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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)
12th
Average Rating
8.2
Reviews Sentiment
6.9
Number of Reviews
58
Ranking in other categories
Firewalls (29th), 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 September 2025, in the Unified Threat Management (UTM) category, the mindshare of Fortinet FortiGate is 35.6%, down from 39.4% compared to the previous year. The mindshare of KerioControl is 3.2%, up from 2.9% compared to the previous year. The mindshare of Zyxel Unified Security Gateway is 4.0%, up from 2.4% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Unified Threat Management (UTM) Market Share Distribution
ProductMarket Share (%)
Fortinet FortiGate35.6%
KerioControl3.2%
Zyxel Unified Security Gateway4.0%
Other57.199999999999996%
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

"The SD-WAN function is very developed. It has SD-WAN functionality with security features in one device. We can manage from one single console SD-WAN and the security policy."
"The best feature of Fortinet FortiGate is value for money."
"The solution is very, very easy to use."
"The best features of Fortinet FortiGate include the simple user interface."
"With Fortinet FortiGate, we improved security significantly."
"FortiGate has led to a reduction in our security budget."
"Our project needs to link two sides through the internet. One of these was in Cairo and the other in another city. We used FortiGate as the integrating solution between the two locations, i.e. the Fortinet 30E & 100E."
"Fortinet FortiGate is easy to use. Anyone can easily maintain it."
"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."
"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."
"Kerio is a lot clearer to set up to do particular things, whereas when I do it on a Cisco or a FortiGate I have to go fight with it per week sometimes to do something I can do in 20 minutes on Kerio."
"The solution’s firewall and intrusion detection features are quite good because you can see exactly who is attacking you and who is getting blocked."
"The most valuable features include geo-tagging, which blocks all other IPs except for the specified accounts, and web filtering."
"The initial setup is a breeze."
"Kerio Control can be scaled easily."
"The top features are ones that we're not using yet but we soon will be because we've just had broadband upgraded in Australia. We've got something called the National Broadband Network, which is forced onto you, so you have to take it when it arrives. We'll be trying the high availability out soon. We tried that with some load balancing, it didn't quite work as we expected, but I think that was more of a configuration thing rather than a product thing."
"The solution can scale well."
"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."
 

Cons

"Fortinet FortiGate can improve performance. There was a huge challenge in terms of CPU and memory where the IPS engine would keep triggering. There were random spikes of overutilization in the CPU and memory resources. They have to work on CPU and memory stability considering these IPS engines. A few versions were very unstable."
"The AI part needs improvement to enhance its functionality."
"Support could be improved."
"Usually, we sell the bundle with the UTM or threat management piece with IPS, IDS. Other providers, such as Palo Alto, are ahead in terms of safe functionality. So, for me, delivering truly safe service is probably something that still needs to be improved."
"The room for improvement is to have more flexibility on the virtual machines of their next-generation platforms."
"The solution's real-time connection with the cloud could be improved."
"Whitelisting could be better."
"From my experience, I see that the datasheets of the Fortinet FortiGate portfolio need to be more accurate because correct sizing is essential."
"The denial of service could also be improved. There recently was a big issue with denial of service attacks and it was a bit laborious."
"I would like to see them develop a bit more flexibility creating VLANs."
"Support responses need improvement."
"When it comes to dealing with updates, there are often bugs on the solution. They should do a lot more testing before they release new versions."
"Kerio Control could improve content filtering."
"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."
"Filtering of pages and greater personalization in services need improvement."
"The solution can be improved to create the capability for larger bandwidths that support our business needs."
"Although manageable, the user interface is a little bit slow and could be improved."
"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."
 

Pricing and Cost Advice

"Its licenses cost the same for different subscription plans."
"While Fortinet FortiGate has a higher price point compared to Sophos XG, its user-friendly interface justifies the cost."
"The beauty is the price performance ratio is great with FortiGate. It provides all the features we needed and the price is comparable with others' firewalls. The price is quite competitive with the firewalls with similar features."
"If you compare the price of Fortinet FortiGate IPS to other firewalls, Check Point is priced very high followed by Palo Alto and Sophos. Fortinet FortiGate IPS price is more reasonable."
"The price of Fortinet FortiGate is reasonable."
"The pricing depends on the FortiGate model we are using, ranging from $3,000 to $20,000 US dollars."
"There is a need to pay for a license for the product."
"It is not the cheapest one, but its price is very competitive."
"On the low-end device that I use, it has unlimited IP addresses. So, they have a subscription model where, on the higher models, you pay X dollars for 10 IP addresses. Then, if you want any more, you have to pay more on the model. On the low-end model, it has unlimited IP addresses, because if you have too many users, the thing will just slow you down and stop working. At some point, you need to say, "Okay, I've grown to a point where performance is impacted. I need to get some bigger hardware." If I get to that stage, I will possibly look at using one of the virtual appliances and putting it on some bigger hardware."
"Search and compare."
"It's too expensive. The license, in the last year or so, has gone up by over a £100. We're almost being out-priced by the annual license at the minute."
"Its price is fair. There are no additional costs."
"I pay approximately $50 for the solution on an annual basis."
"My advice is to use your own hardware, and do not use theirs."
"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."
"KerioControl's pricing is good."
"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
15%
Comms Service Provider
9%
Manufacturing Company
8%
Financial Services Firm
6%
Computer Software Company
21%
Comms Service Provider
8%
Media Company
7%
Government
6%
Comms Service Provider
21%
Computer Software Company
15%
Retailer
6%
Outsourcing Company
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business350
Midsize Enterprise129
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
Find out what your peers are saying about KerioControl vs. Zyxel Unified Security Gateway and other solutions. Updated: August 2025.
867,497 professionals have used our research since 2012.