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KerioControl vs OPNsense comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Sep 16, 2024

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

Fortinet FortiGate
Sponsored
Ranking in Firewalls
2nd
Average Rating
8.4
Reviews Sentiment
7.2
Number of Reviews
318
Ranking in other categories
Software Defined WAN (SD-WAN) Solutions (1st), WAN Edge (1st)
KerioControl
Ranking in Firewalls
25th
Average Rating
8.2
Reviews Sentiment
7.0
Number of Reviews
57
Ranking in other categories
Intrusion Detection and Prevention Software (IDPS) (13th), Unified Threat Management (UTM) (10th)
OPNsense
Ranking in Firewalls
3rd
Average Rating
8.2
Reviews Sentiment
7.2
Number of Reviews
39
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of March 2025, in the Firewalls category, the mindshare of Fortinet FortiGate is 20.8%, up from 17.8% compared to the previous year. The mindshare of KerioControl is 1.5%, up from 0.9% compared to the previous year. The mindshare of OPNsense is 12.8%, down from 17.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Firewalls
 

Featured Reviews

EhabAli - PeerSpot reviewer
Efficient, user-friendly, and affordable
In the past, NSS Labs was utilized to test files and verify the numbers and datasheets. It would be beneficial to have an organization or testing lab that can verify the numbers in our datasheets since changes are frequently made, which can be inconvenient for review. For instance, when comparing different competitors such as Forcepoint, Palo Alto, and Check Point, the throughput or numbers in the datasheet may be lower than the actual numbers. Conversely, Fortinet typically reports very high numbers, but they cannot be replicated in the real world. Therefore, it would be advantageous for them to partner with a neutral testing organization such as NSS Labs to validate these numbers, thus providing more credibility and comfort to everyone regarding the accuracy of the datasheets. For the migration, everyone has a firewall in use and I am selling Fortinet. Typically, I am replacing another firewall. Previously, there was a tool available to convert configurations from one firewall, such as Palo Alto, to Fortinet, but this tool is no longer free. If it could be made free again, it would be very beneficial. This tool shows a lot of promise and is very good. Making it free would help many companies deliver their products in a more efficient and integrated way. It would also be more valuable to include the tool with the firewall package or license instead of having to pay extra for it. Paying extra puts more pressure on small companies to deliver the firewall and complete the configuration, especially if they have hundreds or thousands of policies. It's very painful to move through these policies line by line. The stability has room for improvement. When it comes to Secure SD-WAN, everything is fine. They are going the right way. SD-WAN is very promising. They can provide the SD-WAN solution separately, but they will not take this approach because even the smallest firewall can support the features, so there is no need to have a separate service or appliance. They are following the right steps, and there is nothing to be improved. Feature-wise, I'm really satisfied with the new release, and the features they have added. For now, it's fine.
Constantnos Achilleos - PeerSpot reviewer
Leveraging geo-tagging and web filtering for enhanced network security
The solution is used for site-to-site VPN connections and it is valued for its cost efficiency and easy connectivity. It is especially beneficial for multi-site VPNs and is used in about fifteen different components KerioControl has provided a financial benefit as it allows purchasing one license…
Eddy Ramirez - PeerSpot reviewer
Good interface and firewall capabilities and overall easy to use
The security has improved as we can isolate the network. We can do attrition prevention via a tool that comes with the solution. We can have a VPN solution in place for those that work from home, outside the network, in a secure manner. We also like that it offers good authentication. It offers radius-based authentication, which has been useful for the company. The main platform is under the Open VPN firewall. The solution has high availability. When we have different ISPs, we can actually load balance those links or actually put some priority or even classify the traffic that might go into one ISP or another.

Quotes from Members

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Pros

"It is a one box solution, which covers most of the edge device’s requirements."
"Fortinet FortiGate's most valuable features are ease of use, flexibility, and most of the configuration we can be done using the GUI. When we compare Fortinet FortiGate with other solutions the firewall policy are very easy to understand."
"We use a lot of function on the IPS and it works well for us."
"We are very happy with the general bandwidth agility we have seen from one website to another website."
"The scalability is good in Fortinet FortiGate."
"The dashboard I have found the most valuable in Fortinet FortiGate."
"The UTM feature is quite good. FortiAP is easy to deploy because both Fortigate and FortiAP are under the same brand. Otherwise, you need to do more work on the configuration."
"We can use our devices to check all of the perimeters. It secures email websites."
"Technical support is good. They respond right away."
"I love the VPN that we set up. A few of us have it on our computers so that if we leave, we can still access the stores. And we can work from home if needed. When I sign into that Kerio VPN, it links me like I'm sitting in the store. It puts me in our secure network so that I can sign on to each individual store and I can run numbers... If I have to work from home, it's so much faster than the way we used to do it."
"I am impressed with the tool's firewall filtering capacity."
"The most valuable features of Kerio Control are the IPS and traffic rules. The traffic rules are very user-friendly and the IPS is working well. Additionally, the anti-virus is effective with quick options, such as filtering."
"In terms of the comprehensiveness of the security features, it does a great job of laying out what it does. It's fairly easy to edit and research. Some of the features were turned on by our IT company and I was able to easily find other features on my own by searching for videos on the internet. I've been able to block certain websites, and content filter, as well as manage some of our bandwidth because we live stream on Sunday. I'm able to dedicate bandwidth for the encoder that goes to the internet. It always has enough bandwidth, no matter how many people are on the network. That's really helpful."
"One thing we use quite a lot, as well, is the DHCP Server, because we do a lot of work where all our devices need to have static IP addresses. Rather than going around and configuring every box, we do it all through DHCP reservations. It's easier. We've got a record of it. We can manipulate it if we need to change something or change some hardware. It's all easy. Even guys who are not used to using it can pick it up quite quickly."
"Instead of using a cloud-based product for accessing information, and putting my data at risk in the cloud and in someone else's hands, it has allowed me to use a VPN and access my data directly from a laptop when I am out in the field. That has made my life a lot easier, where I'm able to access any information I need to be able access, basically on demand, with an Internet connection. That alone has been great."
"The firewall appliance itself is the most valuable feature."
"OPNsense is highly stable."
"It's more secure and more reliable."
"OPNsense is very stable, easy to upgrade, and maintain."
"The most valuable features of OPNsense are the GUI and frequent updates."
"The DNS-level filtering is impressive for thwarting time scanners."
"The system in general is quite flexible."
"The graphic user interface is very good and it is user-friendly which makes the product easy-to-use."
"The initial implementation process is simple."
 

