--- title: FortiOS Reviews meta_title: 'FortiOS Reviews 2026: Details, Pricing, & Features | G2' meta_description: Filter 52 reviews by the users' company size, role or industry to find out how FortiOS works for a business like yours. aggregate_rating: rating_value: 4.3 review_count: 52 scale: '5' date_modified: '2026-11-08' parent_category: name: IT Infrastructure url: https://www.g2.com/categories/it-infrastructure ---

FortiOS Reviews & Product Details

Value at a Glance

Averages based on real user reviews.

Time to Implement

2 months

Return on Investment

9 months

User Insights

Average based on 52 real user reviews.

Implementation Time

2 months

Perceived Cost

$$$$$

FortiOS Reviews (52)

Reviews

FortiOS Reviews (52)

4.3
52 reviews

What do users say?

Generated using AI from real user reviews

Pros & Cons

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NS
Nisarahmed S.
Network Engineer ||
Enterprise (> 1000 emp.)
"Easy Deployment and Backup with a Straightforward Setup"
4.5/5
What do you like best about FortiOS?

It’s easy to deploy and to back up the configuration. It’s also straightforward to understand, explore, and get familiar with. Review collected by and hosted on G2.com.

What do you dislike about FortiOS?

It needs to be updated with every new release, and any bugs should be resolved. Review collected by and hosted on G2.com.

AB
Ash B.
Director of IT
Small-Business (50 or fewer emp.)
"Frequent Firmware Updates, Bugs, and Performance Issues Hold It Back"
1.5/5
What do you like best about FortiOS?

It’s easy to use and cost-effective, and the support team is responsive. Review collected by and hosted on G2.com.

What do you dislike about FortiOS?

Constant firmware updates seem to be needed because of careless coding, ongoing bugs, and vulnerabilities. Performance also sometimes suffers. Review collected by and hosted on G2.com.

Juan  T.
JT
Juan T.
DevOps
Computer Software
Mid-Market (51-1000 emp.)
"Ease and Security in Network"
5/5
What do you like best about FortiOS?

The best part is the interface, which allows me to easily manage my rules and my Forti devices. Review collected by and hosted on G2.com.

What do you dislike about FortiOS?

The difficult part sometimes is having a bit more detailed documentation or having some example for configurations. Review collected by and hosted on G2.com.

Nisar A.
NA
Nisar A.
System Analyst
Mid-Market (51-1000 emp.)
"Unified Dashboard Makes Management Effortless"
4/5
What do you like best about FortiOS?

FortiOS brings together all Fortinet products into a single, unified dashboard, making it easy to manage all settings from one place. Review collected by and hosted on G2.com.

What do you dislike about FortiOS?

The menu is quite complex and takes a considerable amount of time to navigate. Review collected by and hosted on G2.com.

Tariq T.
TT
Tariq T.
IT security consultant - مستشار أمن المعلومات
Mid-Market (51-1000 emp.)
"Handy TAB Auto-Complete Makes Command Syntax Easy"
4/5
What do you like best about FortiOS?

You can get a hint for the next word in a command by pressing the TAB key. This can help you remember the correct command syntax. Review collected by and hosted on G2.com.

What do you dislike about FortiOS?

It’s somewhat hard to learn at first, but there’s always help available when I need it. Review collected by and hosted on G2.com.

GS
Gibrain S.
information security engineer
Small-Business (50 or fewer emp.)
"Efficient Module Integration, Especially Fortigate with ZTNA"
3.5/5
What do you like best about FortiOS?

Integration with different modules from the manufacturer—for example, Fortigate with ZTNA—makes it very efficient Review collected by and hosted on G2.com.

What do you dislike about FortiOS?

What's not intuitive is that it's a bit complicated to understand how to configure a firewall compared to other manufacturers Review collected by and hosted on G2.com.

Amar K.
AK
Amar K.
IT Manager
Media Production
Mid-Market (51-1000 emp.)
"Unmatched Reliability and Efficiency with FortiOS"
5/5
What do you like best about FortiOS?

FortiOS stands out as the most reliable and efficient firewall operating system I have used, thanks to its unified security features, consistent performance, and user-friendly interface. Review collected by and hosted on G2.com.

What do you dislike about FortiOS?

Some settings in the GUI are not very intuitive, and to access the full range of features, I sometimes have to switch to the CLI for greater control. Review collected by and hosted on G2.com.

Nikunj K.
NK
Nikunj K.
Consultant
Mid-Market (51-1000 emp.)
Originally submitted 10/11/2025
"Fortios experience"
4.5/5
What do you like best about FortiOS?

FortiOS is quite stable. I have been using FortiOS and FortiGate UTM for nearly 14 years now. Review collected by and hosted on G2.com.

What do you dislike about FortiOS?

The terminal window is not very intuitive to use. I believe Fortisos should consider making it more dynamic. However, I understand that since the focus is on security, they may have chosen to keep it this way. Review collected by and hosted on G2.com.

Verified User in Computer & Network Security
AC
Verified User in Computer & Network Security
Mid-Market (51-1000 emp.)
"Network Best solution UTM work for Large SME"
4.5/5
What do you like best about FortiOS?

Its a Utm firewall Operating system or firmware os setup to control ISP and network according to organisation requirment Review collected by and hosted on G2.com.

What do you dislike about FortiOS?

no I don't dislike this product its user friendly Review collected by and hosted on G2.com.

Zahid A.
ZA
Zahid A.
Senior Network Security Engineer
Mid-Market (51-1000 emp.)
"Easy to Manage, Cost-Effective NGFW Choice"
4/5
What do you like best about FortiOS?

Easy to manage

Economical option in NGFW category Review collected by and hosted on G2.com.

What do you dislike about FortiOS?

There’s no option to save the configuration or commit changes; if you modify anything, it gets applied immediately. Review collected by and hosted on G2.com.

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GU
Guest User
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Last activity over 1 year ago

What is FortiOS used for?

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Pricing Insights

Averages based on real user reviews.

Time to Implement

2 months

Return on Investment

9 months

Average Discount

10%

FortiOS Features
RAM management
I/O management
Data backup
System operations monitoring