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Fortinet FortiOS vs Palo Alto Networks K2-Series comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Sep 16, 2024

Review summaries and opinions

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

ROI

Sentiment score
6.3
Fortinet FortiOS offers cost-effective, scalable security, with competitive pricing and partnerships, enhancing ROI compared to top brands.
Sentiment score
6.2
Palo Alto Networks K2-Series improved cybersecurity, efficiency, and cost savings through enhanced visibility, automation, and reduced incident response times.
Once it is deployed, I do not have to revisit or replace the hardware.
Network Administrator at a educational organization with 501-1,000 employees
The pricing of FortiOS is competitive and reasonable compared to other leading products such as Palo Alto and Check Point.
Senior Manager at ITX360 (Pvt) Ltd
Fortinet is strong in terms of cost and compatibility with other vendors.
Technology Consultant at 1ware
For CN-Series, there is no competitor which works the same way as Palo Alto does.
Principle Cloud Architect at a tech services company with 11-50 employees
 

Customer Service

Sentiment score
8.2
Fortinet FortiOS support is responsive and helpful but sometimes slow with complex issues, lacking top-tier vendor standards.
Sentiment score
8.0
Palo Alto Networks K2-Series support is praised for vendor responsiveness and expertise, though partner support is less reliable.
I would rate them nine or ten out of ten.
Technology Consultant at 1ware
Fortinet technical support is very responsive and helpful.
Senior Manager at ITX360 (Pvt) Ltd
Support engineers sometimes lack eagerness to assist with issues such as the memory problem.
Director, IT Infrastructure Department at Zemen Bank S.C.
I would rate tech support from Palo Alto Networks at around eight out of ten points because we had dedicated people assigned to us.
Principle Cloud Architect at a tech services company with 11-50 employees
We get Gold support from them, and they are pretty good.
Design engineer at a construction company with 201-500 employees
I would rate the technical support for the Palo Alto Networks K2-Series from Palo Alto as nine out of ten points.
Director at MICROLOGIC NETWORKS PRIVATE LIMITED
 

Scalability Issues

Sentiment score
8.2
Fortinet FortiOS is highly scalable, adapting to different organizations, supporting growth and global deployments, yet may need hardware upgrades.
Sentiment score
7.8
Palo Alto Networks K2-Series offers scalable, flexible solutions for organizations, excelling in network expansion and handling diverse environments.
When customers' networks grow and needs expand, we can easily switch between models to trade up devices.
Technology Consultant at 1ware
It allows for the expansion of users and devices without additional licensing costs.
Senior Manager at ITX360 (Pvt) Ltd
We have been using Fortinet for bandwidth shaping and many other bandwidth-related functions.
Associate Director IT Operations at Procento
Vertical scaling allows you to purchase more powerful devices with additional RAM, compute, and larger model form factors.
Principle Cloud Architect at a tech services company with 11-50 employees
 

Stability Issues

Sentiment score
7.8
Fortinet FortiOS is praised for stability, with minor issues usually tied to configurations or external factors, not the system.
Sentiment score
7.8
Palo Alto Networks K2-Series is praised for exceptional stability and dependability, with minor configuration and maintenance issues reported.
While the product is largely stable, it sometimes faces memory issues in specific versions like 11 OE, which can be disruptive.
Director, IT Infrastructure Department at Zemen Bank S.C.
There were no lags, there were no issues, and no hanging of the firewall.
Associate Director IT Operations at Procento
Stability is a seven out of ten because during version migrations, and sometimes with new versions, Fortinet is not as good.
Technology Consultant at 1ware
Palo Alto typically doesn't have many glitches.
Principle Cloud Architect at a tech services company with 11-50 employees
 

