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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

"Fortinet FortiGate is a stable solution."
"We are using this solution to protect our network on every site."
"FortiGate is a scalable product and our customer has approximately 2,000 users."
"One of the valuable features is a standardized OS."
"It is quite easy to handle."
"Fortinet FortiGate is a simple solution, and the integration with other solutions in the Fortinet portfolio, such as the Security Fabric integration, is competitive."
"I highly recommend the Fortinet product because of its implementation, as it is a solid product with an easy configuration and good support."
"On a scale of one to ten, I rate this solution 10 out of 10."
"Kerio's VPN has easily saved us 50 percent, maybe more, in terms of time spent on support."
"Kerio Control gives us everything in one solution."
"The interface control manager where we can allocate LAN connections to certain VLANs is the most valuable feature. The other feature that's important for us is because obviously everything is remote with MyKerio, as long as the boat has an internet connection, we can log onto the Kerio and get statistics, as well as provide support."
"The firewall appliance itself is the most valuable feature."
"We have many customer sites and the solution gives us control over bandwidth internet."
"I am impressed with the tool's firewall filtering capacity."
"The product is brilliant."
"The most valuable features include geo-tagging, which blocks all other IPs except for the specified accounts, and web filtering."
"The cost is very low."
"This is a capable appliance and the standard features work well for us."
"The solution can scale well."
"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."
 

Cons

"There are some tiny bugs that sometimes affect the operations."
"The solution isn't exactly scalable, especially when it comes to the public cloud environment."
"The things we require are already sorted out, so there isn't any scope for improvement as far as our requirements go. However, its price can be better."
"The customization could be improved. Cisco, for example, is much better at this."
"The stability and performance of Fortinet FortiGate are mixed, as some features are quite good and very stable while others are quite new and very buggy."
"The renewal price and the availability could be improved."
"One area for improvement for Fortinet FortiGate could be the price, as my clients here are small companies, and they might not have the resources or money to always buy a Fortinet FortiGate solution or FortiGate products."
"I would like to see more advanced developments of a wireless controller in the future."
"If you put the appliance in Fail-Over mode it will simply FAIL, and will bypass your routing rules."
"My experience with the solutions technical support is fine but they could be faster in responding."
"The only stability issue that we have is with regard to the latency and using MyKerio."
"Filtering of pages and greater personalization in services need improvement."
"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."
"The logs could be improved for better clarity."
"I would like to be able to inspect https packets for the purpose of virus scanning."
"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."
"I have never seen it in any company that I've worked with before, and I would advise other companies not to buy it."
"Although manageable, the user interface is a little bit slow and could be improved."
"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

"We have the full version of Fortinet FortiGate and we are on a three-year contract with a commitment of five years."
"The pricing is reasonable."
"I give the pricing a nine out of ten."
"The pricing depends on the FortiGate model we are using, ranging from $3,000 to $20,000 US dollars."
"It is too expensive for us. My organization is very small, and we have a total of ten users. We have three internal users and seven external users. The FortiGate 100D series is too expensive for renewing the licenses."
"There is an annual license to use this solution. The prices have been increasing over the years."
"It could be more competitive and cost-effective."
"The price of Fortinet FortiGate when compared to other solutions is high. However, my knowledge of the price is from third parties and I am not sure how accurate it is. I typically work in the technical area of my organization."
"KerioControl's pricing is reasonable. The license for KerioControl is annual. It's difficult to specify an exact cost since it varies depending on the number of users and additional software combined with it. For example, a basic box might cover 25 users, but licenses can be purchased starting from 10 users."
"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."
"I am living in Iran and we cannot buy the product from Kerio because of sanctions."
"Its price is fair. There are no additional costs."
"The price of the solution is reasonable. For additional costs, you can add on more features such as antivirus."
"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."
"My advice is to use your own hardware, and do not use theirs."
"The yearly maintenance fee is a bit high for the Kerio Control Boxes. The end of life for the devices is kind of short. It seems like they're making you upgrade within a short period of time. They should at least allow five years, but it seems like they are changing their end of life to be shorter to generate revenue."
"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
21%
Computer Software Company
9%
Outsourcing Company
8%
Construction Company
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business361
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.
885,264 professionals have used our research since 2012.