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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
20th
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 August 2026, in the Enterprise Infrastructure VPN category, the mindshare of Hillstone E-Series is 1.9%, up from 0.7% compared to the previous year. The mindshare of OpenVPN Access Server is 11.7%, down from 13.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Enterprise Infrastructure VPN Mindshare Distribution
ProductMindshare (%)
OpenVPN Access Server11.7%
Hillstone E-Series1.9%
Other86.4%
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 Hillstone E-Series is its user-friendliness."
"If an organization is not looking for a web proxy, it's a very, very good product."
"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 installation is easy, we have not had any complaints from our customers."
"With Hillstone, TCO and ROI are very good, it's an easy sale."
"The most valuable feature of the solution is the ransomware protection that the tool offers."
"Stability-wise, I rate the solution a ten out of ten."
"Very reliable solution with good scalability and straightforward implementation."
"It was very easy to set up users."
"The best thing is that it is open source and free of cost."
"It allows our employees to work remotely across Mac, Windows, and Linux platforms."
"The best features of OpenVPN Access Server are that it can integrate with any software and it can work on any platform."
"Simple to install and maintain, easy to find documentation or help in Google."
"The setup is easy."
"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."
"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

"The current usage reporting is very basic. I would like to be able to access more granular data."
"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."
"Having frequent live webinars on a monthly basis would really help."
"Support from Hillstone E-Series has a shortcoming that needs improvement."
"The tool needs to improve its price."
"The solution doesn't have a web proxy built into the system like Sophos. This is something they should work to change."
"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 lack of an official Linux client is a clear gap."
"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."
"Open VPN Access Server could be more user-friendly."
"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."
"The logs should be made easier to read."
"The product is fully customized through configuration files, which is all achieved through manual data entry."
"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."
"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."
"The Pro Edition has a reasonable price per user."
"I don't need to pay for its license since it is an open-source tool."
"The licensing has a fixed pricing."
"The product offers yearly as well as monthly subscription plans. It has moderate pricing."
"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."
"OpenVPN Access Server is free and open source."
"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."
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Top Industries

By visitors reading reviews
Construction Company
17%
Comms Service Provider
11%
Financial Services Firm
10%
Manufacturing Company
8%
Computer Software Company
12%
Comms Service Provider
12%
Financial Services Firm
8%
Outsourcing Company
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?
In terms of specific outcomes or metrics with OpenVPN Access Server, we have saved time because otherwise, we need to purchase other software and their software takes a great deal of time in terms ...
What needs improvement with OpenVPN Access Server?
OpenVPN Access Server can be improved by addressing the issue we faced with a single VPN server since it does not allow the creation of replicas without a load balancer, which we found to be an ava...
 

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: August 2026.
911,493 professionals have used our research since 2012.