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F5 Silverline Managed Services 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
Cloudflare WAF offers quick ROI, crucial protection for e-commerce, saves bandwidth, and balances cost with valuable free features.
Sentiment score
6.4
F5 Silverline enhances efficiency, boosts revenue, saves time, and provides secure services without needing extra cybersecurity staffing.
Sentiment score
4.2
Fortinet FortiWeb Cloud WAF-as-a-Service reduces security incidents and costs, offering effective protection and noticeable returns on investment.
My experience with the pricing or licensing of Cloudflare Web Application Firewall is that many features can be accessed for free, so the pricing is definitely reasonable.
Owner at Hga consulting
Our revenue has grown substantially after the introduction of F5 Silverline Managed Services.
Product Management Consultant at Mafoi Strategic Consultants
I have seen a return on investment in the time saved.
Cloud Support at a security firm with 51-200 employees
 

Customer Service

Sentiment score
6.3
Cloudflare WAF support is mixed; responsive for some, but Indian customers face call availability and administrative issues.
Sentiment score
6.3
F5 Silverline's support is praised for responsiveness but criticized for slow responses and unresolved issues, impacting satisfaction.
Sentiment score
7.5
Fortinet FortiWeb Cloud support is praised for fast, knowledgeable service, with minor delays manageable and high overall satisfaction.
I would rate the technical support with Cloudflare as excellent every time I've had to contact them.
Owner at Hga consulting
The technical support of Cloudflare Web Application Firewall rates between five and seven at maximum.
IT Manager at Amla Commerce
I think 24/7 expert support and streamlined compliance management definitely benefit my company's security efforts.
Associate Vice President at Novac Technology Solutions
Configuration problems largely arise from customer misunderstanding, leading to cases opened for configuration aspects where AI has become increasingly useful.
Network And Security Consultant at TD SYNNEX
They resolve the issues by joining me to fix them.
Design & Delivery Senior Network Security Architect at Qiddiya Investment Company
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
7.7
Cloudflare Web Application Firewall offers impressive scalability and automated management, but additional features may incur costs for smaller organizations.
Sentiment score
7.2
F5 Silverline Managed Services offers scalable solutions for various user bases with easy upgrades, despite some complexity in packet management.
Sentiment score
6.2
Fortinet FortiWeb Cloud WAF-as-a-Service is scalable, efficient in handling traffic, easy to deploy, and highly rated.
The scalability of Cloudflare Web Application Firewall rates between 8 to 9, as it depends upon the use cases and what exactly the client needs.
IT Manager at Amla Commerce
The solution is fully scalable, and I would give it a rating of ten on a scale of one to ten for scalability.
Design & Delivery Senior Network Security Architect at Qiddiya Investment Company
F5 Silverline Managed Services is not a concern due to its scalability.
Associate Vice President at Novac Technology Solutions
F5 Silverline Managed Services has elastic scalability, handling immense traffic spikes effectively.
Lead Engineer at a renewables & environment company with 10,001+ 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
8.2
Cloudflare Web Application Firewall is praised for stability, high performance, effective protection, daily use, and minimal downtime.
Sentiment score
7.6
F5 Silverline is praised for reliable stability, effective incident monitoring, and surpasses competitors with regular updates and support.
Sentiment score
8.3
Users highly praise Fortinet FortiWeb Cloud WAF-as-a-Service for its stable and reliable performance, rating it highly.
The stability of Cloudflare Web Application Firewall deserves a perfect 10 out of 10.
IT Manager at Amla Commerce
I have not seen anything suspicious with its accuracy or output.
Product Management Consultant at Mafoi Strategic Consultants
The stability of the solution is excellent.
Principal Network Architect at a financial services firm with 201-500 employees
 