Cons

"We were not able to build a full-mesh VPN; however, I am not sure if this was the fault of Fortinet FortiGate."
"Technical support could be better. You don't always get the level of help you need right away."
"The way everything is set up could be easier. Currently, people need a lot of experience and knowledge to administer it and to link it to devices."
"There are some cloud-based features that could be much more flexible than they currently are."
"The Wi-Fi controller needs a lot of improvement."
"I would like some automated custom reporting."
"The graphical user interface of Fortinet's FortiGate product does not function well with text-based interfaces."
"Lacks training for new features."
"Kerio Control has just improved on their biggest problem, which was to introduce better support for high-availability requirements in production."
"The solution can be improved to create the capability for larger bandwidths that support our business needs."
"I would like to see geo-IP filtering added to the filtering rules. Incorporating these rules would be very beneficial if you have different ideas or reasons to filter, such as communication to the email server or specific websites."
"If I would suggest anything, it would be to expand on its multifactor authentication to be a little bit more user-friendly. They should do multifactor authentications for the client itself perhaps, rather than served on a webpage, in a page hijack, that might be more user-friendly, but I don't have a lot of complaints about it. It's doing its job. You have to have a certain amount of skills to configure these things anyway, the ones that we use on-site doing point-to-point, and we've been tricked up a few times with their interfaces."
"The upgrades make the network slower."
"There were certain things I didn't know about it, but I've always been able to just contact our IT company. They've been able to walk me through certain things. It was quite a monumental task to set up a public site. Support really had to help me with setting up the VLANs and walk me through it. It was not possible for me to figure that out on my own, but that's what they're here for. That could have been a little bit easier laid out."
"One of the problems we do have causes problems with the VPN. The software slows the throughput down too much. You could have a one-gigabit connection from the internet, and it slows it down to the area of upload and download is extremely slow. There's too much content filtering at that point."
"I have had a few issues with HTTPS decryption. The solution also does not show the actual user's Internet usage."
"I would like better documentation concerning the provided packages and their integration."
"OPNsense struggles to handle large volumes of voice traffic, indicating scalability issues in that specific use case."
"On the customer-side, because I'm a small business, I need a cheaper or free solution option."
"The support for OPNsense is good because we have documents available on the internet. The support could improve a little."
"pfSense has better performance and quicker updates."
"When using the solution at the beginning was difficult. There was a steep learning curve."
"They should improve IPEs for security in the future."
"The solution would not be suitable for anything large-scale."
 

