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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
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 initial setup was straightforward. It only took a few hours to deploy."
"If an organization is not looking for a web proxy, it's a very, very good product."
"The most valuable feature of the solution is the ransomware protection that the tool offers."
"Very reliable solution with good scalability and straightforward implementation."
"Stability-wise, I rate the solution a ten out of ten."
"The most valuable feature of the Hillstone E-Series is its user-friendliness."
"Five out of five ROI."
"The installation is easy, we have not had any complaints from our customers."
"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."
"I have found the stability to be good."
"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."
"This server allows you to connect to a network that does not have any public IP addresses."
"It can securely do remote product updates, push out product updates; just like on our LAN, it's a virtual private network and we just push across our updates."
"I would recommend this solution to other people."
"OpenVPN Access Server is strong and quite good, and the cross-platform support is excellent, the integration with enterprise-level authentication is very good, and the scalability part is quite strong, providing improved security, better than other tools in the market, and we can utilize it in different ways while integrating with other cloud platforms or on-premises, so in that field, it stands out from others and improved our security."
"Two-factor authentication allows us to not force frequent password changes."
 

Cons

"I am not sure if this solution offers active directory integration. Adding that feature will definitely be an advantage."
"The current usage reporting is very basic. I would like to be able to access more granular data."
"Having frequent live webinars on a monthly basis would really help."
"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."
"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 room for improvement would be the SSL VPN license cost."
"There could be an easier way to set up the solution."
"There is always room for more security features."
"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."
"My impression of the connection speed using OpenVPN Access Server is that, compared to other VPN solutions, OpenVPN Access Server is a little bit slow, but it is very safe and always connects."
"I'd like to have more control over the users when they are accessing the network."
"There are certain shortcomings in the product's stability that need improvement."
"OpenVPN Access Server could be improved in several areas. The encryption strength is inevitably lower compared with the latest technologies, and when I try to add features like two-factor authentication, the needed plugins and so on often are not really available or do not fit well."
"The concurrent user licenses get expensive pretty quickly as your organization grows, so more flexible pricing options would be a huge plus."
 

Pricing and Cost Advice

"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."
"Hillstone's pricing is economical and neither very high nor very low."
"The cost per year for licensing, and hardware, is approximately $850 for the basic plan."
"OpenVPN is a free and open-source solution."
"The price point is fantastic since it is free."
"OpenVPN Access Server is free and open source."
"Open VPN Access Server is open-source and free of charge."
"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."
"I don't need to pay for its license since it is an open-source tool."
"The product offers yearly as well as monthly subscription plans. It has moderate pricing."
"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
17%
Comms Service Provider
13%
Financial Services Firm
10%
Manufacturing Company
8%
Computer Software Company
12%
Comms Service Provider
11%
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.
910,409 professionals have used our research since 2012.