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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
327
Ranking in other categories
Software Defined WAN (SD-WAN) Solutions (1st), WAN Edge (1st)
KerioControl
Ranking in Firewalls
29th
Average Rating
8.2
Reviews Sentiment
7.0
Number of Reviews
57
Ranking in other categories
Intrusion Detection and Prevention Software (IDPS) (15th), Unified Threat Management (UTM) (11th)
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 April 2025, in the Firewalls category, the mindshare of Fortinet FortiGate is 21.1%, up from 17.7% 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 12.3%, down from 17.6% 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

"From the firewall perspective, the rules and policies are very sufficient and easy to use."
"The security features are about the best that I've seen anywhere."
"FortiGate is very simple to manage and easy to use."
"It's an easy solution to set up."
"Fortinet FortiGate is easy to use. Anyone can easily maintain it."
"You can purchase switches and you don't need to do anything with them. You just put in the firewall and the switches get all the policies and rules that you already have in the firewall. With Fortinet, you just connect the FortiSwitch to the Fortinet and that's it."
"We are very happy with the general bandwidth agility we have seen from one website to another website."
"Fortinet FortiGate is user-friendly and affordable."
"The most valuable features include geo-tagging, which blocks all other IPs except for the specified accounts, and web filtering."
"The user interface and the ease of use are pretty good. Everything fits together so nicely."
"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."
"It prevents people from visiting undesirable sites and ensures that they use the internet for their designated jobs."
"When one of the employees of my customers is using the VPN Client, I have created for them that they will always get a message. When the VPN Client connects to Kerio Control from the outside, they will get an email so they know when they are connected and when they are disconnected what is happening to their network."
"It has helped our organization with testing."
"All of the features of Kerio Control are equally good. Most valuable to us are the firewall rules, the intrusion detection system, and IP address features."
"The firewall appliance itself is the most valuable feature."
"The technical support is very good."
"The DNS-level filtering is impressive for thwarting time scanners."
"The most valuable features in OPNsense are reporting and visibility."
"It has firewall and VPN capabilities, which are very valuable features."
"The solution is good for a basic firewall for a small business or for home use."
"It has an open license. It works very well, and there is an update every month."
"OPNsense is easy to use and open source."
"It's open source."
 

Cons

"There can be more security in hybrid implementations. When a customer has a hybrid environment where some parts are in the cloud, we need a consistent security solution for such scenarios."
"In the future, I would like to see improvements made to cloud-based management."
"Their software support needs improvement. I would prefer to have better support for bug fixes. Sometimes, we open a ticket, and it is very difficult to get a solution. Specifically, we are not at all happy with their support for load balancing."
"It should be more stable. There should be full integration within Fortinet products themselves as well as with other third-party products. Especially when you're not dealing with SIEM and the correlation of the security box, we want Fortinet to be able to share that information with as many other products as it can."
"WAN load-balancing could be a lot better at detecting when a link is poor or inconsistent, and not just flat out dead."
"Their support can be better, and there should be better policies for immediate replacement in critical situations."
"The documentation available for Fortinet FortiGate should be improved"
"Application management can be improved."
"The one thing that did put me off of the solution was that, after they were taken over by GFI, the licensing and a few other items have gotten very complicated."
"We'd like to have more integrations Kerio Operator."
"The Kerio hardware devices look cheap and could be improved. Some of our clients are switching to Sophos because their hardware has a more sleek design."
"KerioControl should add more options in VPN features, such as IPsec VPNs, SSL VPNs, and L2TP VPNs, because KerioControl uses a special VPN for their products."
"I would like the customer statistics to be more user-friendly. It should explain more what users have been doing throughout the day. Sometimes, it'll just say they downloaded a big file. Meanwhile, they were connected through a VPN."
"They should improve the remote connectivity feature for users."
"The filtering on the unlicensed version of Kerio Control is inefficient - you have to add each website manually, which isn't feasible."
"Kerio Control could improve by having higher availability and adding a mobile VPN channel. These additions are needed. The VPN is working fine on the Kerio Control but there needs to be a VPN client on the mobile phones, both for iOS and Android. This would be very good for us."
"There are issues with stability and reliability."
"We did not like the fact that you have to configure everything with the graphic user interface. We have used other firewalls, such as FortiGate, that you can configure via code. OPNsense is not easy to integrate. When you are deploying via GitHub or another source repository, this is not possible. That's one thing we didn't like much."
"There are a few weaknesses. For example, there is a lack of some features that I have in certain commercial products."
"The IPS solution could be more reliable."
"The reporting part could be better."
"There should be more technical documentation."
"OPNsense showed me some problems when using it in different environments. The problem is integration with a virtual server."
"OPNsense could improve by making the configuration more web-based rather than shell or command-line-based."
 

Pricing and Cost Advice

"Fortinet bundles FortiGate with other products and because of this, the price is a little expensive to some SMB enterprises."
"The licensing costs are very low."
"The initial setup is super straight forward and as far as the licensing goes for the small product that we have, the pricing was pretty competitive. It wasn't as simple and as cheap as a SonicWall but for the service we would get it was a good price."
"The price of Fortinet FortiGate is better than Cisco, Check Point, and Palo Alto. In terms of pricing, it's probably a better-priced firewall solution overall."
"Easy to understand licensing requirements."
"The license is yearly. We pay for the top end. It's called 360."
"The value is the capability of having multiple services with one unique license, not having the limitation per user licensing schema, like other vendors."
"For our organization, the licensing costs are approximately $7,000 per year."
"The price of the solution is reasonable. For additional costs, you can add on more features such as antivirus."
"It is priced low enough for entry-level, but it has the power to grow with a company without them having to replace it."
"It is a good fit for SMBs because of its maintainability. When you want to keep your costs low, then Kerio Control is a very good solution. It's not an expensive product that is well integrated. It has a complete set of features within it that make it a very strong product."
"There's a one-time fee. For KerioConnect, it's just a server. With KerioControl, you have an option. You can virtualize it on a VMware system or have the hardware. I think mid-range or desktop KerioControl hardware could cost around 2000 dollars for a 25 user client. You need annual renewal for additional features like antivirus."
"The price is inexpensive."
"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?"
"The price is fine."
"I pay approximately $50 for the solution on an annual basis."
"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."
"OPNsense is an open-source solution and it is free to use."
"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."
"There are no licensing costs for OPNsence."
"It's a free solution."
"We are not paying any licensing fees. OPNsense is completely free for us."
"It is free."
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Top Industries

By visitors reading reviews
Educational Organization
21%
Computer Software Company
14%
Comms Service Provider
7%
Manufacturing Company
6%
Computer Software Company
22%
Comms Service Provider
9%
Financial Services Firm
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: April 2025.
847,862 professionals have used our research since 2012.