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F5 Advanced WAF vs Fortinet FortiWeb Cloud WAF-as-a-Service comparison

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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
7.6
F5 Advanced WAF offers ROI by saving time, reducing costs, enhancing security, and ensuring compliance for businesses.
Sentiment score
4.2
Fortinet FortiWeb Cloud WAF-as-a-Service reduces security incidents and costs, offering effective protection and noticeable returns on investment.
Time savings in daily operations come from the automatic learning and signature update reducing the need for constant manual rule management, allowing the security and network teams to spend significantly less time handling false positive application-related escalations.
Cyber Security Consultant at HR Software Solution
Subscription models offer clearer ROI due to a more competitive pricing scheme.
Global Channel Alliances Lead at a tech vendor with 10,001+ employees
The amount of attacks it protects against is immense, more than F5 Advanced WAF itself costs.
Security Solutions Architect at a consultancy with 1-10 employees
 

Customer Service

Sentiment score
6.9
F5 Advanced WAF's customer service is highly professional and knowledgeable, but response speed and availability need improvement for some users.
Sentiment score
7.5
Fortinet FortiWeb Cloud support is praised for fast, knowledgeable service, with minor delays manageable and high overall satisfaction.
Both response time and availability need to be improved.
Security Analyst at IBM
While they resolve issues well, the time taken for responses to non-critical issues should be shorter.
Senior Security Systems Engineer at a tech services company with 11-50 employees
If there is a bug, the support is usually understanding and resolves issues.
CEO at CyberApp
The company provides technical support, and they are mostly available 24/7.
Pre sale engineer at Harnssen Group Limited
The proximity of Fortinet with customers ensures quick issue resolution.
Security Specialist at a tech services company with 1,001-5,000 employees
Sometimes it could be faster, but generally, their support is reliable.
Principal Network Architect at a financial services firm with 201-500 employees
 

Scalability Issues

Sentiment score
7.5
F5 Advanced WAF is scalable, efficiently handling large traffic, praised for flexibility, and easily upgraded to meet user needs.
Sentiment score
6.2
Fortinet FortiWeb Cloud WAF-as-a-Service is scalable, efficient in handling traffic, easy to deploy, and highly rated.
If you need to scale up, such as moving from a lower model to a higher one, the configuration from the lower model can be migrated easily without issues.
Senior Security Systems Engineer at a tech services company with 11-50 employees
I can run it in HA mode or even divide the traffic volume to the number of instances that I have based on their resource sizing.
Security Solutions Architect at a consultancy with 1-10 employees
It auto checks everything, and you need to install the certificate.
Pre Sales Architect at network techlab
In my experience, Fortinet FortiWeb Cloud WAF-as-a-Service's scalability is quite good, and I would rate it at eight point five out of ten.
Network and Security Engineer (Contractor) at Clymora Technology Limited
We are purchasing Fortinet FortiWeb Cloud WAF-as-a-Service from the distributor side, who have provided support and a price discount.
Owner at IT CARE
 

Stability Issues

Sentiment score
8.4
F5 Advanced WAF is highly reliable and stable, rarely facing downtime, with user ratings of 8-10 for performance.
Sentiment score
8.3
Users highly praise Fortinet FortiWeb Cloud WAF-as-a-Service for its stable and reliable performance, rating it highly.
F5 Advanced WAF has been very reliable and consistent for us; in our on-premise enterprise setup, it has been stable and predictable in day-to-day operations without any unexpected crashes or WAF-related downtime in production.
Cyber Security Consultant at HR Software Solution
F5 Advanced WAF is stable, and there is no doubt it is one of the best WAFs in the market.
Senior Security Systems Engineer at a tech services company with 11-50 employees
F5 Advanced WAF is pretty stable.
Security Solutions Architect at a consultancy with 1-10 employees
The stability of the solution is excellent.
Principal Network Architect at a financial services firm with 201-500 employees
 

