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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
24th
Average Rating
9.0
Reviews Sentiment
7.7
Number of Reviews
10
Ranking in other categories
Firewalls (41st), 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 October 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 9.6%, down from 15.4% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Enterprise Infrastructure VPN Mindshare Distribution
ProductMindshare (%)
OpenVPN Access Server9.6%
Hillstone E-Series1.9%
Other88.5%
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."
"Five out of five ROI."
"Stability-wise, I rate the solution a ten out of ten."
"The most valuable features of the Hillstone E-Series are its hardware capacity, innovation, and the throughput that the hardware can take."
"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."
"Very reliable solution with good scalability and straightforward implementation."
"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 most valuable feature of the Hillstone E-Series is its user-friendliness."
"OpenVPN Access Server met that need well."
"What I appreciate the most about OpenVPN Access Server is that it's very easy to set up."
"Security is the most valuable feature."
"In my opinion, the most useful function in OpenVPN Access Server is the user management feature, which I regularly use to manage the users and the concurrent sessions."
"The solution is reliable, easy to use, and open source. It's free at no cost."
"We use OpenVPN Access Server to connect from site to site from our data center to our customer site and to dial and access our VPN to our network."
"The best features of OpenVPN Access Server are that it can integrate with any software and it can work on any platform."
"The best features OpenVPN Access Server offers is whitelisting members in my company who have joined recently; it is really easy to use, and it is really easy to set up OpenVPN Access Server as an internal app."
 

Cons

"The licensing model is very complex with many subcategories of licenses you can purchase. They could make it more simplified for customers to understand."
"Having frequent live webinars on a monthly basis would really help."
"The tool needs to improve its price."
"The tool provides just a general report. It does not provide a granular report. Hence, the tool should work on its reporting feature."
"Support from Hillstone E-Series has a shortcoming that needs improvement."
"The tool only had some memory-related problems."
"SSL VPN license cost is not cheap."
"The solution doesn't have a web proxy built into the system like Sophos. This is something they should work to change."
"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."
"When there are too many concurrent users trying to connect at the same time, there may be a bit of a bottleneck."
"The lack of an official Linux client is a clear gap."
"The connection speed utilizing OpenVPN Access Server is notably slow, with high latency affecting performance."
"The logs should be made easier to read."
"There could be an easier way to set up the solution."
"I rate the price for OpenVPN as overpriced at the moment."
"The main area for improvement is the pricing model, as the concurrent user license gets expensive quickly as our organization grows."
 

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 cost per year for licensing, and hardware, is approximately $850 for the basic plan."
"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 Pro Edition has a reasonable price per user."
"The solution was free of charge."
"It is free, you buy support."
"I don't need to pay for its license since it is an open-source tool."
"With regard to setup cost, pricing and/or licensing, the simple answer is that you'll need to set aside some time to learn it and experiment with it."
"OpenVPN Access Server was free for students. I don't know if you have to pay for an advanced version."
"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 solution is free of cost."
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Top Industries

By visitors reading reviews
Construction Company
16%
Comms Service Provider
12%
Outsourcing Company
10%
Financial Services Firm
10%
Outsourcing Company
11%
Comms Service Provider
11%
Computer Software Company
10%
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

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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.
917,382 professionals have used our research since 2012.