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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
6.1
F5 Silverline boosts security, efficiency, and revenue with global scalability, offering ROI up to 100% and enhanced website performance.
Sentiment score
4.2
Fortinet FortiWeb Cloud WAF-as-a-Service reduces security incidents and costs, offering effective protection and noticeable returns on investment.
Our revenue has grown substantially after the introduction of F5 Silverline Managed Services.
Product Management Consultant at Mafoi Strategic Consultants
F5 Silverline Managed Services is a global solution we have used for one of our customers, providing high scalability and protecting all of our public assets in both low and high demand situations, which is very important for any customer with a global presence.
Dns architect at a outsourcing company with 5,001-10,000 employees
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
6.5
F5 Silverline's support is helpful and responsive but can encounter delays, with satisfaction depending on interaction and urgency.
Sentiment score
7.5
Fortinet FortiWeb Cloud support is praised for fast, knowledgeable service, with minor delays manageable and high overall satisfaction.
Anyone who comes on a call has deep knowledge of how this product works.
Dns architect at a outsourcing company with 5,001-10,000 employees
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
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
7.3
F5 Silverline Managed Services is praised for its scalability, adaptability, and effective traffic management, meeting enterprise demands seamlessly.
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 F5 Silverline Managed Services is high, as it is a SaaS-based platform that can be scaled on demand according to our end customer's needs.
Dns architect at a outsourcing company with 5,001-10,000 employees
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
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
7.6
F5 Silverline Managed Services is stable, reliable, with responsive support, despite occasional issues linked to maintenance activities.
Sentiment score
8.3
Users highly praise Fortinet FortiWeb Cloud WAF-as-a-Service for its stable and reliable performance, rating it highly.
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

F5 Silverline users desire lower costs, improved AI, and simplified processes alongside better automation, compliance, and intuitive interfaces.
Fortinet FortiWeb Cloud WAF-as-a-Service needs improved features, security measures, AI, pricing, integration, and reporting enhancements.
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
Radware provides straightforward blocking WAF and TPS, which are important features that are easier to implement.
Senior Security Consultant at kyndryl
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

F5 Silverline Managed Services pricing is variable and considered costly but justified by its quality and customizable options.
Fortinet FortiWeb Cloud offers cost-effective WAF services with flexible payments, appealing to large enterprises despite not being the cheapest.
In Indian currency, it is approximately 25 to 30 lakh.
Senior Security Consultant at kyndryl
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
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 Silverline provides 24/7 DDoS protection and WAF with real-time threat intelligence, enhancing web application performance and reliability.
Fortinet FortiWeb Cloud WAF-as-a-Service offers AI-driven security, easy integration, and adaptability with robust threat protection and reporting.
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

F5 Silverline Managed Services
Ranking in Web Application Firewall (WAF)
15th
Average Rating
8.2
Reviews Sentiment
6.6
Number of Reviews
21
Ranking in other categories
Distributed Denial-of-Service (DDoS) Protection (5th)
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 October 2026, in the Web Application Firewall (WAF) category, the mindshare of F5 Silverline Managed Services is 1.5%, up from 1.2% compared to the previous year. The mindshare of Fortinet FortiWeb Cloud WAF-as-a-Service is 0.9%, 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 Silverline Managed Services1.5%
Fortinet FortiWeb Cloud WAF-as-a-Service0.9%
Other97.6%
Web Application Firewall (WAF)
 

Featured Reviews

Sanchit Makkar - PeerSpot reviewer
Dns architect at a outsourcing company with 5,001-10,000 employees
Robust protection has secured global web assets and keeps critical applications available
F5 Silverline Managed Services can be improved in areas with complex onboarding processes and slow deployment settings. Tuning of policy requires significant technical expertise, and there is a lack of knowledge in the F5 world where one needs to go through a steep learning curve in understanding what and how the policy should be configured for effectively protecting an application. These processes need to be streamlined.Knowing the limitations of F5 Silverline Managed Services, F5 has come out with a new product called F5 distributed cloud WAF platform, which has a better API integrated with security modules. It also offers advanced auto discovery, swagger, and open API validation, which is much better than Silverline.
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
Comms Service Provider
14%
Financial Services Firm
13%
Outsourcing Company
9%
Construction Company
8%
Financial Services Firm
12%
Outsourcing Company
11%
Comms Service Provider
11%
Construction Company
9%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business9
Midsize Enterprise2
Large Enterprise13
By reviewers
Company SizeCount
Small Business5
Midsize Enterprise2
Large Enterprise5
 

Questions from the Community

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 have to look for other ADC's like F5, Imperva, Radware, Fortinet, etc.
What is your experience regarding pricing and costs for F5 Silverline Managed Services?
My company has a business relationship with F5 Silverline Managed Services, as they charge based on services provided. The operational team handles project configuration. We mostly purchase F5 Silv...
What needs improvement with F5 Silverline Managed Services?
The disadvantages of F5 Silverline Managed Services in comparison to Radware include complexities in WAF technology and iRules, which are highly useful. Radware provides straightforward blocking WA...
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...
 

Also Known As

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

Overview

 

Sample Customers

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: September 2026.
915,341 professionals have used our research since 2012.