I was working at a bank where internal information security was strict, so I needed to block a lot of websites in Fortinet. For example, we needed to block Gmail, WhatsApp Web, porn, and violent content.
Technical Presales Engineer at a educational organization with 10,001+ employees
It has high availability features so we can have one box on hot standby to take over when another one crashes
Pros and Cons
- "FortiOS allows us to set up alarms for blocked websites and SSL verifications. When someone tries to access a blocked site, the solution sends a notification to the IT manager's mailbox."
- "The user interface is easy to use."
- "FortiOS could provide a more detailed analysis of the network and connected devices."
What is our primary use case?
What is most valuable?
FortiOS allows us to set up alarms for blocked websites and SSL verifications. When someone tries to access a blocked site, the solution sends a notification to the IT manager's mailbox.
The user interface is easy to use. Fortinet has high availability features, so you can have an active and hot standby box. We can have two boxes in Rio and two in São Paulo. When a box crashes, we can transfer all the operations to the second box.
FortiOS tells you exactly what is happening in the first box, so you can quickly understand what went wrong and troubleshoot. Users rarely notice an impact on the daily operations.
What needs improvement?
FortiOS could provide a more detailed analysis of the network and connected devices.
For how long have I used the solution?
I used Fortinet for about nine months.
Buyer's Guide
Fortinet FortiOS
June 2026
Learn what your peers think about Fortinet FortiOS. Get advice and tips from experienced pros sharing their opinions. Updated: June 2026.
902,417 professionals have used our research since 2012.
How are customer service and support?
We have a support contract with a third-party company, but Fortinet provides the licenses, so we update the solution ourselves using the license code.
What other advice do I have?
I rate Fortinet FortiOS nine out of 10.
Which deployment model are you using for this solution?
On-premises
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
Director, IT Infrastructure Department at Zemen Bank S.C.
Excellent management and security features
Pros and Cons
- "FortiOS' most valuable features are management, security, and easy updates with no downtime."
- "FortiOS's bandwidth and interface could be improved."
What is most valuable?
FortiOS' most valuable features are management, security, and easy updates with no downtime.
What needs improvement?
FortiOS's bandwidth and interface could be improved. In the next release, Fortinet should include an option to disable users.
For how long have I used the solution?
I've been working with Fortinet FortiOS for five years.
What do I think about the stability of the solution?
We've been using FortiOS for five years and have had no problems with stability during that time.
What do I think about the scalability of the solution?
FortiOS is scalable.
How are customer service and support?
Fortinet's technical support is good and provides good solutions for us.
How would you rate customer service and support?
Positive
Which solution did I use previously and why did I switch?
Previously, I used Cisco ASA Firewall.
How was the initial setup?
The initial setup was very simple and was completed within a week.
What about the implementation team?
The implementation was done by a reseller and a technical team from our side.
What was our ROI?
On the technical side, we have received a good ROI from FortiOS as its scalability and management are good.
What's my experience with pricing, setup cost, and licensing?
The licensing for FortiOS is good, with a security license included when we update the main license.
What other advice do I have?
I would rate FortiOS eight out of ten.
Which deployment model are you using for this solution?
On-premises
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
Buyer's Guide
Fortinet FortiOS
June 2026
Learn what your peers think about Fortinet FortiOS. Get advice and tips from experienced pros sharing their opinions. Updated: June 2026.
902,417 professionals have used our research since 2012.
Senior Network Administrator at Tawasul telecom
Easy to set up with good segmentation but need better support
Pros and Cons
- "Compared to other firewalls, the segmentation is much easier in FortiGate."
- "Their first-level support is often poorly trained."
What is our primary use case?
We're using the solution for firewall segmentation, including segmentation of the network, authentication purposes, logins, et cetera.
What is most valuable?
Compared to other firewalls, segmentation is much easier in FortiGate.
The initial setup is straightforward.
What needs improvement?
The support could be better. Their first-level support is often poorly trained.
We don't have any other requirements in terms of needing new features.
For how long have I used the solution?
I've used the solution for ten years.
What do I think about the stability of the solution?