Room For Improvement

Fortinet FortiOS requires improvements in VPN, pricing, compatibility, UI, security features, support, updates, deployment, and pricing consistency.
Palo Alto Networks K2-Series needs better pricing, integration, usability, and AI to address user demands for support and scalability.
Fortinet FortiOS faces memory issues, which can lead to unexpected downtimes.
Director, IT Infrastructure Department at Zemen Bank S.C.
There should be more documentation on how to use the CLI or how to perform CLI versions of tasks that can be done through the GUI.
Network Administrator at a educational organization with 501-1,000 employees
Compared to other market leaders like Palo Alto and Check Point, FortiOS has many bugs in its initial releases.
Senior Manager at ITX360 (Pvt) Ltd
Enhancing web traffic protection would be a great upgrade.
enterprise architect at a tech services company with 1-10 employees
L1 engineers cannot work on the Palo Alto Networks K2-Series because it's too complex, which requires L2 and above level of engineers.
Director at MICROLOGIC NETWORKS PRIVATE LIMITED
With AI, if there is a Precision AI bundle that you're planning on exploring, then that definitely needs a significant uplift because currently it doesn't work for all the known models.
Principle Cloud Architect at a tech services company with 11-50 employees
 

Setup Cost

Fortinet FortiOS is often pricey but justified by features, with agreements influencing costs, suitable for mid-size businesses.
Palo Alto Networks K2-Series is expensive, suitable for large enterprises, with straightforward licensing but requires frequent price negotiations.
It is an affordable solution for us.
Technology Consultant at 1ware
Fortinet products are somewhat pricey, similar to Cisco equivalents, however, they have justified their price point.
Network Administrator at a educational organization with 501-1,000 employees
I am satisfied with the pricing, licensing, and setup costs of FortiOS, rating it nine out of ten compared to other familiar leading firewalls.
Senior Manager at ITX360 (Pvt) Ltd
It's a little bit expensive.
enterprise architect at a tech services company with 1-10 employees
The pricing for the Palo Alto Networks K2-Series solution is affordable.
Director at MICROLOGIC NETWORKS PRIVATE LIMITED
 

Valuable Features

Fortinet FortiOS is praised for UTM, user-friendly interface, robust security, excellent performance, cost-effectiveness, and seamless management.
Palo Alto Networks K2-Series provides advanced, scalable security with AI-driven features, strong threat prevention, and user-friendly management.
It is user-friendly when it comes to turning on features, and it has been reliable and effective.
Network Administrator at a educational organization with 501-1,000 employees
The threat intelligence in FortiOS is very high, and the system is scalable without additional licensing costs.
Senior Manager at ITX360 (Pvt) Ltd
The solution offers good threat intelligence, which is crucial for our customers' security purposes.
Technology Consultant at 1ware
Overall, the K2-Series helps in much more protection, and dashboard compliances are being met.
Director at MICROLOGIC NETWORKS PRIVATE LIMITED
We had configured dynamic user groups and App-ID based policies, which makes it all Zero Trust.
Principle Cloud Architect at a tech services company with 11-50 employees
Mainly, it is very easy to understand, and the logs are very good.
Design engineer at a construction company with 201-500 employees
 

Categories and Ranking

Fortinet FortiOS
Ranking in Firewalls
18th
Average Rating
8.4
Reviews Sentiment
8.0
Number of Reviews
82
Ranking in other categories
No ranking in other categories
Palo Alto Networks K2-Series
Ranking in Firewalls
35th
Average Rating
8.4
Reviews Sentiment
7.4
Number of Reviews
35
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of July 2026, in the Firewalls category, the mindshare of Fortinet FortiOS is 1.1%, up from 1.1% compared to the previous year. The mindshare of Palo Alto Networks K2-Series is 0.4%, up from 0.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Firewalls Mindshare Distribution
ProductMindshare (%)
Fortinet FortiOS1.1%
Palo Alto Networks K2-Series0.4%
Other98.5%
Firewalls
 