Room For Improvement

Cloudflare WAF needs feature enhancements, better usability, improved support, advanced DDoS protection, and solutions for latency and alerts.
F5 Silverline Managed Services requires improvements in deployment speed, pricing, global presence, interface, APIs, stability, and compliance features.
Fortinet FortiWeb Cloud WAF-as-a-Service needs improved features, security measures, AI, pricing, integration, and reporting enhancements.
The product can improve by having more multitenancy capability, which is currently not available.
Network Architect at a computer software company with 11-50 employees
I think they're doing a good job with DNS and as support for any domains that I create or that my clients create, it's mandatory for me to ensure they have Cloudflare as their DNS provider.
Owner at Hga consulting
And maybe something similar to Pushpin that Fastly has, which is an option where you can push messages that then can be scaled globally over the network.
CTO at PlayNirvana
F5 Silverline Managed Services needs to adapt compliances related to India's DPDP.
Associate Vice President at Novac Technology Solutions
Localized support could enhance F5 Silverline Managed Services.
Cloud Support at a security firm with 51-200 employees
Improvements could include the creation of highly optimized profiles.
Design & Delivery Senior Network Security Architect at Qiddiya Investment Company
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

Cloudflare Web Application Firewall offers affordable, flexible pricing with no upfront costs, noted for competitiveness and included support services.
Enterprise buyers have mixed views on F5 Silverline pricing due to variable costs and potential discounts but appreciate its performance.
Fortinet FortiWeb Cloud offers cost-effective WAF services with flexible payments, appealing to large enterprises despite not being the cheapest.
The solution is expensive
Design & Delivery Senior Network Security Architect at Qiddiya Investment Company
Regarding the pricing of F5 Silverline Managed Services, I would say it is quite affordable.
Associate Vice President at Novac Technology Solutions
My experience with pricing, setup cost, and licensing was good, as it was easy to use and choose.
Lead Engineer at a renewables & environment company with 10,001+ employees
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

Cloudflare Web Application Firewall provides comprehensive security features, easy setup, scalability, and competitive pricing with praised performance and stability.
F5 Silverline provides continuous DDoS protection, WAF, and fraud defense, enhancing security and performance with real-time threat intelligence.
Fortinet FortiWeb Cloud WAF-as-a-Service offers AI-driven security, easy integration, and adaptability with robust threat protection and reporting.
The custom rules and the geo-redundant geographical rule feature, which allows me to implement geographical rules for customers, add significant value.
Network Architect at a computer software company with 11-50 employees
The best features of Cloudflare Web Application Firewall are multiple, including the WAF, rate limiter, and bot attack protection.
IT Manager at Amla Commerce
Cloudflare Web Application Firewall's advanced reporting and analytics tools add a layer that we're able to visualize and see before it actually hits the local firewall.
Owner at Hga consulting
It allows for centralized management of certificates, protecting applications from top ten attacks like SQL injection and cross-site scripting.
Design & Delivery Senior Network Security Architect at Qiddiya Investment Company
One part is positive security, which allows you to know vulnerabilities in depth, and you can implement CAPTCHA and MFA for logins, while also preventing known threats with included signatures.
Network And Security Consultant at TD SYNNEX
F5 Silverline Managed Services has positively impacted my organization by drastically helping us during a major DDoS attempt or web scraping that was detected, where F5 handled the triage and mitigation entirely.
Lead Engineer at a renewables & environment company with 10,001+ employees
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

Cloudflare Web Application ...
Sponsored
Ranking in Web Application Firewall (WAF)
7th
Average Rating
8.6
Reviews Sentiment
7.4
Number of Reviews
26
Ranking in other categories
No ranking in other categories
F5 Silverline Managed Services
Ranking in Web Application Firewall (WAF)
18th
Average Rating
8.0
Reviews Sentiment
6.6
Number of Reviews
19
Ranking in other categories
Distributed Denial-of-Service (DDoS) Protection (6th)
Fortinet FortiWeb Cloud WAF...
Ranking in Web Application Firewall (WAF)
23rd
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 July 2026, in the Web Application Firewall (WAF) category, the mindshare of Cloudflare Web Application Firewall is 4.0%, down from 5.8% compared to the previous year. The mindshare of F5 Silverline Managed Services is 1.5%, up from 1.1% compared to the previous year. The mindshare of Fortinet FortiWeb Cloud WAF-as-a-Service is 0.8%, up from 0.5% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Web Application Firewall (WAF) Mindshare Distribution
ProductMindshare (%)
Cloudflare Web Application Firewall4.0%
F5 Silverline Managed Services1.5%
Fortinet FortiWeb Cloud WAF-as-a-Service0.8%
Other93.7%
Web Application Firewall (WAF)
 