The solution is stable. There are no bugs or glitches. It doesn't crash or freeze.
What do I think about the scalability of the solution?
It's scalable. The model we bought is highly scalable. However, if you buy a device on the low end, it may not be scalable. You need to consider what you need in advance and buy more than you need if you believe you will need to scale.
How are customer service and support?
Technical support is okay. Compared to Palo Alto, they need to improve a bit. Palo Alto is better. The first-level team isn't very knowledgeable.
How would you rate customer service and support?
Neutral
Which solution did I use previously and why did I switch?
I work with Palo Alto, Cisco, Fortinet, et cetera.
How was the initial setup?
The initial setup is very simple and straightforward. It's not overly complex or difficult. You only need one person to implement the solution.
The deployment will take only one hour, however, the policy web creation based on the user requirements may take time. That is the nature of every firewall. Usually, the deployment takes only one to two hours.
What about the implementation team?
We handled the setup in-house. We didn't need any outside assistance.
What's my experience with pricing, setup cost, and licensing?
I don't directly deal with licensing. I can't speak to the exact costs.
What other advice do I have?
I'm an end-user. I used to be a partner.
We're using the latest version of the solution and update regularly.
I'd rate the solution seven out of ten.
Which deployment model are you using for this solution?
On-premises
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
Offers good protection and control of traffic, with better deep packet inspection than Azure Firewall
Pros and Cons
- "I like that the firewall gives me a lot of control in terms of outgoing and inbound traffic, and it scores better in deep packet inspections when compared with the Azure Firewall."
- "The support could be improved, Fortinet's response time is very slow. Setting up the VPN could be made much easier, especially when deployed with Azure."
What is our primary use case?
We are consultant architects so our role is to set up firewalls for our customers, who are usually small and medium-sized companies.
What is most valuable?
I like that the firewall gives me a lot of control in terms of outgoing and inbound traffic, and it scores better in deep packet inspections when compared with the Azure Firewall.
What needs improvement?
The support could be improved, Fortinet's response time is very slow.
Setting up the VPN could be made much easier, especially when deployed with Azure.
For how long have I used the solution?
I have been using the solution for a year now.
What do I think about the stability of the solution?
The product is pretty stable.
What do I think about the scalability of the solution?
The solution is scalable.
How was the initial setup?
The initial setup of this solution is relatively easy.
What's my experience with pricing, setup cost, and licensing?
The pricing could always be lower.
Which other solutions did I evaluate?
If I'm going with Azure data center, my first recommendation would always be Azure Firewall with the newly launched premium services. Otherwise, Fortinet is pretty good.
What other advice do I have?
I rate this solution an eight out of ten. I advise users to go through the documentation very thoroughly as it's not the same as your on-premises Fortinet Power. It's slightly different. Setting up the VPN is a bit tricky in Azure, deploying the Fortinet firewall and Azure is somewhat tricky.
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
Security Architect - SME at Rrivate Entrepreneur
Easy to use, beneficial graphical user interface, and feature rich
Pros and Cons
- "The most valuable feature of Fortinet FortiOS network segregation, UTM, and antivirus, freight management protection, such as DDoS. Additionally, the CLI and the GUI are easy to use. The architecture makes sense, and the command in the CLI are organized well. They have quite a lot of features are easy to use, and are user-friendly. Any novice can use Fortinet FortiOS without an issue."
- "There is some room for improvement in the support."
What is our primary use case?
I am using Fortinet FortiOS for firewall security.
What is most valuable?
The most valuable feature of Fortinet FortiOS network segregation, UTM, and antivirus, freight management protection, such as DDoS. Additionally, the command-line interface(CLI) and the graphical user interface(GUI) are easy to use. The architecture makes sense, and the commands in the CLI are organized well. They have quite a lot of features are easy to use, and are user-friendly. Any novice can use Fortinet FortiOS without an issue.
For how long have I used the solution?
I have been using Fortinet FortiOS for approximately eight years.
What do I think about the stability of the solution?
The stability of Fortinet FortiOS initial setup is simple and it is user-friendly. To do the whole process of transferring the firewall configurations and updates took approximately one day.
