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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
24th
Average Rating
9.0
Reviews Sentiment
7.7
Number of Reviews
10
Ranking in other categories
Firewalls (41st), 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 October 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 9.6%, down from 15.4% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Enterprise Infrastructure VPN Mindshare Distribution
ProductMindshare (%)
OpenVPN Access Server9.6%
Hillstone E-Series1.9%
Other88.5%
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

"Very reliable solution with good scalability and straightforward implementation."
"If an organization is not looking for a web proxy, it's a very, very good product."
"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 secure connectivity from a remote location to their offices or their servers."
"The initial setup was straightforward. It only took a few hours to deploy."
"Stability-wise, I rate the solution a ten out of ten."
"The most valuable feature of the solution is the ransomware protection that the tool offers."
"I am impressed with the application filtering feature."
"We use the solution to access remote services."
"The most valuable features of the OpenVPN Access Server are the ease of use and integration with different platforms, such as Android and Windows. I can use the solution on my desktop and mobile devices. Additionally, the solution is secure."
"The initial setup phase of OpenVPN Access Server was fine, and it was easy."
"In my opinion, the most useful function in OpenVPN Access Server is the user management feature, which I regularly use to manage the users and the concurrent sessions."
"The price point is fantastic since it is free."
"I like that it's easy to use, easy to download, and not hard to manage."
"It is very easy to look at the quality of the connection and the bandwidth and do an investigation if there are problems on the network."
"I have set the default routes to the VPN server so that all traffic is encrypted."
 

Cons

"The room for improvement would be the SSL VPN license cost."
"I am not sure if this solution offers active directory integration. Adding that feature will definitely be an advantage."
"Having frequent live webinars on a monthly basis would really help."
"Support from Hillstone E-Series has a shortcoming that needs improvement."
"SSL VPN license cost is not cheap."
"The tool needs to improve its price."
"The tool only had some memory-related problems."
"The licensing model is very complex with many subcategories of licenses you can purchase. They could make it more simplified for customers to understand."
"There is always room for more security features."
"When there are too many concurrent users trying to connect at the same time, there may be a bit of a bottleneck."
"The stability of the OpenVPN Access Server has room for improvement."
"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."
"The product’s connectivity is very slow. It could be faster."
"I rate the price for OpenVPN as overpriced at the moment."
"Open VPN Access Server could be more user-friendly."
"I would like to see continued advanced security implementation."
 

Pricing and Cost Advice

"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."
"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."
"Hillstone's pricing is economical and neither very high nor very low."
"The Pro Edition has a reasonable price per user."
"It is an open-source solution, so we don't pay for anything."
"OpenVPN Access Server is free and open source."
"The product offers yearly as well as monthly subscription plans. It has moderate pricing."
"The solution is free of cost."
"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."
"OpenVPN Access Server was free for students. I don't know if you have to pay for an advanced version."
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Top Industries

By visitors reading reviews
Construction Company
16%
Comms Service Provider
12%
Outsourcing Company
10%
Manufacturing Company
9%
Outsourcing Company
11%
Comms Service Provider
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.
919,894 professionals have used our research since 2012.