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Cisco Secure Firewall vs Fortinet FortiOS comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Jun 15, 2025

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
7.5
Fortinet FortiGate is valued for affordability, cost savings, enhanced security, operational efficiency, quick implementation, and long-term ROI benefits.
Sentiment score
7.2
Cisco Secure Firewall provides security and efficiency benefits, though maintenance costs and ROI measurement pose challenges for some users.
Sentiment score
8.0
Fortinet FortiOS offers scalability, ease of use, and competitive pricing, enhancing ROI despite borderline scenarios in some cases.
Clients are now comfortable and not wasting productive hours on IT support.
The automation part is giving us a cost benefit and speed; we can react faster.
It's a very useful tool to mitigate and protect your enterprise.
The biggest return on investment when using Cisco Secure Firewall is that there's no waste in any infrastructure cost and licensing costs for us.
From my point of view, the biggest return on investment when using Cisco Secure Firewall is the single pane of glass, which is a huge plus for us.
The biggest return on investment for me when using Cisco Secure Firewall is reliability and robust network design.
Once it is deployed, I do not have to revisit or replace the hardware.
The pricing of FortiOS is competitive and reasonable compared to other leading products such as Palo Alto and Check Point.
Fortinet is strong in terms of cost and compatibility with other vendors.
 

Customer Service

Sentiment score
7.0
Fortinet FortiGate's customer service is praised for strong support but experiences inconsistent response times and varying support quality.
Sentiment score
7.5
Cisco Secure Firewall's support is praised for expertise and responsiveness, though some users report occasional service inconsistencies.
Sentiment score
7.7
Fortinet FortiOS support is praised for responsiveness but criticized for slow responses and underqualified teams on complex issues.
I would rate their support for FortiGate a nine out of ten.
They offer very accurate solutions.
The quick resolution of issues with Fortinet FortiGate is due to the support of the company and the fact that the equipment is easy to work with.
I have to provide many logs, yet problems remain unresolved, often requiring workarounds rather than solutions.
I have been working with them on firewalls, wireless, switching, and routing, and the support is the best.
They have expertise and provide solutions for the most difficult problems.
I would rate them nine or ten out of ten.
Fortinet technical support is very responsive and helpful.
Support engineers sometimes lack eagerness to assist with issues such as the memory problem.
 

Scalability Issues

Sentiment score
7.3
Fortinet FortiGate is scalable and flexible, though complex deployments and upgrade costs can pose challenges for users.
Sentiment score
7.2
Cisco Secure Firewall is praised for scalability but faces challenges with deployment costs, licensing, and hardware limitations.
Sentiment score
8.8
Fortinet FortiOS excels in scalability, supporting diverse environments and expansion, despite some hardware limitations requiring forward planning.
They scale up really well from smaller models like the FortiGate 40 and 50 to bigger sites with the FortiGate 100 for more throughput - up to enterprise datacenters.
The variation comes in terms of the interfaces and throughputs, but from a security perspective, you get the same benefit, irrespective of whether you have an entry-level unit or an enterprise.
We determine sizing based on multiple factors: number of users, available links, traffic types, server count, services in use, and whether services will be published.
Scalability presents a challenge.
Compared to FortiGate and Palo Alto, it lags in configuration and other aspects.
Even with the highest one, the 4600, we still face issues, particularly when transitioning between screens; it becomes very slow.
When customers' networks grow and needs expand, we can easily switch between models to trade up devices.
It allows for the expansion of users and devices without additional licensing costs.
Fortinet FortiOS is scalable, allowing the addition of users and firewalls as required.
 

Stability Issues

Sentiment score
7.9
Fortinet FortiGate is praised for stability and performance, with timely updates enhancing reliability in diverse configurations.
Sentiment score
7.2
Cisco Secure Firewall is stable and reliable, with minor issues quickly resolved through updates and proper management.
Sentiment score
7.1
Fortinet FortiOS is praised for high stability, with rare issues quickly resolved, outperforming competitors like Cisco and SonicWall.
We're experiencing 99.999% availability consistently.
I would rate the stability of Fortinet FortiGate a ten out of ten.
We have not had any problems with the operating systems or maintenance of subscriptions.
We have often encountered split-brain scenarios during failover processes and code upgrades, which have been persistent problems for us.
We work with a cluster with high availability, so if something goes wrong, we have it functioning.
Cisco Secure Firewall offers exceptional performance and stability.
While the product is largely stable, it sometimes faces memory issues in specific versions like 11 OE, which can be disruptive.
Stability is a seven out of ten because during version migrations, and sometimes with new versions, Fortinet is not as good.
I would rate the stability of FortiOS as an eight out of ten.
 

