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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
580
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 (27th), Intrusion Detection and Prevention Software (IDPS) (16th)
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 December 2025, in the Unified Threat Management (UTM) category, the mindshare of Fortinet FortiGate is 32.7%, down from 38.6% compared to the previous year. The mindshare of KerioControl is 3.3%, down from 3.5% compared to the previous year. The mindshare of Zyxel Unified Security Gateway is 4.5%, up from 2.7% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Unified Threat Management (UTM) Market Share Distribution
ProductMarket Share (%)
Fortinet FortiGate32.7%
KerioControl3.3%
Zyxel Unified Security Gateway4.5%
Other59.5%
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.
MM
Senior Systems Tech/Admin at Samco Software Inc.
Comprehensive Security Features and High Ease of Setup Elevate User Experience
The best features for KerioControl are its proprietary VPN protocol, which does not connect easily with other firewalls unless you enable IPsec. It will only connect to KerioControl. KerioControl is very valuable for business. Key points where KerioControl is valuable include its own anti-spam, intrusion prevention, and antivirus, which is included in the yearly subscription renewals. The VPN capabilities are helpful in managing my remote or distributed workforce, as we create documents and set up a location for clients to download. Clients can download KerioControl's VPN client online, and they just have to log in from the VPN client, which connects easily. I assess the firewall function in filtering both incoming and outgoing network traffic with KerioControl as excellent. Everything is logged, and any intrusion, antivirus, virus, or anything foreign to the system trying to hack in gets logged, and we can easily block those IPs.
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

"The setup is easy."
"Fortinet FortiGate is a scalable solution."
"The flexibility and ease of configuration are the most valuable features."
"We can detect any attack of viruses or malware at the first point of contact."
"Mainly the FortiGate reporting system is very good. It guides us through all the expectations of security. Fortinet provides us all that we need for security. Also, Fortinet FortiGate is a next-generation firewall. It is much more advanced than others."
"Their web interface to manage it is excellent, even compared with other providers."
"It's very good and very stable for businesses. It works very well."
"This is a quality product with ok support, and it is better than the competition we've tried."
"Kerio Control is easy to use and provides the ability to deliver customized solutions."
"Kerio has improved my organization's security."
"Its support is very good, and it is stable product.​"
"The product is affordable."
"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."
"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."
"One very good thing about the Kerio device is its authentication. I don't have a Windows domain for authentication. Instead, I use the Kerio product because it can separate users by Mac addresses and give them IP addresses based on their usernames, automatically logging them in. This makes for a very simple authentication system."
"This is a capable appliance and the standard features work well for us."
"The Zyxel Unified Security Gateway solution is stable and does its job effectively."
"The most valuable features of the solution stem from web filtering, malware protection, and antivirus."
"The solution can scale well."
 

Cons

"The solution needs to improve its support."
"Some of the web policy reports could be improved."
"There are no areas that need improvement at this point in time."
"The support is inadequate. The support staff I have dealt with lately are very rude. Some support staff are not up-to-speed with the technology. They basically read a script."
"One of the problems I was having was with user mapping, and it is an issue for which I have escalated tickets with Fortinet support."
"Fortinet's support team consists of a huge networking team, because of which there is a delay in response at times."
"There should be some open-source training or free training for decision makers, or some webinars should be available. These would help understand the new product line and the existing product line features."
"It should provide better visibility over the network and more information in the form of reports for the end users. Its installation should also be easier."
"Improvements are needed to the Next Generation Firewall Protection, specifically with user-level protection."
"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."
"I would like to see them develop a bit more flexibility creating VLANs."
"I would like for there to be a difference between international and national links."
"The solution should offer more dashboards."
"Support responses need improvement."
"The improvement that we are looking for is for when decide to move some part of our application to the cloud."
"When we did our last update, we had some trouble with the initial syncing process to get our messaging to go through. But we were also moving a store and a lot was changing during that process. I don't think it was on Kerio's end. It just coincided with the update. Once we got our third-party IT guy involved it was resolved very quickly."
"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

"FortiGate Next Generation Firewall is an expensive solution."
"It is cost-effective, and provides a good value for your money. The pricing, and license renewal, is very reasonable for us."
"The price, in comparison to other products is very cheap."
"Fortinet FortiGate as a less expensive solution than Palo Alto."
"The pricing is flexible."
"In the Asian economy in which we operate, FortiGate is expensive."
"For the price, I'd rate it a ten because it's very cost-effective."
"The price of Fortinet FortiGate is reasonable for an SME."
"The price is inexpensive."
"Its price is fair. There are no additional costs."
"It's very affordable."
"The price of Kerio Control could be better, it is a bit overpriced compared to other solutions."
"It is priced low enough for entry-level, but it has the power to grow with a company without them having to replace it."
"Search and compare."
"KerioControl's pricing is good."
"The fixed model of users and devices is a bit of a problem for us. We want to be able to expand it fast and not have to contact our supplier first to get a license... If they had a larger fixed price with unlimited users or devices, that would help. Now, it's five users each time. A pack of 100 or 200 users for a certain price would make it more dynamic and user-scalable."
"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
19%
Comms Service Provider
9%
Media Company
7%
Manufacturing Company
7%
Comms Service Provider
22%
Computer Software Company
12%
Outsourcing Company
7%
Non Profit
5%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business357
Midsize Enterprise132
Large Enterprise188
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...
 

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: December 2025.
879,259 professionals have used our research since 2012.