Pricing and Cost Advice

"Fortinet FortiGate's price can be reduced."
"When you look at these end security systems and firewalls, these firewalls even five years ago were $50,000 or perhaps $25,000 to implement in some types of customer sites. Now we're talking about tools that are $1,000. In this case, it might have been $500 or something like that."
"The license of Fortinet FortiGate should be reduced."
"The price of FortiGate is good."
"It's a very full-featured and it's priced well solution."
"I would rate the pricing a five out of ten"
"It was worth the money overall. It's good value."
"The price of Fortinet FortiGate is affordable. Most of our customers are on a three-year license to use the solution. All the features and support are included in the price."
"Its licensing is yearly. You renew every year. Its price is all-inclusive."
"GFI has made a stupid decision regarding small office licensing. For offices where there are only three to five employees and had five years towards a five user product, they now force these customers to a 10-year user license. I really don't understand it. It's a stupid decision for the small offices who want a good solution for security because they'll probably decide to go to another product. Why should they buy something that they don't use?"
"My advice is to use your own hardware, and do not use theirs."
"It is priced low enough for entry-level, but it has the power to grow with a company without them having to replace it."
"The price is inexpensive."
"Its initial cost is less as compared to other products. It becomes a bit costly when you pay for the products that you don't use. We paid for almost all the products through subscription, but we are using only a few products. We use EndPointSecurity, Kerio Connect, WebMonitor, and LanGuard. We don't use the rest of the products."
"Licensing is easier with Kerio Control. With FortiGate, we realized the licensing is really hectic, because if you skip one year, you have to back pay that year. If you skip two years, you have to back pay two years. With Kerio Control, if a license expires, one year later you can just reactivate and go on."
"Pricing is good, but the licensing took a lot of time."
"There are no licensing costs for OPNsence."
"It's a free solution."
"I would rate the pricing three out of ten."
"I've used the free version. My computer with two network cards at home allows me to try as many different software options as I want. I did pay for the license, but it was for the Zenarmor license, which is the packet inspection tool. They use AI for packet inspection, which integrates with OPNsense and pfSense."
"It is a free solution, and when you compare it to alternatives like FortiGate, which is quite powerful but also costly, the value becomes evident."
"Its pricing is unbeatable in comparison to other firewalls. You can have a small instance that could be €80 a month with the hardware underneath. Azure Firewall and FortiGate are out of the question at this price. If you are on a public cloud, you need the underlying infrastructure. Other than that, there is no additional cost. If you have it on-prem, you have to buy the server or the appliance. The hardware cost is replaced with the infrastructure cost in the cloud. You also have costs for the public IPs and underlying VMs, but that's not related to OPNsense. It would be the same for a FortiGate deployment on Azure. You need a FortiGate license, and you need the underlying infrastructure that scales up depending on your needs."
"It's not expensive."
"It is not an expensive product. Basically, I deployed it because it was the fastest solution to satisfy our needs in open source."
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Top Industries

By visitors reading reviews
Educational Organization
22%
Computer Software Company
14%
Comms Service Provider
7%
Manufacturing Company
6%
Computer Software Company
22%
Financial Services Firm
9%
Comms Service Provider
9%
Media Company
8%
Computer Software Company
16%
Comms Service Provider
13%
Government
7%
Educational Organization
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
 

Questions from the Community

Which is the better NGFW: Fortinet Fortigate or Cisco Firepower?
When you compare these firewalls you can identify them with different features, advantages, practices and usage a...
What is the biggest difference between Sophos XG and FortiGate?
From my experience regarding both the Sophos and FortiGate firewalls, I personally would rather use FortiGate. I know...
What are the biggest technical differences between Sophos UTM and Fortinet FortiGate?
As a solution, Sophos UTM offers a lot of functionality, it scales well, and the stability and performance are quite ...
What do you like most about KerioControl?
The solution provides feasibility regarding cyber privacy.
What is your experience regarding pricing and costs for KerioControl?
KerioControl offers good pricing as one license covers all features needed without extra payment. The price for the p...
What needs improvement with KerioControl?
The logs could be improved for better clarity. It is difficult to understand when there is a threat attack, and handl...
What is the difference between PfSense and OPNsense?
Two of the most common and well recognized firewalls, PfSense and OPNsense both support site-to-site IPsec VPN and cl...
What do you like most about OPNsense?
What I like the most about OPNsense is that it offers an easy-to-use dashboard for device management and control.
What is your experience regarding pricing and costs for OPNsense?
I consider the pricing of OPNsense to be high when compared with other market products. However, as a free firewall p...
 

Also Known As

FortiGate 60b, FortiGate 60c, FortiGate 80c, FortiGate 50b, FortiGate 200b, FortiGate 110c, FortiGate, Fortinet Firewall
No data available
No data available
 

Overview

 

Sample Customers

Amazon Web Services, Microsoft, IBM, Cisco, Dell, HP, Oracle, Verizon, AT&T, T-Mobile, Sprint, Vodafone, Orange, BT Group, Telstra, Deutsche Telekom, Comcast, Time Warner Cable, CenturyLink, NTT Communications, Tata Communications, SoftBank, China Mobile, Singtel, Telus, Rogers Communications, Bell Canada, Telkom Indonesia, Telkom South Africa, Telmex, Telia Company, Telkom Kenya
Triton Technical, McDonald's
1. Deciso B.V. 2. iXsystems, Inc.  3. EuroBSDCon  4. Netgate  5. Claranet  6. Voleatech  7. Open Systems AG  8. Securebit AG  9. Proxmox Server Solutions GmbH  10. AVM Computersysteme Vertriebs GmbH  Additional customers include: T-Systems International GmbH, Deutsche Telekom AG, Vodafone GmbH, 1&1 IONOS SE, OVHcloud, Hetzner Online GmbH, Strato AG, PlusServer GmbH, Host Europe GmbH, United Internet AG, 1&1 Versatel Deutschland GmbH, QSC AG, Bechtle AG, Cancom SE, Computacenter AG & Co. oHG, T-Systems Multimedia Solutions GmbH, Atos SE, Capgemini SE, Accenture plc, IBM Corporation, Hewlett Packard Enterprise Company, Cisco Systems, Inc.
Find out what your peers are saying about KerioControl vs. OPNsense and other solutions. Updated: March 2025.
842,466 professionals have used our research since 2012.