Room For Improvement

Fortinet FortiGate users find issues with support, cost, usability, and features like DLP and reporting compared to competitors.
Cisco Secure Firewall requires upgrades in performance, usability, cost, third-party integration, and advanced features to enhance user experience.
Fortinet FortiOS needs enhanced VPN, hardware compatibility, reduced update size, improved GUI functionality, and better pricing and reporting tools.
By providing an integrated solution, users would have access to all features and functionalities within a single window, eliminating the need to navigate through multiple windows.
Investing in a solution that can accommodate such growth would be more cost-effective than repeatedly purchasing new hardware.
The constant daily revisions necessitate meticulous identification of the relevant documents to prevent the use of outdated information that could jeopardize our environment.
My ongoing complaint for the last six years has been the lack of CLI functionality, which hinders my ability to work on the firewall, alongside concerns regarding deployment time.
Firepower Management Center is quite out of date compared to other vendors.
The integration between Cisco products themselves presents difficulties, such as SD-WAN configuration.
Fortinet FortiOS faces memory issues, which can lead to unexpected downtimes.
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.
Compared to other market leaders like Palo Alto and Check Point, FortiOS has many bugs in its initial releases.
 

Setup Cost

Fortinet FortiGate offers cost-effective pricing for SMBs, with manageable upfront costs and negotiable long-term discounts.
Cisco Secure Firewall is premium priced, with initial and ongoing costs often higher than competitors, but offers reputed quality.
Fortinet FortiOS is cost-effective initially but pricier for renewals, suitable for mid-sized to large enterprises.
The most expensive part is the renewal of the license subscription.
FortiGate is priced lower than Palo Alto.
Last year, I renewed the support for three years, which can sometimes be expensive but depends on the security benefits and how it helps us.
It's good to have them, however, it costs us a lot.
It's considered a premium, but people pay that price for Cisco.
There are a lot of in-place contracts for us that provide the benefit of discounts.
It is an affordable solution for us.
Fortinet products are somewhat pricey, similar to Cisco equivalents, however, they have justified their price point.
I am satisfied with the pricing, licensing, and setup costs of FortiOS, rating it nine out of ten compared to other familiar leading firewalls.
 

Valuable Features

Fortinet FortiGate offers comprehensive security features, easy management, high-performance support, and competitive pricing, making it highly valued by users.
Cisco Secure Firewall offers robust security, ease of management, scalability, and seamless integration, enhanced by Talos threat intelligence.
Fortinet FortiOS is praised for user-friendly features, robust threat detection, and seamless integration, making it a top security choice.
The firewall, IPS, and VPN functions are the most valuable features.
FortiGate provides solid protection against viruses, malware, and other threats.
In terms of security, we have not experienced any security flaws or loopholes, and it has proven to be quite stable.
What stands out positively about Cisco is their training and support, which has effectively prepared engineers to work with their products.
This is very important to my organization, as we work extensively with security because we are a bank, so we can keep the data safe.
Cisco Secure Firewall allows me to safeguard Layer 7 or Layer 3 and manage the security rules with the business needs of my organization.
It is user-friendly when it comes to turning on features, and it has been reliable and effective.
The threat intelligence in FortiOS is very high, and the system is scalable without additional licensing costs.
The solution offers good threat intelligence, which is crucial for our customers' security purposes.
 

Categories and Ranking

Fortinet FortiGate
Sponsored
Ranking in Firewalls
2nd
Average Rating
8.4
Reviews Sentiment
7.2
Number of Reviews
357
Ranking in other categories
Software Defined WAN (SD-WAN) Solutions (1st), WAN Edge (1st)
Cisco Secure Firewall
Ranking in Firewalls
6th
Average Rating
8.2
Reviews Sentiment
7.3
Number of Reviews
428
Ranking in other categories
Cisco Security Portfolio (4th)
Fortinet FortiOS
Ranking in Firewalls
22nd
Average Rating
8.4
Reviews Sentiment
7.9
Number of Reviews
80
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of June 2025, in the Firewalls category, the mindshare of Fortinet FortiGate is 21.4%, up from 17.8% compared to the previous year. The mindshare of Cisco Secure Firewall is 6.0%, up from 5.5% compared to the previous year. The mindshare of Fortinet FortiOS is 1.1%, up from 0.9% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Firewalls
 

