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KerioControl vs Zyxel Unified Security Gateway comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Nov 7, 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 Unified Threat Management (UTM)
1st
Average Rating
8.4
Reviews Sentiment
6.9
Number of Reviews
574
Ranking in other categories
Secure Web Gateways (SWG) (2nd), Firewalls (1st), Intrusion Detection and Prevention Software (IDPS) (1st), Software Defined WAN (SD-WAN) Solutions (1st), WAN Edge (1st), ZTNA (2nd)
KerioControl
Ranking in Unified Threat Management (UTM)
11th
Average Rating
8.2
Reviews Sentiment
6.9
Number of Reviews
58
Ranking in other categories
Firewalls (28th), Intrusion Detection and Prevention Software (IDPS) (18th)
Zyxel Unified Security Gateway
Ranking in Unified Threat Management (UTM)
14th
Average Rating
6.6
Reviews Sentiment
4.9
Number of Reviews
4
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of November 2025, in the Unified Threat Management (UTM) category, the mindshare of Fortinet FortiGate is 34.1%, down from 39.0% compared to the previous year. The mindshare of KerioControl is 3.2%, down from 3.3% compared to the previous year. The mindshare of Zyxel Unified Security Gateway is 4.3%, up from 2.5% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Unified Threat Management (UTM) Market Share Distribution
ProductMarket Share (%)
Fortinet FortiGate34.1%
KerioControl3.2%
Zyxel Unified Security Gateway4.3%
Other58.4%
Unified Threat Management (UTM)
 

Featured Reviews

Vasu Gala - PeerSpot reviewer
A stable solution with an intuitive interface and quick customer service
I have been working with Fortinet FortiGate, WatchGuard, Sophos, and SonicWall. I'm not as comfortable with SonicWall because of their UI and limitations. I prefer Fortinet above all other options. When it comes to configuration, I am confident in my ability to handle various tasks, including creating policies such as firewall rules, web policies, and application policies. Additionally, I can configure VPNs and implement load balancing, among other tasks. Overall, I feel much more comfortable working with Fortinet. Fortinet has made significant improvements by integrating AI with firewalls for threat analysis and prevention. In the past 2-3 years, they have launched FortiSASE and SIEM, and they also provide SOC services. Both Palo Alto and Fortinet FortiGate are excellent. While Fortinet FortiGate comes at higher prices, the functionality and support justify the cost. They promptly resolve firmware issues and inform all support providers about configuration changes.
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…
Alexander Azikov - PeerSpot reviewer
A robust appliance that is reasonably priced and straightforward to set up
Although manageable, the user interface is a little bit slow and could be improved. There are two user interface options available, namely the basic and the advanced. The basic UI is not very good and doesn't have a lot of features, although it is fast. The advanced UI allows me to do whatever I want, but this is where the issue of speed exists. At one of our sites, the CPU utilization was very high, and for no reason. Technical support needs to be more responsive to requests.

Quotes from Members

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

Pros

"Overall, I would rate Fortinet FortiGate a ten out of ten."
"The main benefit I have seen from using Fortinet FortiGate is the protection it offers because I can see threats that come through in real-time, and if they are blocked, I can see that."
"The most valuable feature of FortiGate Next Generation Firewall is its SD-WAN."
"We have been able to offer several services to customers in a single box."
"The reporting and monitoring are very good."
"FortiGate also makes GRE tunneling possible."
"Fortinet FortiGate has a very simple configuration, is easy to set up, and includes SD-WAN features at no additional cost."
"The solution effectively controls browsing traffic."
"It is very comprehensive and simple. It has all the active protections. It's updated. We love that you can set how often it is updated so you can work what is right for you. A large company with a lot of bandwidth can update the virus definitions and security definitions hourly, if they want. A smaller site that's remote, where maybe updating the definitions will eat into the bandwidth, we can schedule those more to go later at night. It's very flexible and works for us in all types of situations. This is great because then we don't have to learn seven different products to be able to work with seven different scenarios."
"The firewall and intrusion detection features are very useful these days because hackers have a lot of tricks that they use to get into a system. With Kerio Control you can see something that's happening. Otherwise, you have to use other tools to see what's happening on the firewalls. Having IPS in it is quite useful for us."
"The product is affordable."
"It has helped our organization with testing."
"The tool shows what has been blocked externally. It's very good because once installed and correctly set up, it allows you to work from home as if you are in the office, without any errors or issues. It's very simple to use, click to connect or disconnect."
"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."
"The comprehensiveness of the security features that Kerio Control provides us with is good. Before GFI had it, they would have more updates. The updates have been slower, but I like the things that they keep adding like the ability to block by country. I use pretty much every feature."
"The solution provides feasibility regarding cyber privacy."
"The most valuable features of the solution stem from web filtering, malware protection, and antivirus."
"This is a capable appliance and the standard features work well for us."
"The solution can scale well."
 