What do I think about the scalability of the solution?
We have approximately 2,000 users that use what hardware Fortinet FortiOS manages. All types of verticles are passing through the solution.
How are customer service and support?
I rate the support from Fortinet FortiOS a four out of five.
There is some room for improvement in the support.
How was the initial setup?
Fortinet FortiOS initial setup is simple and it is user-friendly. To do the whole process of transferring the firewall configurations and updates took approximately one day.
What was our ROI?
We have seen a return on investment because a lot of the features are effective. We do not need to train our engineers to use the solution, it is very easy to use.
What's my experience with pricing, setup cost, and licensing?
The price of Fortinet FortiOS is comparable to other similar solutions on the market. We are on an annual license to use the solution.
What other advice do I have?
I rate Fortinet FortiOS an eight out of ten.
Which deployment model are you using for this solution?
On-premises
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
Responsible for Cyber Security at IMT IP
Useful blocking lists, reliable, and simple setup
Pros and Cons
- "The most important features of Fortinet FortiOS are the ability to block and make white and black lists. Additionally, the filtering of user access to websites is useful."
- "Fortinet FortiOS is stable. However, last month we had an issue with a released patch. We had to receive another update to fix the firewall issue consuming all of the resources. The patches should be tested more before going into circulation."
What is most valuable?
The most important features of Fortinet FortiOS are the ability to block and make white and black lists. Additionally, the filtering of user access to websites is useful.
For how long have I used the solution?
I have been using Fortinet FortiOS for approximately five years.
What do I think about the stability of the solution?
Fortinet FortiOS is stable. However, last month we had an issue with a released patch. We had to receive another update to fix the firewall issue consuming all of the resources. The patches should be tested more before going into circulation.
What do I think about the scalability of the solution?
We have approximately 800 users using the solution.
Which solution did I use previously and why did I switch?
We were previously using other firewalls, such as Palo Alto. They are similar solutions.
How was the initial setup?
Fortinet FortiOS's initial setup is simple.
What's my experience with pricing, setup cost, and licensing?
We had a three-year license to use Fortinet FortiOS and we are going to renew it this year.
What other advice do I have?
I rate Fortinet FortiOS a nine out of ten.
Which deployment model are you using for this solution?
On-premises
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
Consultant at Orange
Reliable, low maintenance, and installation simple
Pros and Cons
- "I have found the most valuable feature of Fortinet FortiOS is the low maintenance."
- "Fortinet FortiOS provides a full UTM experience, including UTM profiles, firewall rules, remote access, VPN connection, IPSec, and SSL connection."
- "The central management can improve in Fortinet FortiOS. It is sometimes difficult to manage all the devices."
What is our primary use case?
Fortinet FortiOS provides a full UTM experience, including UTM profiles, firewall rules, remote access, VPN connection, IPSec, and SSL connection.
What is most valuable?
I have found the most valuable feature of Fortinet FortiOS is the low maintenance.
What needs improvement?
The central management can improve in Fortinet FortiOS. It is sometimes difficult to manage all the devices.
I wrote my opinion about changes to the SSL-VPN authentication directly on the Fortinet forum, and they said that right now they will not change it. Hopefully, in the future, they will change the SSL-VPN authentication for groups and users.
For how long have I used the solution?
I have been using Fortinet FortiOS for approximately five years.
What do I think about the stability of the solution?
The stability of Fortinet FortiOS depends on the operation being done. If we are using the basic functions I would rate the stability of Fortinet FortiOS a five out of five. If we are using the advanced functionality I would rate the stability a three out of five. Overall the solution is stable.
How are customer service and support?
The support from Fortinet FortiOS is good. However, there are times they give a five out of five level of support and whereas other times they give a one out of five.
How was the initial setup?
Fortinet FortiOS's installation is easy.
What's my experience with pricing, setup cost, and licensing?
The scalability of Fortinet FortiOS is good. However, central management is intuitive for the end-users. We had a lot of questions about central management, and sometimes they didn't use it and did their firewall management directly on FortiGate instead of using Fortinet FortiOS.