Room For Improvement

F5 Advanced WAF needs improvements in pricing, usability, API protection, bot detection, deployment, and advanced integration features.
Fortinet FortiWeb Cloud WAF-as-a-Service needs improved features, security measures, AI, pricing, integration, and reporting enhancements.
Deployment training for F5 Advanced WAF is lacking and restricts growth by being inaccessible and costly for partners.
Global Channel Alliances Lead at a tech vendor with 10,001+ employees
Overall, these are not blockers, merely enhancement opportunities, and once tuned, F5 Advanced WAF is very stable and reliable; improving usability, reporting, and onboarding would make it even more effective for larger environments.
Cyber Security Consultant at HR Software Solution
Another improvement could be refining the bot detection to minimize false positives; it should be able to verify more granularly between legitimate and non-legitimate clients.
Senior Security Systems Engineer at a tech services company with 11-50 employees
Fortinet FortiWeb Cloud WAF-as-a-Service could be improved with better logging capabilities, as many come with less spacing, necessitating a FortiSIM for enhanced functionality.
Network and Security Engineer (Contractor) at Clymora Technology Limited
The utilization of AI in Fortinet FortiWeb Cloud WAF-as-a-Service still needs to be upgraded and improved.
Assistant Technical Director at a comms service provider with 11-50 employees
I want them to provide SAML authentication.
Pre Sales Architect at network techlab
 

Setup Cost

Enterprise buyers find F5 Advanced WAF's pricing high but justified in banking, with complex licensing and higher setup costs.
Fortinet FortiWeb Cloud offers cost-effective WAF services with flexible payments, appealing to large enterprises despite not being the cheapest.
Licensing is capacity-driven, so you need careful planning based on traffic volume and use cases, and adding features such as Bot Protection impacts costs; once licensing is clear and sized correctly, there are no surprises.
Cyber Security Consultant at HR Software Solution
Subscription models have competitive pricing, while perpetual licenses involve an upfront higher cost.
Global Channel Alliances Lead at a tech vendor with 10,001+ employees
The price is affordable and satisfactory.
CEO at CyberApp
It is twice cheaper.
Pre sale engineer at Harnssen Group Limited
I just recommend Fortinet FortiWeb Cloud WAF-as-a-Service because it is very expensive.
Pre Sales Architect at network techlab
The price is not the cheapest, but it offers great value for money.
Principal Network Architect at a financial services firm with 201-500 employees
 

Valuable Features

F5 Advanced WAF offers robust application security with bot protection, DDoS mitigation, and customizable threat detection for improved efficiency.
Fortinet FortiWeb Cloud WAF-as-a-Service offers AI-driven security, easy integration, and adaptability with robust threat protection and reporting.
The Advanced Attack Signature database is very strong and regularly updated, effectively blocking SQL injections, cross-site scripting, command injections, and file inclusion attacks while allowing selective enabling or disabling of signatures to avoid blocking genuine traffic.
Cyber Security Consultant at HR Software Solution
The perpetual license, despite an initial higher cost, lacks transparency regarding support expiration.
Global Channel Alliances Lead at a tech vendor with 10,001+ employees
It contains the logic of both negative and positive security combined.
CEO at CyberApp
It is possible to easily find vulnerabilities with the WAF.
IT Specialist at a manufacturing company with 10,001+ employees
It effectively mitigates web attacks, provides virtual protections, and handles large traffic with minimal processing effort.
Security Specialist at a tech services company with 1,001-5,000 employees
Its usability is a key aspect as it is very easy to use and deploy in front of new APIs.
Principal Network Architect at a financial services firm with 201-500 employees
 

Categories and Ranking

F5 Advanced WAF
Ranking in Web Application Firewall (WAF)
3rd
Average Rating
8.4
Reviews Sentiment
6.8
Number of Reviews
72
Ranking in other categories
No ranking in other categories
Fortinet FortiWeb Cloud WAF...
Ranking in Web Application Firewall (WAF)
22nd
Average Rating
8.8
Reviews Sentiment
6.4
Number of Reviews
10
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of September 2026, in the Web Application Firewall (WAF) category, the mindshare of F5 Advanced WAF is 3.6%, down from 8.0% compared to the previous year. The mindshare of Fortinet FortiWeb Cloud WAF-as-a-Service is 0.8%, up from 0.6% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Web Application Firewall (WAF) Mindshare Distribution
ProductMindshare (%)
F5 Advanced WAF3.6%
Fortinet FortiWeb Cloud WAF-as-a-Service0.8%
Other95.6%
Web Application Firewall (WAF)
 

