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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 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."
"The most valuable features of the Hillstone E-Series are its hardware capacity, innovation, and the throughput that the hardware can take."
"With Hillstone, TCO and ROI are very good, it's an easy sale."
"The installation is easy, we have not had any complaints from our customers."
"I am impressed with the application filtering feature."
"If an organization is not looking for a web proxy, it's a very, very good product."
"Stability-wise, I rate the solution a ten out of ten."
"There is support for multi-factor authentication."
"OpenVPN Access Server has positively impacted my organization mainly through improved security for myself."
"Once you set it up correctly, it works and continues to work reliably."
"Overall, OpenVPN Access Server has positively impacted our organization by giving us a highly reliable, stable environment for remote work."
"OpenVPN Access Server is a simple and easy-to-use solution that I can use myself without anybody's help."
"What I appreciate the most about OpenVPN Access Server is that it's very easy to set up."
"The initial setup was easy."
"OpenVPN Access Server has positively impacted our organization by giving us a highly reliable, stable environment for remote work."
 

Cons

"The current usage reporting is very basic. I would like to be able to access more granular data."
"The tool provides just a general report. It does not provide a granular report. Hence, the tool should work on its reporting feature."
"SSL VPN license cost is not cheap."
"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."
"Support from Hillstone E-Series has a shortcoming that needs improvement."
"Having frequent live webinars on a monthly basis would really help."
"I am not sure if this solution offers active directory integration. Adding that feature will definitely be an advantage."
"I think OpenVPN Access Server's setup can be just one click; currently, it takes multiple steps, and when you forget the admin password, you are locked in."
"There is always room for more security features."
"The connection speed utilizing OpenVPN Access Server is notably slow, with high latency affecting performance."
"When there are too many concurrent users trying to connect at the same time, there may be a bit of a bottleneck."
"I have not seen a return on investment in terms of fewer employees needed, money saved, or time saved."
"The main area for OpenVPN Access Server improvement is its pricing model, as the concurrent user license gets expensive quickly as the organization grows, so more flexible pricing options would be a huge plus for AVIARC."
"It would be nice with all these features, if they could send some examples of each one; just small sample scripts to look at and say, "Oh okay, I could expand on this." That would help us a lot."
"This solution should improve the connection speed and the user interface. The stability of this solution should be improved as well."
 

Pricing and Cost Advice

"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 licensing model is very complex with many subcategories of licenses you can purchase. They could make it more simplified for customers to understand."
"OpenVPN Access Server was free for students. I don't know if you have to pay for an advanced version."
"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."
"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."
"OpenVPN Access Server is a cheap corporate solution."
"OpenVPN is a free and open-source solution."
"The solution was free of charge."
"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."
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Top Industries

By visitors reading reviews
Construction Company
16%
Comms Service Provider
12%
Financial Services Firm
10%
Outsourcing Company
10%
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.
913,806 professionals have used our research since 2012.