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Hillstone E-Series vs OpenVPN Access Server comparison

 

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
70
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

"Stability-wise, I rate the solution a ten out of ten."
"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."
"I am impressed with the application filtering feature."
"The installation is easy, we have not had any complaints from our customers."
"If an organization is not looking for a web proxy, it's a very, very good product."
"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."
"It is open-source and free to use."
"It is much easier to scale and troubleshoot compared to regular Windows-based VPN solutions or PPTP daemon."
"I like that it's easy to use, easy to download, and not hard to manage."
"We use the solution to access remote services."
"OpenVPN Access Server has positively impacted my organization by supporting remote work and improving security since users must authenticate through the VPN first before accessing services such as RDP and SSH, which reduces our attack surface."
"The compatibility with almost any Linux operating system, and how easy it is to write scripts and generate keys for people to use and log in. I found it easy to deploy quickly."
"The most valuable feature is that I can access my local network remotely and avoid doing all the port forwarding and redirections, and so on."
"It is a lightweight, easy to setup solution."
 

Cons

"The room for improvement would be the SSL VPN license cost."
"Having frequent live webinars on a monthly basis would really help."
"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 tool needs to improve its price."
"SSL VPN license cost is not cheap."
"The tool provides just a general report. It does not provide a granular report. Hence, the tool should work on its reporting feature."
"The current usage reporting is very basic. I would like to be able to access more granular data."
"The tool only had some memory-related problems."
"It is not scalable."
"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."
"It should automate our processes."
"The logs should be made easier to read."
"OpenVPN could improve in centralized management and enhance the GUI configuration steps."
"There could be an easier way to set up the solution."
"For an infrastructure product, that is not acceptable."
"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."
 

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 is a free and open-source solution."
"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."
"Begin with the community version and upgrade to paid one if the need arises."
"It is an open-source solution, so we don't pay for anything."
"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."
"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."
"The Pro Edition has a reasonable price per user."
"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."
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Top Industries

By visitors reading reviews
Construction Company
16%
Financial Services Firm
11%
Comms Service Provider
11%
Manufacturing Company
9%
Computer Software Company
13%
Comms Service Provider
11%
Financial Services Firm
8%
University
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business9
Midsize Enterprise1
By reviewers
Company SizeCount
Small Business43
Midsize Enterprise14
Large Enterprise22
 

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?
I use it for a client, so I do not have much information regarding the pricing, setup cost, and licensing. But from what I have gathered, the pricing and setup costs are a little more expensive com...
What needs improvement with OpenVPN Access Server?
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 ar...
 

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: June 2026.
907,787 professionals have used our research since 2012.