What other advice do I have?
My advice to others is for them to read the instructions on how to use the solution.
I rate Fortinet FortiOS a nine out of ten.
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
Manager devops at emergent
A next-generation operating system and firewall with a lot of features
Pros and Cons
- "I am satisfied with Fortinet FortiOS. It's a cool product and has a lot of UTM features. It has application control, web filtering, antivirus, IPS/IDS, DNS filtering, and many things in that firewall. It also has a web application firewall WAF feature. On the feature side, it's a good firewall."
- "It would be better if AWS instances were available. If I want to upgrade from T2.small to T2.medium, it should be available rather than having a big instance and paying a lot of money for that. The issue is that we had deployed in AWS Cloud, and we were using a very small instance. Recently we wanted to move in-house and deploy it on the big instance because it was struggling with the RAM. If we use T2.small, we cannot upgrade it to the T2.medium. It has predefined instances in the marketplace with a lot of cost differences. If I can increase the RAM, I have to choose the T3.large instance. If I'm paying $270 for the small instance, I have to pay more than double the cost for T3.large. It is about $850, and this is not good. So, it would be better if it was cheaper. I think both AWS and Fortinet should think about that. They should provide it on lower instances as well. If I want to upgrade it from T2.small to T2.medium, it should be available, but it's a problem."
- "If I can increase the RAM, I have to choose the T3.large instance; if I'm paying $270 for the small instance, I have to pay more than double the cost for T3.large, it is about $850, and this is not good."
What is our primary use case?
We use Fortinet FortiOS to protect our office, and we have another deployment in production. We have the PCI DSS environment on which we have deployed the Fortinet Firewall.
What is most valuable?
I am satisfied with Fortinet FortiOS. It's a cool product and has a lot of UTM features. It has application control, web filtering, antivirus, IPS/IDS, DNS filtering, and many things in that firewall. It also has a web application firewall WAF feature. On the feature side, it's a good firewall.
What needs improvement?
It would be better if AWS instances were available. If I want to upgrade from T2.small to T2.medium, it should be available rather than having a big instance and paying a lot of money for that.
The issue is that we had deployed in AWS Cloud, and we were using a very small instance. Recently we wanted to move in-house and deploy it on the big instance because it was struggling with the RAM. If we use T2.small, we cannot upgrade it to the T2.medium. It has predefined instances in the marketplace with a lot of cost differences.
If I can increase the RAM, I have to choose the T3.large instance. If I'm paying $270 for the small instance, I have to pay more than double the cost for T3.large. It is about $850, and this is not good. So, it would be better if it was cheaper.
I think both AWS and Fortinet should think about that. They should provide it on lower instances as well. If I want to upgrade it from T2.small to T2.medium, it should be available, but it's a problem.
For how long have I used the solution?
I have been using Fortinet FortiOS since 2019, so more than three years.
What do I think about the stability of the solution?
Fortinet FortiOS is a stable product.
What do I think about the scalability of the solution?
Fortinet FortiOS is scalable.
How are customer service and support?
Technical support is good. When I create the ticket, they respond to me, engage the engineer, and support is good. No issue at all.
How was the initial setup?
The initial setup is not too complex; it's simple.
What's my experience with pricing, setup cost, and licensing?
It would be better if it were cheaper. We have the firewall in our office, and the license is expiring in 20 to 25 days. We got a quote for almost 80,000 Pakistani Rupees, which is a little costly.
Which other solutions did I evaluate?
If I compare Fortinet FortiOS with Cisco Adaptive Security Appliance (ASA), it's a cool product. The deployment of ASA is a little bit complex because it's GUI-based, and ASA also has a graphical user interface. But I still think Fortinet is a good firewall compared to ASA because if you want to use the IPS/IDS feature in the ASA, you have to deploy the management center and integrate it with the firewall, which is a little complex.
What other advice do I have?
I recommend this solution to potential users because it has many features, and it's a stable product.
On a scale from one to ten, I would give Fortinet FortiOS an eight.
Which deployment model are you using for this solution?