Featured Reviews

DB
CTO at PlayNirvana
Advanced security reporting has protected high-traffic betting platforms from constant attacks
I don't see room for improvement to Cloudflare Web Application Firewall. One thing I don't know much about because we have a dedicated IT team for that, and I'm not involved with Cloudflare much anymore. But if I were to compare them to F5, I would like to see more features that F5 offers. F5 has an option to bring the whole infrastructure, the whole WAF and all their packages, Bot Management, and everything else on your infrastructure. You need to install certain services from their side, and then you can choose if you would like requests to hit your servers immediately or if requests need to be proxied through F5 backbone. That would be a nice addition because we have 90% of the traffic as legit traffic coming from whitelisted servers. If it comes from whitelisted servers, I don't need to go every request through the backbone; I could easily just IP whitelist everything. Then I could maybe have Bot Management on my infrastructure that drastically reduces the price of Cloudflare. I would like to see Push CDN more improved in the next release of Cloudflare Web Application Firewall. And maybe something similar to Pushpin that Fastly has, which is an option where you can push messages that then can be scaled globally over the network. From our perspective, if we have a listener that listens for stock updates, I would just need to have one processor that pushes those updates to the Cloudflare API, and then Cloudflare would broadcast that message to all listeners. Cloudflare will check the order of the message, and if you, as a customer, are not connected or have some kind of network issue, when you reconnect, you will receive the latest state and missing updates.
Mohan Janarthanan - PeerSpot reviewer
Associate Vice President at Novac Technology Solutions
Cloud applications have gained stronger protection and real-time defense against web attacks
What really stands out for me in terms of advantages of F5 Silverline Managed Services is that in a single cloud platform, I can protect my web applications against attacks. I can also use my load balancer in F5 because they are providing and acting as a load balancer too, and they will support the volumetric and DDoS attacks and malicious attacks. Regarding the real-time threat intelligence feature, I do use this aspect in F5 Silverline Managed Services. It blocks malicious IPs or bad IPs for my server, protecting against my applications. For example, if someone is a bad actor trying to access via a malicious IP, I can block it because the threat intelligence has the capability to block the malicious IP. The adaptable and flexible security impacts threat response time positively. It is effective because it blocks my malicious traffic. Whenever I face issues related to that application, it automatically routes my traffic to act as a proxy and routes my traffic to their scrubbing center, especially in case of any volumetric attack.
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
Construction Company
17%
Financial Services Firm
9%
Comms Service Provider
9%
Manufacturing Company
7%
Financial Services Firm
16%
Comms Service Provider
14%
Insurance Company
9%
Construction Company
6%
Financial Services Firm
13%
Construction Company
10%
Comms Service Provider
10%
Manufacturing Company
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business16
Midsize Enterprise6
Large Enterprise6
By reviewers
Company SizeCount
Small Business9
Midsize Enterprise2
Large Enterprise11
By reviewers
Company SizeCount
Small Business5
Midsize Enterprise2
Large Enterprise5
 

Questions from the Community

What needs improvement with Cloudflare Web Application Firewall?
I don't see room for improvement to Cloudflare Web Application Firewall. One thing I don't know much about because we...
What is your primary use case for Cloudflare Web Application Firewall?
We are using Cloudflare Web Application Firewall's advanced reporting and analytics tools with their Zero Trust, so e...
Is Citrix ADC (formerly Netscaler) the best ADC to use and if not why?
For ADC, any ADC can do a good job. But in case if you want to add WAF functionality to the same ADC hardware you hav...
What is your experience regarding pricing and costs for F5 Silverline Managed Services?
Regarding the pricing of F5 Silverline Managed Services, I would say it is quite affordable.
What needs improvement with F5 Silverline Managed Services?
One thing that was a hassle for us regarding F5 Silverline Managed Services was the deployment of this particular sof...
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 ...
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 ...
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 user...
 

Also Known As

Cloudflare WAF
F5 Silverline Web Application Firewall, F5 Silverline DDoS Protection
No data available
 

Overview

 

Sample Customers

crunchbase, udacity, marketo, okcupid, zendesk
City Bank, Ricacorp Properties, Miele, American Systems, Bangladesh Post Office
Information Not Available
Find out what your peers are saying about F5 Silverline Managed Services vs. Fortinet FortiWeb Cloud WAF-as-a-Service and other solutions. Updated: June 2026.
902,894 professionals have used our research since 2012.