Q&A Highlights

DL
Works at KLA
Mar 23, 2021
 

Featured Reviews

MS
Associate Director IT Operations at Procento
Single-pane management has simplified firewall control and has improved risk mitigation
I would not say that Fortinet FortiOS is not very scalable. Generally, what happens is that for enterprises, we hire consultants who do the capacity planning and sizing to determine what kind of firewalls to put in place. At the same time, it is not only the number of users; it also depends on the number of WAN links coming in and everything, because we have been using Fortinet for bandwidth shaping and many other bandwidth-related functions. They should improve their machine learning AI capabilities of Fortinet FortiOS because there is too much competition. Other players are also improving and making a lot of changes in their UI and overall operating system.
TJ
Principle Cloud Architect at a tech services company with 11-50 employees
Has provided strong traffic visibility and efficient policy management for advanced network environments
Palo Alto Networks K2-Series could be improved, though I don't think of much. I'm unsure how widespread the adoption for K2-Series alone is. Looking at the base Palo Alto capabilities, they are going in the right direction. K2 specifically about its efficacy with all these 5G protocols, the GPRS tunneling protocol performed without many hiccups during testing. With AI, if there is a Precision AI bundle that you're planning on exploring, then that definitely needs a significant uplift because currently it doesn't work for all the known models. There are many false positives that need to be addressed. While it's still ahead of its competitors, on the AI security side, there is quite a room for improvement.
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Answers from the Community

DL
Works at KLA
Mar 23, 2021
Mar 23, 2021
In the best tradition of these questions, Feature-wise both are quite similar, but each has things it's better at, it kind of depends what you value most. PA is good at app control, web filtering and such like, they have always been top of the pile there. The GUI is very good, and their product is very user-focused. Fortinet is good for scalability and predictable high throughput (ASICs in the...
2 out of 4 answers
AT
Managing Director at FOX DATA
Mar 20, 2021
Hi, Both FT and PA have compelling features for large Enterprises. I would like to add a few good points about Fortinetwhich might be helpful ( from my 13 years of engagement with them as Distributor and Partner) Fortinet:  Have higher throughput; which comes with competitive rates Wide range of models to select to meet your requirement, without spending heavliy Outstanding customer support and very active customer care team Easly available skilled resources from the channel for deployment and post-implementation support  Regards Abhilash
LD
CTO & co-Founder at Anevia
Mar 22, 2021
Hi PaloAlto is better when working on app control feature and special virtual wire links. Execpt that specific point, Fortinet is above. Best Regards, Damien
 

Top Industries

By visitors reading reviews
Construction Company
11%
Manufacturing Company
8%
Comms Service Provider
8%
Financial Services Firm
8%
Performing Arts
15%
Construction Company
14%
Financial Services Firm
12%
Marketing Services Firm
9%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business43
Midsize Enterprise13
Large Enterprise23
By reviewers
Company SizeCount
Small Business15
Midsize Enterprise7
Large Enterprise13
 

Questions from the Community

Features comparison between Palo Alto and Fortinet firewalls
In the best tradition of these questions, Feature-wise both are quite similar, but each has things it's better at, it kind of depends what you value most. PA is good at app control, web filtering a...
What is your experience regarding pricing and costs for Fortinet FortiOS?
I rate the pricing for FortiOS as eight or nine out of ten. It is an affordable solution for us.
What needs improvement with Fortinet FortiOS?
I would not say that Fortinet FortiOS is not very scalable. Generally, what happens is that for enterprises, we hire consultants who do the capacity planning and sizing to determine what kind of fi...
What is your experience regarding pricing and costs for Palo Alto Networks K2-Series?
The pricing for the Palo Alto Networks K2-Series solution is affordable and there are no complaints about the licensing.
What needs improvement with Palo Alto Networks K2-Series?
Palo Alto Networks K2-Series could be improved, though I don't think of much. I'm unsure how widespread the adoption for K2-Series alone is. Looking at the base Palo Alto capabilities, they are goi...
What is your primary use case for Palo Alto Networks K2-Series?
I had a particular use case with Palo Alto Networks K2-Series at an oil and gas company. This was primarily because they didn't have last-mile connectivity to a couple of their locations, as these ...
 

Overview

 

Sample Customers

Black Gold Regional Schools, Amadeus Hospitality, Jefferson County, Chunghwa Telecom, City of Boroondara, Dimension Data
State of North Dakota, SEGA, Alameda County Office of Education, Temple University, VERGE, CAME
Find out what your peers are saying about Fortinet FortiOS vs. Palo Alto Networks K2-Series and other solutions. Updated: June 2026.
902,988 professionals have used our research since 2012.