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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
587
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 (1st)
KerioControl
Ranking in Unified Threat Management (UTM)
10th
Average Rating
8.2
Reviews Sentiment
6.9
Number of Reviews
58
Ranking in other categories
Firewalls (28th), Intrusion Detection and Prevention Software (IDPS) (15th)
Zyxel Unified Security Gateway
Ranking in Unified Threat Management (UTM)
13th
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 March 2026, in the Unified Threat Management (UTM) category, the mindshare of Fortinet FortiGate is 30.5%, down from 37.8% compared to the previous year. The mindshare of KerioControl is 3.4%, down from 3.6% compared to the previous year. The mindshare of Zyxel Unified Security Gateway is 4.0%, up from 3.0% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Unified Threat Management (UTM) Mindshare Distribution
ProductMindshare (%)
Fortinet FortiGate30.5%
KerioControl3.4%
Zyxel Unified Security Gateway4.0%
Other62.1%
Unified Threat Management (UTM)
 

Featured Reviews

Vasu Gala - PeerSpot reviewer
Manager, Information Technology Operation/Presales at TechMonarch
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
Product manger at Asbis Mediteranean
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…
reviewer2399337 - PeerSpot reviewer
Sales and technical consultant at a manufacturing company with 10,001+ employees
User has benefited from stable performance and effective completion of security tasks
I use it mostly for VPN and for some firewall solutions When considering my main use case with VPN, I can say that I got the Zyxel Unified Security Gateway, and it works fine. However, we are thinking about using a different solution based on open source because Zyxel Unified Security Gateway…

Quotes from Members

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

Pros

"I find the ease of configuring specific policies to be the most valuable feature of the Fortinet FortiGate firewall."
"Its usability is good. We can easily navigate the system, and we have a very good user experience."
"It is an excellent product and works extremely well."
"The most valuable features of the FortiGate firewall include SSL inspection, VPN functionality, and threat intelligence features for preventing threats."
"The most valuable features are the possibility of having one fabric for switching on security."
"The Fortinet technical support is awesome."
"The solution is used in my company since its management is very comfortable"
"Fortinet FortiGate has a very simple configuration, is easy to set up, and includes SD-WAN features at no additional cost."
"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."
"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 and the content filtering options are valuable."
"Now that we're both running fiber connections between Sydney and Adelaide, I can access our document server in Adelaide just from my PC, rather than using something like TeamViewer and transferring the file I'm after via TeamViewer from Adelaide."
"The most valuable feature is the reliability of VPN capabilities. The VPN has been very reliable and secure. The security has been very good and the VPN connections are reliable in that they stay up. We don't have a lot of problems with downtime and that type of thing."
"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."
"The flexibility of the system, the capacity to provide the right level of security, and the ability to be integrated into different kinds of infrastructures are the most valuable features."
"The solution can scale well."
"The most valuable features of the solution stem from web filtering, malware protection, and antivirus."
"The Zyxel Unified Security Gateway solution is stable and does its job effectively."
"This is a capable appliance and the standard features work well for us."
"This is a capable appliance and the standard features work well for us."
 

Cons

"It is somewhat expensive compared to other solutions such as Sophos."
"It would be a benefit if Fortinet would release a one-stop solution that is better integrated with other products and an automated emergency response system."
"There is room for improvement related to the logging and reporting aspect."
"It could use more templates for third-party site-to-site VPN setups other than FortiGate and Cisco."
"Like any hardware, it has finite scalability restrictions."
"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."
"The reporting in Fortinet FortiGate could improve. Customers are having to purchase additional reporting components. When I have used the Sophos solution it is a complete solution, in Fortinet FortiGate you have to use additional tools to have the features needed."
"The support package being an additional extra, even with an enterprise package purchase, is pathetic. Though I haven't had direct experience with support, the fact that it doesn't come by default, which is very misleading compared to other brands, warrants a rating of two out of ten."
"Technical support is not the best. As an example, this past weekend I had an issue; it took me four days to get a hold of their support team, and I'm a premium client."
"If a hardware issue arises with a firewall, then it takes at least a week, maybe a week-and-a-half, to get a new firewall sent by GFI; that's really not acceptable."
"The GUI should be changed because it remains the same consistency across versions. However, those who have been using KerioControl for a long time may be accustomed to the current interface. Installing a new version in the same location makes it easy to find, but overall, there are no notable changes between versions."
"I would like for them to add more security features."
"There isn't a lot to be improved. It works well as it is, but they can maybe improve the reporting side."
"Filtering of pages and greater personalization in services need improvement."
"We'd like to have more integrations Kerio Operator."
"It has a VPN back to our data center but I don't think it has increased the number of VPN clients extended to those outside our environment"
"Although manageable, the user interface is a little bit slow and could be improved."
"Sometimes it reboots when you least expect it, and that's the main issue."
"The product has some scalability and data management issues where improvements are required."
"Although manageable, the user interface is a little bit slow and could be improved. The advanced UI allows me to do whatever I want, but this is where the issue of speed exists."
 

Pricing and Cost Advice

"The product is not very expensive."
"Fortinet is competitive price-wise."
"The licensing cost is at the intermediate level."
"Go for long term pricing negotiated at the time of purchase."
"The pricing is justified. It's a little pricey, but what you pay for is what you get."
"In terms of the market, it's not a cheap product, but it's cost-effective."
"Its pricing is good. It's average or normal as compared to Palo Alto and Check Point firewalls."
"Pricing and licensing is a little bit complicated in FortiGate. They are always on the higher side. This is one issue that we always raise with the company that they should reduce the price according to Indian market requirements. There are no costs in addition to the standard licensing fees."
"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?"
"Its price is fair. There are no additional costs."
"It's pretty expensive in licensing costs, especially if you use the product longer than one or two years. The licensing costs are still high, which I don't think is reasonable for a product like this."
"Our clients see ROI with Kerio Control, as they are saving bandwidth costs."
"The pricing is in-line with our expectations in terms of the quality that we get for it."
"It gives us a lot. It does prove to be a very robust product for the cost."
"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."
"I am living in Iran and we cannot buy the product from Kerio because of sanctions."
"This gateway is pretty cheap."
"The price of Zyxel Unified Security Gateway is good compared to other similar products in the market."
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Top Industries

By visitors reading reviews
Computer Software Company
11%
Comms Service Provider
10%
Manufacturing Company
8%
Financial Services Firm
6%
Computer Software Company
18%
Comms Service Provider
9%
Manufacturing Company
7%
Media Company
6%
Comms Service Provider
22%
Computer Software Company
9%
Outsourcing Company
8%
Non Profit
5%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business360
Midsize Enterprise135
Large Enterprise190
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 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 is your primary use case for KerioControl?
With KerioControl, we usually use them for site-to-site VPNs for most of our clients. With multiple offices, we use K...
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...
 

Also Known As

Fortinet FortiGate Next-Generation 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
Information Not Available
Find out what your peers are saying about KerioControl vs. Zyxel Unified Security Gateway and other solutions. Updated: March 2026.
884,976 professionals have used our research since 2012.