Featured Reviews

Jorge Martínez - PeerSpot reviewer
Offers good SD-WAN capabilities and integrates easily with Fortinet devices
I am not part of the initial setup or deployment process since I work in presales. The setup or deployment is quite easy, as you can do a one-touch deployment that automatically connects to the FortiManager cloud when you connect it to a broadband or dynamic IP, allowing you to start the configuration from that point. We usually sell it for on-premises setups. It's on the cloud only when the client has virtual machines or their own service. Sometimes they have a service on the cloud like AWS, but it's more difficult to sell now because AWS has an e-commerce option where you can buy FortiGate directly. The only thing you need is someone to manage and configure.
Carlos Reis - PeerSpot reviewer
Proven reliability and strong support spark trust but system updates slow and complex
The Cisco Secure Firewall product in general has room for improvement. I had a problem this weekend working with one of them, and I think it's very specific, though I'm going to be more general with my answer. Cisco has the FMC as a centralized tool, but sometimes they have too many dependencies. I faced a problem this weekend because while trying to solve an issue with one of the company's firewall management centers, I couldn't update or install an update on the platform due to a remote site being down. The device got stuck in my queue. I had to cancel my maintenance because of that. Everyone was expecting me to fix many bugs, but because of one device, I had to cancel everything. Sometimes the ID is nice around Cisco, but another area they need to improve is the capability to manage multiple devices. The FMC manages many devices, but if I put too many, around 300 devices, it becomes very slow, and the system becomes heavy. When you compare that with solutions such as Palo Alto, Palo Alto can manage many more devices on the same type of platform. Cisco is better at managing things such as RMAs. They do that exceptionally, even with the support. However, when we're talking about the FMC itself, sometimes they have some small issues; the platform is very slow and has too many bugs in the versions. We constantly need to update the platform to maintain stability.
Harshama Silva - PeerSpot reviewer
We have improved network security with user-friendly controls and high threat intelligence
FortiOS is very user-friendly and easy to configure for L1, L2, and L3 personnel. Its web filtering, application control, and IPS features are very user-friendly, easy to manage, and deploy. The threat intelligence in FortiOS is very high, and the system is scalable without additional licensing costs. FortiOS allows us to expand the number of users and devices as our network needs grow.
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Comparison Review

it_user206346 - PeerSpot reviewer
Mar 11, 2015
Cisco ASA vs. Palo Alto Networks
Cisco ASA vs. Palo Alto: Management Goodies You often have comparisons of both firewalls concerning security components. Of course, a firewall must block attacks, scan for viruses, build VPNs, etc. However, in this post I am discussing the advantages and disadvantages from both vendors concerning…
 

Top Industries

By visitors reading reviews
Educational Organization
15%
Computer Software Company
15%
Comms Service Provider
7%
Manufacturing Company
6%
Educational Organization
41%
Computer Software Company
14%
University
5%
Manufacturing Company
4%
Computer Software Company
14%
Financial Services Firm
10%
Manufacturing Company
8%
Government
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
 

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 ...
Which is better - Fortinet FortiGate or Cisco ASA Firewall?
One of our favorite things about Fortinet Fortigate is that you can deploy on the cloud or on premises. Fortinet Fort...
How does Cisco's ASA firewall compare with the Firepower NGFW?
It is easy to integrate Cisco ASA with other Cisco products and also other NAC solutions. When you understand the Cis...
Which is better - Meraki MX or Cisco ASA Firewall?
Cisco Adaptive Security Appliance (ASA) software is the operating software for the Cisco ASA suite. It supports netw...
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...
What do you like most about Fortinet FortiOS?
The SSL VPN is fee for use is most attractive.
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.
 

Also Known As

FortiGate 60b, FortiGate 60c, FortiGate 80c, FortiGate 50b, FortiGate 200b, FortiGate 110c, FortiGate, Fortinet Firewall
Cisco Adaptive Security Appliance (ASA) Firewall, Cisco ASA NGFW, Adaptive Security Appliance, Cisco Sourcefire Firewalls, Cisco ASAv, Cisco Firepower NGFW Firewall
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
There are more than one million Adaptive Security Appliances deployed globally. Top customers include First American Financial Corp., Genzyme, Frankfurt Airport, Hansgrohe SE, Rio Olympics, The French Laundry, Rackspace, and City of Tomorrow.
Black Gold Regional Schools, Amadeus Hospitality, Jefferson County, Chunghwa Telecom, City of Boroondara, Dimension Data
Find out what your peers are saying about Cisco Secure Firewall vs. Fortinet FortiOS and other solutions. Updated: June 2025.
856,874 professionals have used our research since 2012.