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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
22nd
Average Rating
9.0
Reviews Sentiment
7.7
Number of Reviews
10
Ranking in other categories
Firewalls (38th), SSL VPN (10th)
OpenVPN Access Server
Ranking in Enterprise Infrastructure VPN
1st
Average Rating
8.4
Reviews Sentiment
6.5
Number of Reviews
59
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of June 2026, in the Enterprise Infrastructure VPN category, the mindshare of Hillstone E-Series is 1.8%, up from 0.6% compared to the previous year. The mindshare of OpenVPN Access Server is 11.9%, down from 13.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Enterprise Infrastructure VPN Mindshare Distribution
ProductMindshare (%)
OpenVPN Access Server11.9%
Hillstone E-Series1.8%
Other86.3%
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.
Fedir Plotnikov - PeerSpot reviewer
Senior Cloud Infrastructure Engineer at Globant
User management has simplified internal VPN access and now provides clear visibility and control
I do not use any role defining features because it is a really small organization, so it wasn't required, but it is there if needed. I have seen OpenVPN Access Server integrations such as LDAP, RADIUS, PAM, and SAML, but again, due to the size of the company, it wasn't necessary and we didn't have it inside the company. However, it was nice that it is already embedded inside. We haven't used much in terms of integrations with OpenVPN Access Server, so it's hard to say. We only used basic features there. My advice for others looking to implement OpenVPN Access Server is that it is at least worth trying if you need a fast and easy implementation solution without technical overhead and you just need VPN access, which is supported by all operating systems and mobile operating system vendors. It is definitely worth a try. OpenVPN Access Server was purchased directly from the website, not on the AWS marketplace or through a partner purchase. I would rate this product an overall eight out of ten.

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."
"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."
"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 most valuable features of the Hillstone E-Series are its hardware capacity, innovation, and the throughput that the hardware can take."
"The initial setup was straightforward. It only took a few hours to deploy."
"The installation is easy, we have not had any complaints from our customers."
"Five out of five ROI."
"With Hillstone, TCO and ROI are very good, it's an easy sale."
"A valuable feature for us is its ability to see the new Citrix server as a local server within the company. And it allows us to test abroad."
"What I appreciate the most about OpenVPN Access Server is that it's very easy to set up."
"Open VPN Access Server is fully stable."
"The solution is reliable, easy to use, and open source. It's free at no cost."
"The initial setup phase of OpenVPN Access Server was fine, and it was easy."
"The solution is user-friendly and easy to implement."
"Provides privacy and cryptography for my network communication."
"OpenVPN Access Server met that need well."
 

Cons

"The room for improvement would be the SSL VPN license cost."
"The tool only had some memory-related problems."
"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 solution doesn't have a web proxy built into the system like Sophos. This is something they should work to change."
"I am not sure if this solution offers active directory integration. Adding that feature will definitely be an advantage."
"The tool needs to improve its price."
"The current usage reporting is very basic. I would like to be able to access more granular data."
"The connections could be faster and more stable."
"The stability had room for improvement."
"For an infrastructure product, that is not acceptable."
"I find that connection speed with OpenVPN Access Server loses in comparison to WireGuard, which is very fast."
"The high availability deployment is not very straightforward. They can make it simpler. OpenVPN does not support some of the additional protocols that Pulse Secure and Cisco AnyConnect support. They can include support for these additional protocols."
"I would like to see a simpler interface, so that we can make the connection between the local network using the LAN IP."
"One improvement I would like to see in OpenVPN is better adaptability in certain geographical areas."
"​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."
 

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."
"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 Pro Edition has a reasonable price per user."
"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 product offers yearly as well as monthly subscription plans. It has moderate pricing."
"The solution was free of charge."
"It is free, you buy support."
"OpenVPN Access Server was free for students. I don't know if you have to pay for an advanced version."
"One of the valuable features of OpenVPN is that it is free for a single user."
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Top Industries

By visitors reading reviews
Construction Company
13%
Financial Services Firm
11%
Comms Service Provider
11%
Manufacturing Company
10%
Comms Service Provider
12%
Computer Software Company
11%
Financial Services Firm
8%
University
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business9
Midsize Enterprise1
By reviewers
Company SizeCount
Small Business36
Midsize Enterprise9
Large Enterprise17
 

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?
Regarding pricing for OpenVPN Access Server, I don't remember all the details exactly, but I believe it is really flexible and even provides something like free trials, so anyone can try it. It was...
What needs improvement with OpenVPN Access Server?
I find that connection speed with OpenVPN Access Server loses in comparison to WireGuard, which is very fast. However, compared to any other solution, they are pretty much the same, and they do not...
 

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.
900,228 professionals have used our research since 2012.