Hybrid Cloud
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
Senior Manager (Engineering Department) at a comms service provider with 10,001+ employees
Performs better than competing solutions
Pros and Cons
- "Performance-wise, I think FortiOS is much better than its Juniper counterpart. Based on our actual experience and performance metrics, FortiOS-based products are much better than Juniper."
- "They're using a lot of application-specific IC, so that may be causing some performance issues. And whenever a Fortinet adds new features, it can affect performance."
What is our primary use case?
We use FortiOS for the internet router and firewall for our customers' offices. In some of the smaller offices, there is only one FortiGate, but the hub site may have a pair of firewalls in an HA configuration.
What is most valuable?
Performance-wise, I think FortiOS is much better than its Juniper counterpart. Based on our actual experience and performance metrics, FortiOS-based products are much better than Juniper. We've experienced some trouble with Juniper in the past and some unstable, unpredictable performance on Juniper devices.
What needs improvement?
They're using a lot of application-specific IC, so that may be causing some performance issues. And whenever a Fortinet adds new features, it can affect performance. I don't handle implementation, so I have to ask my frontline engineers to implement new features, like software-defined WAN service. But I'm not sure these are stable and acceptable because this project is still in progress. FortiOS and all the other firewall products are adding SD-WAN service, and this kind of service needs a lot of resources from the fabrics, the hardware, and the software. Still, I think we have more confidence deploying this service with FortiOS than using the other brands, like Juniper.
For how long have I used the solution?
I've been using FortiOS for more than 15 years.
How are customer service and support?
Fortinet provides sufficient support, and their response time is reasonable.
How was the initial setup?
We have a team of around 10 engineers that manage FortiOS-based devices and all other firewall brands.
What's my experience with pricing, setup cost, and licensing?
FortiOS has a UTM feature, for which you have to buy an annual subscription. Most brands of firewalls will also have such a subscription.
What other advice do I have?
I rate FortiOS at least eight out of 10, and we recommend it to our customers.
Which deployment model are you using for this solution?
On-premises
Disclosure: My company has a business relationship with this vendor other than being a customer. Partner
Senior Network & Security Engineer at a tech services company with 51-200 employees
Easy to manage, effective intrusion prevention, and useful geographical visibility
Pros and Cons
- "The main features I find useful are intrusion prevention and web filtering. Additionally, the solution is easy to manage."
- "This solution has helped our organization prevent multiple attacks."
- "The solution could improve the log retention and reports."
What is our primary use case?
I am using Fortinet FortiOS in conjunction with a firewall for our network security.
How has it helped my organization?
This solution has helped our organization prevent multiple attacks. It has been beneficial having geographical visibility of what threat is being blocked in real-time.
What is most valuable?
The main features I find useful are intrusion prevention and web filtering. Additionally, the solution is easy to manage.
What needs improvement?
The solution could improve the log retention and reports.
For how long have I used the solution?
I have been using Fortinet FortiOS for approximately eight years.
What do I think about the stability of the solution?
The solution is stable.
What do I think about the scalability of the solution?
Fortinet FortiOS is scalable.
We have different size organizations using this solution and when determining if it fits the organization's it depends on their use case.
How are customer service and technical support?
We have been satisfied with the technical support.
How was the initial setup?
The initial setup is straightforward.
What was our ROI?
I have found Fortinet FortiOS to be a good investment.
What's my experience with pricing, setup cost, and licensing?
The price of Fortinet FortiOS has been reasonable.
Which other solutions did I evaluate?
We have evaluated other solutions, such as SonicWall, Palo Alto, Cyberoam, and Check Point before choosing Fortinet FortiOS.
What other advice do I have?
I would recommend this solution.
I rate Fortinet FortiOS a nine out of ten.
Which deployment model are you using for this solution?
On-premises
Disclosure: My company has a business relationship with this vendor other than being a customer. Implementor
Buyer's Guide
Download our free Fortinet FortiOS Report and get advice and tips from experienced pros
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Updated: June 2026
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Download our free Fortinet FortiOS Report and get advice and tips from experienced pros
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