Cons

"Fortinet FortiGate could improve by having a frequent ask questions(FAQ) area for people to receive quick answers to popular questions. Additionally, it would be beneficial to have an SMS notification feature. For example, if you cannot access your email you could receive an SMS message."
"Integrating OpenVPN with FortiGate would provide a powerful combination of secure remote access and comprehensive network security."
"I would like to have logs, monitoring, and reporting for a month without extra fees."
"In most cases, the IPS engine uses too many resources, which makes Fortinet FortiGate devices unstable."
"Their support's response time can be better. In the past six months, they took quite a long time to respond to the support tickets."
"I would like to see improvements in the product's application rules."
"One area for improvement is the performance on bandwidth demands for smaller devices, as well as better web filtering."
"There are some complex administration tasks in their administration portal. That needs to be improved."
"Their support is getting better but still needs improvement."
"The antivirus seemed to be a bit laggy on the connection so I disconnected that. It's definitely good. The only issue we've had with any sort of cyber attack seemed to be coming from a couple of distinct locations, people trying to get into known ports on remote desktops and stuff like that. The fact that we can block all that traffic is just great. It simplifies it."
"I would like to see a little improvement in their technical support when you have a problem. I may be a little jaded because I came from Kerio when we could call and get a person on the phone who worked on the product. Every tech had their own demo setup. They had instant messaging capability with the developers. If we found a problem, then we could get a result for it quickly. Now, the product seems to be 24 hours. They have also gone to the model that if you need quicker support, then they now charge you additional for the exact same level of support that they used to give. I am assuming it's the exact same level of support that they say it is. I'm not paying extra for it. That's the biggest flaw with the product."
"I would like for them to add more security features."
"There's also room for improvement in the Traffic Rules. We define networks to use a specific outgoing interface, say VSAT, shore, or marine WiFi, which is okay. But then all we have is a checkbox that says "Use other internet interfaces if this one is unavailable." What we would prefer would be to have a priority list. So if VSAT is unavailable, try to use 4G, etc. We haven't really found a reliable way of doing that in the current release."
"The overall speed needs improvement. Internet connectivity speed needs to be improved somehow."
"I would like for there to be a difference between international and national links."
"I would like it if the interface section had multiple failovers. Although I do have three connections, just in case our physical cables get disconnected, I can only set up one failover as a backup. So, if for some reason our fiber and our AFM went down together, I would have to have it search for our 4G modem. I'd love to have extra backups running."
"The product has some scalability and data management issues where improvements are required."
"Sometimes it reboots when you least expect it, and that's the main issue."
"Although manageable, the user interface is a little bit slow and could be improved."
 

Pricing and Cost Advice

"I pay €1,200 per year for the license along with Fortinet's 81E firewall appliance. I would rate this pricing as 3/5 stars, and I believe the price is reasonably similar to its competitors in the market, being somewhere in the middle."
"They are very competitive, but we like to have the factory warranty taken care of."
"FortiGate Next Generation Firewall is an expensive solution."
"Fortinet is the least expensive solution."
"These boxes are not that expensive compared to what they can do, their functionality, and the reporting you receive. Fortinet licensing is straightforward and less confusing compared to Cisco."
"Fortinet FortiGate has different licensing models, depending on what you're going to do. Services included would depend on the license model. Licenses can be renewed annually."
"The price is relatively expensive compared to other solutions which are providing similar features."
"The pricing is comprehensive and clear. You can easily understand what you are purchasing, including which features correspond to each license and maintenance contract. Overall, the information is straightforward. Additionally, compared to other vendors, their prices are competitive."
"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 of Kerio Control could be better, it is a bit overpriced compared to other solutions."
"Its price is fair. There are no additional costs."
"It's very affordable."
"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."
"Our clients see ROI with Kerio Control, as they are saving bandwidth costs."
"We have to pay approximately EUR 175 for the product."
"I pay approximately $50 for the solution on an annual basis."
"The price of Zyxel Unified Security Gateway is good compared to other similar products in the market."
"This gateway is pretty cheap."
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Top Industries

By visitors reading reviews
Computer Software Company
14%
Comms Service Provider
9%
Manufacturing Company
8%
Financial Services Firm
6%
Computer Software Company
21%
Comms Service Provider
9%
Media Company
7%
Manufacturing Company
6%
Comms Service Provider
22%
Computer Software Company
15%
Outsourcing Company
7%
Non Profit
5%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business350
Midsize Enterprise130
Large Enterprise187
By reviewers
Company SizeCount
Small Business44
Midsize Enterprise9
Large Enterprise3
No data available
 

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?
Regarding KerioControl's application awareness and control feature, I have not used it much.
What do you like most about Zyxel Unified Security Gateway?
The most valuable features of the solution stem from web filtering, malware protection, and antivirus.
What is your experience regarding pricing and costs for Zyxel Unified Security Gateway?
I cannot definitively comment on whether Zyxel Unified Security Gateway is an affordable product as I haven't done co...
What needs improvement with Zyxel Unified Security Gateway?
The integration capability is quite challenging. The system is very complicated, and many features are hidden. I'm lo...
 

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
Information Not Available
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