherwise be inaccessible without using a VPN."
 

Cons

"The tool needs to improve its price."
"SSL VPN license cost is not cheap."
"The tool only had some memory-related problems."
"Support from Hillstone E-Series has a shortcoming that needs improvement."
"Having frequent live webinars on a monthly basis would really help."
"The current usage reporting is very basic."
"I am not sure if this solution offers active directory integration. Adding that feature will definitely be an advantage."
"The tool provides just a general report. It does not provide a granular report. Hence, the tool should work on its reporting feature."
"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."
"The stability of the solution could improve."
"One improvement I would like to see in OpenVPN is better adaptability in certain geographical areas."
"The logs should be made easier to read."
"They should make the solution more secure by adding some firewall functionalities."
"The server configuration file needs to be improved, it's the biggest problem in the configuration process."
"I would like to see a simpler interface, so that we can make the connection between the local network using the LAN IP."
"I would like to see a GUI or Web UI to manage users. Today these features are in the Pro Edition or are done by scripts."
 

Pricing and Cost Advice

"The cost per year for licensing, and hardware, is approximately $850 for the basic plan."
"Hillstone's pricing is economical and neither very high nor very low."
"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 licensing model is very complex with many subcategories of licenses you can purchase. They could make it more simplified for customers to understand."
"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."
"The product offers yearly as well as monthly subscription plans. It has moderate pricing."
"I don't need to pay for its license since it is an open-source tool."
"One of the valuable features of OpenVPN is that it is free for a single user."
"OpenVPN Access Server was free for students. I don't know if you have to pay for an advanced version."
"The licensing has a fixed pricing."
"The solution is free of cost."
"It is free, you buy support."
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Top Industries

By visitors reading reviews
Comms Service Provider
16%
Financial Services Firm
10%
Manufacturing Company
7%
Educational Organization
7%
Computer Software Company
14%
Comms Service Provider
12%
Manufacturing Company
6%
Financial Services Firm
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business9
Midsize Enterprise1
By reviewers
Company SizeCount
Small Business31
Midsize Enterprise7
Large Enterprise14
 

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 do you like most about OpenVPN Access Server?
OpenVPN Access Server is a simple and easy-to-use solution that I can use myself without anybody's help.
What is your experience regarding pricing and costs for OpenVPN Access Server?
The experience with pricing, setup cost, and licensing for OpenVPN Access Server is really good, not that expensive. I am easily able to add new users from the OpenVPN Access Server official websit...
 

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: December 2025.
881,360 professionals have used our research since 2012.