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F5 Silverline Managed Services vs FortiWeb Web Application Firewall (WAF) comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Jan 1, 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
6.5
Cloudflare enhanced speed, security, and data protection, providing significant ROI and improved operations and client satisfaction for businesses.
Sentiment score
6.6
F5 Silverline Managed Services offers effective cybersecurity solutions, with variable ROI perceptions and appreciation for time and cost savings.
Sentiment score
7.3
FortiWeb enhances security, cuts costs, saves resources, offering a 70% ROI and improving financial and operational efficiency.
WordPress security can be tricky, and that's where Cloudflare can be absolutely helpful for small businesses.
For the small project I was working on, using the basic tier provided a huge improvement at zero cost.
 

Customer Service

Sentiment score
7.0
Cloudflare's customer service is efficient for paying users, but responses can vary in speed and effectiveness for others.
Sentiment score
6.1
F5 Silverline's customer support is responsive but varies; users praise personalization but note challenges with escalations and response times.
Sentiment score
6.7
FortiWeb's customer service is inconsistent, with varied experiences in responsiveness, regional support, and subscription cost concerns.
This would help us address issues promptly, especially during unforeseen events like DDoS attacks.
Cloudflare does not offer hands-on technical support to fix customer problems but rather a self-service model.
The key factor is the language in which the support is offered, which, in this case, is in Thai.
Their support team is responsive, and they deliver timely updates, addressing any glitches promptly.
They resolve the issues by joining me to fix them.
Their support is truly exceptional when I compare it with similar large-sized companies.
The back-end development team is available, and if any issue arises, they will help us immediately by providing solutions when contacted.
 

Scalability Issues

Sentiment score
8.1
Cloudflare is praised for seamless scalability, managing enterprise-level traffic efficiently and earning high customer satisfaction during peak events.
Sentiment score
7.8
F5 Silverline offers scalable managed services, efficiently handling enterprise demands with flexible expansion and seamless capacity management.
Sentiment score
7.2
FortiWeb WAF is scalable, supporting diverse users, with high ratings but some licensing flexibility challenges noted.
It is a SaaS tool, but the fact that they have workloads deployed across the world proves that it is a highly scalable tool.
The tool offers very good performance, even during high-traffic periods.
I rate the solution’s scalability an eight out of ten.
F5 Silverline Managed Services is scalable enough without observed limitations.
The solution is fully scalable, and I would give it a rating of ten on a scale of one to ten for scalability.
 

Stability Issues

Sentiment score
7.6
Cloudflare is widely regarded as stable and reliable, with improvements noted in uptime and performance on higher plans.
Sentiment score
7.3
F5 Silverline delivers stable performance with strong monitoring, minimal downtime, effective support, and high stability ratings despite occasional issues.
Sentiment score
8.1
FortiWeb is seen as stable, routinely scoring high, but users suggest using FortiAnalyzer for enhanced security management.
For DDoS protection, I would not recommend Cloudflare.
I rate the solution’s stability an eight out of ten.
The service is very stable with no impacts during high-traffic periods.
They offer regular updates, and overall, I would rate the stability of the solution as nine out of ten.
 

Room For Improvement

Cloudflare requires improvements in analytics, CDN speed, API, technical support, DNS management, documentation, pricing clarity, and international and reseller support.
F5 Silverline needs improved pricing, integration, user interfaces, automation, API, and enhanced features like AI and bot detection.
FortiWeb WAF requires improvements in integrations, performance, support, scalability, and more enterprise features to compete with competitors.
There's a need for improvement in areas like AI-based DDoS attacks and Layer 7 WAF features.
Despite these challenges, overall, Cloudflare remains the preferred solution compared to Azure, AWS CloudFront, and Google Cloud Armor.
Cloudflare should add more documentation and pricing to the cloud version.
Introducing preemptive support prompts would reduce the manual effort required for creating policies or blocking specific IPs.
Improvements could include the creation of highly optimized profiles.
If the GUI includes notifications and improved logging capabilities that allow us to see traffic and store logs for six months, that would be very helpful.
If some of my customers want to migrate from F5 to Fortinet Firewall, or the Fortinet WAF solution, there are some migration issues.
 

Setup Cost

Cloudflare offers cost-effective, scalable plans with no setup fees, starting from free for small businesses to enterprise-level solutions.
Enterprise users view F5 Silverline pricing as competitive but costly, with room for negotiation and flexible licensing options.
FortiWeb Web Application Firewall offers flexible pricing, core and advanced features, and scalable licensing for cost-efficient protection.
That's where Cloudflare shines for smaller businesses – it's ten times cheaper than Akamai.
I find it to be cheap.
I think they should consider reevaluating the pricing for support, as it can be quite high.
On a scale where ten is very expensive, I would rate the pricing as three.
The solution is expensive
If the customer has multiple websites, the price reduces automatically because it depends on the number only.
 

