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Fortinet FortiOS vs SonicWall TZ comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Jan 25, 2026

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
4.2
SonicWall TZ offers quick ROI with low costs, boosts productivity, enhances security, and provides cost-effective benefits for small businesses.
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
That is a reason to buy a firewall, and it is challenging to put a monetary value on security.
Administration IT at a engineering 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
5.0
SonicWall TZ customer service has mixed reviews, praised for availability but criticized for wait times and problem resolution.
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.
Customer service is excellent.
Administration IT at a engineering company with 11-50 employees
SonicWall Sentry team will manage our firewall.
Project Engineer at IT Solution
I would rate SonicWall TZ's technical support as good but not at the level of other enterprise-level firewall vendors out there.
Senior Pre-sales and Solutions Engineer - Cyber Security at Enterprise Technology (Pvt) Ltd
 

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
6.6
SonicWall TZ is scalable for small to medium environments, but accurate sizing and cost concerns are crucial for larger needs.
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
Whenever we want to change the licensing, we can do it at any time.
Project Engineer at IT Solution
There are some problems with the scalability of SonicWall TZ with the firmware.
Senior Pre-sales and Solutions Engineer - Cyber Security at Enterprise Technology (Pvt) Ltd
 

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
6.5
SonicWall TZ is stable with minor issues; performance improves with updates, though updates can sometimes temporarily affect stability.
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
In terms of stability, SonicWall doesn't have performance issues.
CTO at Exceed NetSec LLC
SonicWall TZ rates 10 out of 10 for stability.
CEO at Kapstone Technological Services LLP
SonicWall TZ is definitely stable and offers a good value for money.
Administration IT at a engineering 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.
SonicWall TZ needs user interface improvements, better threat intelligence, enhanced support, bundled VPN licenses, and stability and performance updates.
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
Integration with other vendors, especially with VPNs, can be challenging and requires more effort when configuring.
CTO at Exceed NetSec LLC
What could be improved about SonicWall TZ is the threat intelligence, which by far is not at the level of vendors such as Fortinet, Palo Alto Networks, and Check Point.
Senior Pre-sales and Solutions Engineer - Cyber Security at Enterprise Technology (Pvt) Ltd
SonicWall TZ could benefit from newer technology.
Administration IT at a engineering 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.
SonicWall TZ offers competitive pricing and flexible licensing, but total costs can rise due to subscriptions and feature add-ons.
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
More licenses are required to purchase the perpetual license for SSL VPN and Global VPN.
Pre Sales at ITCG SOlutions Pvt Ltd
When comparing similar products across vendors, there may be a small difference in cost.
CTO at Exceed NetSec LLC
I would also position its pricing as a three, where one is the lowest price and ten is the highest.
Administration IT at a engineering company with 11-50 employees
 

Valuable Features

Fortinet FortiOS is praised for UTM, user-friendly interface, robust security, excellent performance, cost-effectiveness, and seamless management.
SonicWall TZ provides robust security, user-friendly management, and cost-effective solutions with VPN, filtering, and threat prevention.
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
For SMB segments, SonicWall performs well.
CTO at Exceed NetSec LLC
It was beneficial during COVID for remote work through its VPN functionality.
Administration IT at a engineering company with 11-50 employees
The advanced gateway security features such as web filter, application control filter, IPS, ideas, gateway antivirus, anti-spyware, and botnet filter are valuable.
Pre Sales at ITCG SOlutions Pvt Ltd
 

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
SonicWall TZ
Ranking in Firewalls
26th
Average Rating
8.2
Reviews Sentiment
6.5
Number of Reviews
86
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 SonicWall TZ is 1.8%, down from 3.0% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Firewalls Mindshare Distribution
ProductMindshare (%)
Fortinet FortiOS1.1%
SonicWall TZ1.8%
Other97.1%
Firewalls
 

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.
Fernando Kavindra Fernando - PeerSpot reviewer
Senior Pre-sales and Solutions Engineer - Cyber Security at Enterprise Technology (Pvt) Ltd
Web filtering and traffic balancing have improved security for SMBs but threat insight still needs work
I assess the machine learning capabilities of SonicWall TZ in proactive threat detection to not be at the level of other vendors such as Palo Alto Networks, Fortinet, and Check Point. It is somewhere in between, so I would not recommend it for a large enterprise-level organization to rely on because it is not at that level. SonicWall TZ's content filtering service is reliable. We have used it, but it is not very reliable compared to brands such as Fortinet, Palo Alto Networks, or Check Point. What could be improved about SonicWall TZ is the threat intelligence, which by far is not at the level of vendors such as Fortinet, Palo Alto Networks, and Check Point. Their threat intelligence needs to be improved, as does the GUI, which is not as user-friendly compared to devices such as Fortinet. They could learn from their competitors by making the product more user-friendly. The product interface is not that user-friendly. By adopting a more user-friendly GUI, improving threat intelligence, and enhancing the available guides would be beneficial. In my understanding, in some cases, the KB articles and knowledge articles were not that efficient. They were useful, but they could have been more precise with the knowledge base articles. They need to provide more information about SonicWall TZ, specifically more documentation and more troubleshooting articles. Other than the threat intelligence and the user-friendly GUI, there are no other additional features that I can think of for SonicWall TZ in the future or at least in the next release to make it more competitive.
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Top Industries

By visitors reading reviews
Construction Company
11%
Manufacturing Company
8%
Comms Service Provider
8%
Financial Services Firm
8%
Computer Software Company
9%
Comms Service Provider
8%
Manufacturing Company
8%
Construction Company
8%
 

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 Business64
Midsize Enterprise15
Large Enterprise14
 

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...
Would you choose Fortinet Fortigate or Sonicwall TZ?
I’ll say it depends on your needs. Fortinet FortiGate and SonicWall TZ are both next-gen firewalls (NGFW) with similar basic features. However, Fortinet offers more performance, scalability, and in...
What is your experience regarding pricing and costs for SonicWall TZ?
The price is normal. It is a nominal cost for an SMB TZ used for SMB businesses. However, more licenses are required to purchase the perpetual license for SSL VPN and Global VPN. Only one SSL VPN a...
What needs improvement with SonicWall TZ?
I assess the machine learning capabilities of SonicWall TZ in proactive threat detection to not be at the level of other vendors such as Palo Alto Networks, Fortinet, and Check Point. It is somewhe...
 

Also Known As

No data available
Dell SonicWALL TZ
 

Overview

 

Sample Customers

Black Gold Regional Schools, Amadeus Hospitality, Jefferson County, Chunghwa Telecom, City of Boroondara, Dimension Data
AeroM_xico Delta TechOps, Unimat
Find out what your peers are saying about Fortinet FortiOS vs. SonicWall TZ and other solutions. Updated: June 2026.
904,016 professionals have used our research since 2012.