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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
23rd
Average Rating
9.2
Reviews Sentiment
7.7
Number of Reviews
10
Ranking in other categories
Firewalls (39th), SSL VPN (11th)
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 January 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 13.9%, down from 14.6% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Enterprise Infrastructure VPN Market Share Distribution
ProductMarket Share (%)
OpenVPN Access Server13.9%
Hillstone E-Series1.3%
Other84.8%
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

"The initial setup was straightforward. It only took a few hours to deploy."
"Five out of five ROI."
"Stability-wise, I rate the solution a ten out of ten."
"Very reliable solution with good scalability and straightforward implementation."
"The most valuable feature of the solution is the ransomware protection that the tool offers."
"The most valuable feature of the Hillstone E-Series is its user-friendliness."
"Working with the Hillstone E-Series has, from a remote perspective, allowed me to give my clients a secure connectivity."
"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."
"It is open source and therefore affordable for small projects."
"The solution is reliable, easy to use, and open source. It's free at no cost."
"The product provides secure internet connections and helps with faster downloads."
"What I appreciate the most about OpenVPN Access Server is that it's very easy to set up."
"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."
"The initial setup phase of OpenVPN Access Server was fine, and it was easy."
"The most valuable thing about OpenVPN Access Server is its ease of use."
"Provided the easiest UX for our end-users and had the greatest interoperability with all the operating systems we used, including but not limited to: iOS, Android, OS X, Windows, and Linux."
 

Cons

"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."
"The tool only had some memory-related problems."
"SSL VPN license cost is not cheap."
"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."
"The tool needs to improve its price."
"Support from Hillstone E-Series has a shortcoming that needs improvement."
"The solution can be more compatible with different operating systems."
"The solution should provide a faster connection, and its security could be improved."
"If there was a Graphical User Interface to help streamline the configuration, I believe OpenVPN would probably venture more into the non-geek realm as it were."
"​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."
"The product’s connectivity is very slow. It could be faster."
"It could be faster. It could also be more stable."
"The interface could be a little bit better in future iterations."
"Needs a better GUI."
 

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 licensing model is very complex with many subcategories of licenses you can purchase. They could make it more simplified for customers to understand."
"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."
"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."
"I don't need to pay for its license since it is an open-source tool."
"Open VPN Access Server is open-source and free of charge."
"Begin with the community version and upgrade to paid one if the need arises."
"One of the valuable features of OpenVPN is that it is free for a single user."
"The product offers yearly as well as monthly subscription plans. It has moderate pricing."
"OpenVPN Access Server was free for students. I don't know if you have to pay for an advanced version."
"It is an open-source solution, so we don't pay for anything."
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Top Industries

By visitors reading reviews
Comms Service Provider
15%
Financial Services Firm
8%
Manufacturing Company
7%
Educational Organization
7%
Computer Software Company
17%
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.
879,455 professionals have used our research since 2012.