Valuable Features

Cloudflare enhances security, speed, and SEO with easy-to-use features like CDN, SSL, DDoS protection, and centralized management.
F5 Silverline Managed Services provides easy setup, robust security features, excellent scalability, and effective DDoS protection with comprehensive reporting.
FortiWeb Web Application Firewall provides user-friendly setup, protection against attacks, scalability, and cost-effective security features like machine learning.
The most valuable features of the solution are performance and security.
Techniques like minification and image compression reduce the size of assets, leading to better performance and faster user load times.
The solution has been able to compare it to the market, and I think the product has taken great strides in automating quite a bit of things, and they use a lot of AI.
It allows for centralized management of certificates, protecting applications from top ten attacks like SQL injection and cross-site scripting.
The monitoring tab displays GET and POST requests in a readable format, making it accessible even to non-tech-savvy individuals.
Fortinet's pricing is way more competitive than Cisco or Palo Alto.
The features of FortiWeb Web Application Firewall (WAF) that have proven most effective in protecting web applications include web filtering, DDoS protection, geo-location blocking, and blocking SQL injection attacks.
 

Categories and Ranking

Cloudflare
Sponsored
Average Rating
8.6
Reviews Sentiment
7.1
Number of Reviews
76
Ranking in other categories
CDN (1st), Distributed Denial-of-Service (DDoS) Protection (1st), Managed DNS (1st), Cloud Security Posture Management (CSPM) (13th)
F5 Silverline Managed Services
Average Rating
7.8
Reviews Sentiment
6.8
Number of Reviews
16
Ranking in other categories
Web Application Firewall (WAF) (23rd), Distributed Denial-of-Service (DDoS) Protection (14th)
FortiWeb Web Application Fi...
Average Rating
8.2
Reviews Sentiment
7.3
Number of Reviews
24
Ranking in other categories
Web Application Firewall (WAF) (15th)
 

Featured Reviews

Carlos Alam Hernandez Baruch - PeerSpot reviewer
Fast and secure deployments simplify operations for government and fintech clients
It is a fast and secure DNS. It is very easy to deploy, and my customers are happy with this tool. Additionally, the CDN performance in Mexico is excellent, providing fast service and tools. It offers reliability during high-traffic periods, ensuring no impact on the environment. It helps my clients avoid using on-premise boxes, simplifying operations as they only use the prices on Cloudflare.
DejanBlagojevic - PeerSpot reviewer
Mitigates more bot activity when defending web applications than any other vendor but comes at a price
F5 Silverline Managed Services is expensive. You do get world-class quality of mitigation, but I think it is still pricey. You can find similar services, potentially of slightly lower quality, from other vendors like Cloudflare or Akamai for about half the price. When you compare what you get for the money you spend at Cloudflare or Akamai, you do get less protection but you are not dishing out too much for it. On the other hand, at F5 Silverline Managed Services, you do get better protection but, but you are paying double for it. We have had mixed feedback from our clients about this. Most of them would rather pay less for a bit of a lower-quality defense than overshoot their budget. The most common piece of feedback we receive is that the difference in protection levels is not reflected in the price.
Martin Ellmann - PeerSpot reviewer
Provides users with ease of policy configuration and good integration capabilities
The solution helps protect our company's web applications against common threats up to 99 percent. We feel very safe with the tool. Speaking about how the tool has effectively mitigated web security threats for an application, I would say that it is an application behind the web portal, so there are about a hundred or thousand people who can access a website. If it is a sensitive application, and we have to watch every access to it to make it really safe, that is the reason why we need WAF on the application. My company doesn't use AI with the tool. I recommend the product to others. I would say that others need to have it if they have a shopping website or something similar. I know it is hard to sell because we find it quite hard whenever my company tries to do so. The solution offers 100 percent integration with other Fortinet security products. The ease of policy configuration in the tool is okay. I rate the tool a nine to ten out of ten.
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Top Industries

By visitors reading reviews
Computer Software Company
15%
Comms Service Provider
11%
Financial Services Firm
9%
Manufacturing Company
7%
Financial Services Firm
18%
Insurance Company
14%
Comms Service Provider
13%
Computer Software Company
11%
Computer Software Company
11%
Government
11%
Financial Services Firm
9%
Manufacturing Company
9%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
 

Questions from the Community

Which is the best DDoS protection solution for a big ISP for monitoring and mitigating?
Cloudflare. We are moving from Akamai prolexic to Cloudflare. Cloudflare anycast network outperforms Akamai static GR...
Which would you choose - Cloudflare DNS or Quad9?
Cloudflare DNS is a very fast, very reliable public DNS resolver. It is an enterprise-grade authoritative DNS service...
What do you like most about Cloudflare?
Cloudflare offers CDN and DDoS protection. We have the front end, API, and database in how you structure applications.
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?
The solution is quite reasonably priced, with costs being lower in comparison to competitors. On a scale where ten is...
What do you like most about FortiWeb Web Application Firewall (WAF)?
The most valuable features of the solution are SD-WAN, filtration, web filter, application filter, and IPS.
What is your experience regarding pricing and costs for FortiWeb Web Application Firewall (WAF)?
The pricing for FortiWeb Web Application Firewall (WAF) is reasonable. That said, it depends on how many websites we ...
What needs improvement with FortiWeb Web Application Firewall (WAF)?
Their AI technology is good. Overall, Fortinet is only good. The improvement needed is in their response time. In the...
 

Also Known As

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

Overview

 

Sample Customers

Trusted by over 9,000,000 Internet Applications and APIs, including Nasdaq, Zendesk, Crunchbase, Steve Madden, OkCupid, Cisco, Quizlet, Discord and more.
City Bank, Ricacorp Properties, Miele, American Systems, Bangladesh Post Office
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Find out what your peers are saying about F5 Silverline Managed Services vs. FortiWeb Web Application Firewall (WAF) and other solutions. Updated: July 2025.
865,484 professionals have used our research since 2012.