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Cisco IOS Security vs Fortinet FortiGate comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Sep 16, 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
7.4
Cisco IOS Security delivered significant ROI through improved routing, security, stability, and cost-efficiency, despite competitive vendor pressures.
Sentiment score
5.9
Fortinet FortiGate offers strong security, cost efficiency, and easy integration, saving organizations up to 30% on data costs.
The return on investment is satisfactory with Cisco products as they have long lifespans, and our customers are satisfied with them.
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.
 

Customer Service

Sentiment score
6.7
Cisco IOS Security support is generally praised for speed and skill, though some report delays and complexity in access.
Sentiment score
6.6
Fortinet FortiGate support is generally effective, but some users report delays and issues with complex problem resolution and communication.
My impression is that the support quality has deteriorated over time.
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.
 

Scalability Issues

Sentiment score
7.4
Cisco IOS Security offers scalable, enterprise-level solutions but may increase costs and limit universality due to required hardware.
Sentiment score
7.1
Fortinet FortiGate efficiently scales for SMEs, though hardware upgrades can be challenging, with virtual deployments offering flexibility.
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.
 

Stability Issues

Sentiment score
7.6
Cisco IOS Security is generally reliable with occasional issues, frequently updated for stability, scoring 7-10 in satisfaction.
Sentiment score
7.7
Fortinet FortiGate is praised for its dependable stability, minimal downtime, and robust performance, especially with regular firmware updates.
We find Cisco products stable and thoroughly tested before new software or firmware versions are released.
I find Cisco IOS Security to be a very stable product.
We're experiencing 99.999% availability consistently.
I would rate the stability of Fortinet FortiGate a ten out of ten.
Currently, we are experiencing a general outage of one of the main internet service providers of the Dominican Republic, and we have not been impacted in our operations because with SD-WAN, we have another internet service provider and we are working with the second WAN connection without any disruption.
 

Room For Improvement

Cisco IOS Security struggles with integration, usability, cost, lacking features, complex licensing, performance, and requires enhancement and support.
Users seek improvements in FortiGate's performance, web interface, reporting, documentation, licensing, and training resources.
Cisco changes their licensing policy quite frequently, which is becoming confusing and complicated.
Investing in a solution that can accommodate such growth would be more cost-effective than repeatedly purchasing new hardware.
While Fortinet claims to offer a comprehensive network solution, it falls short in addressing computer application issues, particularly server security.
When considering Sophos XG, which we also use, the logging and reporting functionality is notably more efficient.
 

Setup Cost

Cisco IOS Security is costly, favoring medium to large enterprises with longer-term savings over SMB challenges.
Fortinet FortiGate offers robust features at a competitive price but can be costly, especially with licenses; long-term pricing negotiation advised.
The cost of Cisco IOS Security for customers is on the higher end of pricing compared to the competition, depending on the targeted customers.
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 offers cost savings as it is generally cheaper than the competition.
It is about 20% cheaper.
 

Valuable Features

Cisco IOS Security offers scalable, stable solutions with VPN, AAA, firewall integration, and user-friendly management for high-demand environments.
Fortinet FortiGate provides robust security, seamless integration, user-friendly interface, and cost-effective advanced threat management for diverse network environments.
This solution, called Network Access Controller, handles authentication, authorization, and accounting for devices accessing the network.
The best features of Cisco IOS Security are its integration with software management tools such as Cisco DNA Center and Cisco ICE, which provide centralized policy and network access control.
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.
 

Categories and Ranking

Cisco IOS Security
Ranking in Firewalls
24th
Ranking in Intrusion Detection and Prevention Software (IDPS)
14th
Average Rating
8.0
Reviews Sentiment
6.8
Number of Reviews
49
Ranking in other categories
No ranking in other categories
Fortinet FortiGate
Ranking in Firewalls
1st
Ranking in Intrusion Detection and Prevention Software (IDPS)
1st
Average Rating
8.4
Reviews Sentiment
6.9
Number of Reviews
575
Ranking in other categories
Secure Web Gateways (SWG) (2nd), Software Defined WAN (SD-WAN) Solutions (1st), WAN Edge (1st), ZTNA (2nd), Unified Threat Management (UTM) (1st)
 

Mindshare comparison

As of October 2025, in the Firewalls category, the mindshare of Cisco IOS Security is 0.3%, up from 0.2% compared to the previous year. The mindshare of Fortinet FortiGate is 20.4%, up from 19.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Firewalls Market Share Distribution
ProductMarket Share (%)
Fortinet FortiGate20.4%
Cisco IOS Security0.3%
Other79.3%
Firewalls
 

Featured Reviews

Danijel Cerovecki - PeerSpot reviewer
Have faced challenges in keeping licensing clear and consistent while ensuring reliable network protection
We are a Gold Partner with Cisco. Our customers come from various industries, including service providers, and we target service providers and enterprise customers.We do not extensively use Zone-Based Firewalls in Cisco IOS Security, instead typically deploying standalone firewalls such as Cisco FTDs or Cisco ASA devices. For threat analytics and vulnerability scanning, we utilize third-party vendors with dedicated devices and software. We use products such as Tenable from Nessus for this type of analysis. We have implemented Secure Access Control Server in Cisco IOS Security, which combines multiple security mechanisms including AAA, 802.1X for network access control with Cisco ICE, TrustSec for identity-based segmentation, and Cisco DNA Center. Cisco IOS Security's VPN support is comprehensive and increasingly important in daily communication, from basic site-to-site tunnels to remote access VPNs and SD-WAN secure VPNs. Protecting and encrypting communication is essential in modern networks. The challenges with Cisco IOS Security are more operational than product-related. There is an understaffing issue, making automation and orchestration capabilities particularly valuable. For the products themselves, we only encounter routine operational matters such as addressing new vulnerabilities and patching. For those considering Cisco IOS Security, it is important to understand that Cisco offers a complete ecosystem. When embracing the Cisco ecosystem fully, customers receive excellent products and comprehensive solutions. On a scale of 1-10, I rate Cisco IOS Security a 9.
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.
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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
Computer Software Company
26%
Government
9%
Manufacturing Company
8%
Outsourcing Company
7%
Computer Software Company
15%
Comms Service Provider
9%
Manufacturing Company
8%
Financial Services Firm
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business19
Midsize Enterprise14
Large Enterprise18
By reviewers
Company SizeCount
Small Business351
Midsize Enterprise130
Large Enterprise187
 

Questions from the Community

What do you like most about Cisco IOS Security?
Cisco IOS Security is a mature product with extensive capabilities, serving as the base for the defense layer. It offers good network visibility, which helps in rapid response through the Rapid Thr...
What is your experience regarding pricing and costs for Cisco IOS Security?
Pricing can be reduced. I rate the current price for the product a four out of ten.
What needs improvement with Cisco IOS Security?
While I do not have specific recommendations for improvement, pricing can be reduced.
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 at large. In my opinion, Fortinet would be the best option and l use Fortinet too...
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 the firewalls change every 5 to 7 years as stated but you really do need to upg...
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 good. The most valuable features for me are their web and email filtering. I wou...
 

Also Known As

IOS Security
No data available
 

Overview

 

Sample Customers

Arup Group, Brunel University London, City of Biel, Gobierno de Castilla-La Mancha, K&L Gates , New South Wales Rural Fire Service, Offshore Northern Seas, Transplace
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
Find out what your peers are saying about Cisco IOS Security vs. Fortinet FortiGate and other solutions. Updated: September 2025.
870,697 professionals have used our research since 2012.