Featured Reviews

reviewer2797602 - PeerSpot reviewer
Senior Security Systems Engineer at a tech services company with 11-50 employees
Granular security policies have protected critical applications and ensure safe user and admin access
Improvements could be made regarding the log information from the backend CLI. There are enhancements needed; if a request gets blocked on the TCP layer, there should be traces or data to verify which source generated these requests, including the source and port information for initiation. These data are missing from F5 Advanced WAF. Besides that, another improvement could be refining the bot detection to minimize false positives; it should be able to verify more granularly between legitimate and non-legitimate clients. Overall, I find everything else good. A wish list feature I have is for the Technical Assistance Center (TAC) to respond more promptly. Their response time needs improvement; while they do not take excessive time, it can be enhanced, especially given it is a security product.
NiteshSharma - PeerSpot reviewer
Pre Sales Architect at network techlab
Comprehensive web protection has secured public apps and supports advanced audit requirements
Fortinet FortiWeb Cloud WAF-as-a-Service has multiple valuable aspects. The WAF solution secures whatever public domains have been published by the public platform or internal servers exposed to public users. Firewalls have limitations, which is why I suggest using a WAF solution. The firewall provides the same features but in a limited edition. When discussing the SaaS platform or Layer 7 layer of security, you will receive multiple benefits. Firewalls have limitations with signatures, bot protection, and DOS protection. Fortinet FortiWeb Cloud WAF-as-a-Service is a dedicated WAF product that handles all DOS protection, bot protection, API security, endpoint connectivity, signature-based support, and top 10 OWASP support. Multiple features are available. AI and ML-based technology is available in almost every tool today. When discussing troubleshooting, there are AI models that will solve your problem and provide information. AI is helpful because it will give you proper information regarding errors and troubleshooting.
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Top Industries

By visitors reading reviews
Financial Services Firm
14%
Comms Service Provider
10%
Computer Software Company
8%
Outsourcing Company
8%
Financial Services Firm
12%
Comms Service Provider
11%
Outsourcing Company
11%
Construction Company
10%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business27
Midsize Enterprise16
Large Enterprise31
By reviewers
Company SizeCount
Small Business5
Midsize Enterprise2
Large Enterprise5
 

Questions from the Community

What is your experience regarding pricing and costs for F5 Advanced WAF?
F5 Advanced WAF is somewhat costly compared to other vendors, but it is worth the investment due to the stability it provides to the environment and infrastructure.
What needs improvement with F5 Advanced WAF?
Improvements could be made regarding the log information from the backend CLI. There are enhancements needed; if a request gets blocked on the TCP layer, there should be traces or data to verify wh...
What is your primary use case for F5 Advanced WAF?
My main use case for F5 Advanced WAF is to protect external and internal applications from cyber attacks and to prevent malicious payloads and malicious data from reaching servers. Even if maliciou...
What is your experience regarding pricing and costs for Fortinet FortiWeb Cloud WAF-as-a-Service?
It is expensive. Actually, it is expensive. When discussing small organizations, I would not recommend it to them. I always choose the enterprise because it is expensive. I just recommend Fortinet ...
What needs improvement with Fortinet FortiWeb Cloud WAF-as-a-Service?
Currently, I want to add that Fortinet FortiWeb Cloud WAF-as-a-Service is offering only two-factor authentication. I want them to provide SAML authentication. If it gets SAML authentication or some...
What is your primary use case for Fortinet FortiWeb Cloud WAF-as-a-Service?
When discussing Fortinet FortiWeb Cloud WAF-as-a-Service, I always recommend it. Either I can recommend F5. Most users require security via SSL, so I recommend Fortinet FortiWeb Cloud WAF-as-a-Serv...
 

Overview

 

Sample Customers

MAXIMUS, Vivo, American Systems, Bangladesh Post Office, City Bank
Information Not Available
Find out what your peers are saying about F5 Advanced WAF vs. Fortinet FortiWeb Cloud WAF-as-a-Service and other solutions. Updated: September 2026.
914,109 professionals have used our research since 2012.