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Cisco Secure Firewall vs Fortinet FortiGate vs Fortinet FortiOS comparison

 

Comparison Buyer's Guide

Executive Summary

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
7.2
Cisco Secure Firewall offers improved security and efficiency, but cost and ROI vary based on deployment and usage.
Sentiment score
7.1
Fortinet FortiGate delivers cost efficiency, rapid ROI, and enhanced security, reducing downtime and operational expenses for users.
Sentiment score
8.0
Fortinet FortiOS offers competitive pricing, easy scalability, and reliable security, resulting in solid ROI and reduced upgrade costs.
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.
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.
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
7.5
Cisco Secure Firewall support is highly rated for knowledgeable assistance, though response times and access vary based on contracts.
Sentiment score
6.9
Fortinet FortiGate support receives mixed reviews, with praise for expertise but criticism for inconsistent response times and language barriers.
Sentiment score
7.8
Fortinet FortiOS support is helpful but inconsistent, with quick basic solutions, delays on complex issues, and documentation needing improvement.
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.
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 would rate the technical support for Fortinet FortiGate a ten out of ten.
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
7.2
Cisco Secure Firewall offers scalability and integration, though licensing complexity and scalability challenges in growth may concern some users.
Sentiment score
7.3
Fortinet FortiGate is highly rated for scalability, accommodating growth efficiently, though hardware upgrades may be needed for expansion.
Sentiment score
8.6
Fortinet FortiOS offers scalable solutions for varying business sizes, though some hardware upgrades may be needed for expansion.
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.
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.
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
7.2
Cisco Secure Firewall is highly reliable with minimal outages, though occasional upgrade issues are typically fixed with updates.
Sentiment score
7.8
FortiGate is praised for its robust reliability, minor update issues, and consistently stable performance across various use cases.
Sentiment score
7.5
Fortinet FortiOS is stable and reliable, outperforming alternatives, with any issues mainly due to configuration challenges.
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.
We're experiencing 99.999% availability consistently.
I would rate the stability of Fortinet FortiGate a ten out of ten.
The solution is very stable.
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

Cisco Secure Firewall faces criticism for its complex GUI, high costs, and demands better features, integration, and performance improvements.
Fortinet FortiGate users seek lower fees, better interface, integration, support, consistent updates, and improved documentation and features.
Fortinet FortiOS users want improved usability, better management, enhanced security features, and more efficient support, especially for 60D models.
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.
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.
While Fortinet claims to offer a comprehensive network solution, it falls short in addressing computer application issues, particularly server security.
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

Cisco Secure Firewall is costly but offers robust support and reliability; licensing complexity can be mitigated by smart licensing.
Fortinet FortiGate is competitively priced, offering cost-effective options, though renewal costs and additional features may increase expenses.
Fortinet FortiOS pricing is moderate and scalable, with renewal costs potentially high despite competitive initial bundling offers.
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.
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 is about 20% cheaper.
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

Cisco Secure Firewall provides robust security, scalability, and central management, with intuitive tools for efficient threat protection and network monitoring.
Fortinet FortiGate is valued for its security features, ease of use, flexibility, reliability, and affordability across organizations.
Fortinet FortiOS offers ease of use, robust security features, scalability, and cost-effectiveness, ideal for large-scale deployments.
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.
In terms of security, we have not experienced any security flaws or loopholes, and it has proven to be quite stable.
FortiGate has helped reduce the risk of cyberattacks that might disrupt our client's production.
These features help reduce our downtime, manage the ISPs, and deploy SLAs for all the website traffic.
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.
 

Mindshare comparison

As of July 2025, in the Firewalls category, the mindshare of Cisco Secure Firewall is 6.2%, up from 5.5% compared to the previous year. The mindshare of Fortinet FortiGate is 21.2%, up from 17.7% 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

Phil Shiflett - PeerSpot reviewer
Unified policies streamline network management but complex licensing requires attention
Cisco Secure Firewall has some growth opportunities in terms of visibility and control capabilities regarding managing encrypted traffic. It has the ability to analyze encrypted traffic, and there is potential for more integration with APIs and AI to enhance these capabilities. Cisco Secure Firewall needs improvement in deployment time and the capability to access the CLI during support calls. I often encounter issues when technical support uses a CLI that is not familiar to me while troubleshooting through the GUI. 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. For the next release, they should look at the features offered by competitors such as Fortinet, including the ability to perform packet capture directly from the interface. If they enhanced their troubleshooting efficiency related to packet capture for each specific rule, it would simplify the process significantly.
Vasu Gala - PeerSpot reviewer
A stable solution with an intuitive interface and quick customer service
I have been working with Fortinet FortiGate, WatchGuard, Sophos, and SonicWall. I'm not as comfortable with SonicWall because of their UI and limitations. I prefer Fortinet above all other options. When it comes to configuration, I am confident in my ability to handle various tasks, including creating policies such as firewall rules, web policies, and application policies. Additionally, I can configure VPNs and implement load balancing, among other tasks. Overall, I feel much more comfortable working with Fortinet. Fortinet has made significant improvements by integrating AI with firewalls for threat analysis and prevention. In the past 2-3 years, they have launched FortiSASE and SIEM, and they also provide SOC services. Both Palo Alto and Fortinet FortiGate are excellent. While Fortinet FortiGate comes at higher prices, the functionality and support justify the cost. They promptly resolve firmware issues and inform all support providers about configuration changes.
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_user216600 - PeerSpot reviewer
Jan 3, 2016
Sophos UTM vs. Fortinet FortiGate
I have used both Sophos and Fortinet products in production and I have found the Sophos UTM appliances (hardware and virtual) to be a better fit most of the time -- with a few caveats which I will touch on below. In both instances, the transition from TMG will be mostly straightforward. The main…
 

Top Industries

By visitors reading reviews
Educational Organization
31%
Computer Software Company
16%
University
6%
Manufacturing Company
5%
Computer Software Company
15%
Educational Organization
11%
Comms Service Provider
8%
Manufacturing Company
7%
Computer Software Company
13%
Financial Services Firm
9%
Manufacturing Company
8%
Government
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
 

Questions from the Community

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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

Cisco Adaptive Security Appliance (ASA) Firewall, Cisco ASA NGFW, Adaptive Security Appliance, Cisco Sourcefire Firewalls, Cisco ASAv, Cisco Firepower NGFW Firewall
FortiGate 60b, FortiGate 60c, FortiGate 80c, FortiGate 50b, FortiGate 200b, FortiGate 110c, FortiGate, Fortinet Firewall
No data available
 

Overview

 

Sample Customers

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.
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
Black Gold Regional Schools, Amadeus Hospitality, Jefferson County, Chunghwa Telecom, City of Boroondara, Dimension Data
Find out what your peers are saying about Netgate, Fortinet, OPNsense and others in Firewalls. Updated: July 2025.
860,711 professionals have used our research since 2012.