Cloudflare Web Application Firewall vs F5 Silverline Managed Services comparison

Cloudflare and F5 are both solutions in the Web Application Firewall (WAF) category. Cloudflare is ranked #7 with an average rating of 8.4, while F5 is ranked #25 with an average rating of 8.0. Additionally, 95% of Cloudflare users are willing to recommend the solution, compared to 100% of F5 users who would recommend it.

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Executive SummaryUpdated on Jan 1, 2025

F5 Silverline Managed Services and Cloudflare Web Application Firewall compete in the web security category. Cloudflare has an advantage with superior features that justify its cost, while F5 Silverline offers benefits in pricing and support.

Features: F5 Silverline Managed Services offers 24/7 organic mitigation, cloud-native functionality, and high-level protection. Cloudflare Web Application Firewall provides robust firewall capabilities, extensive threat intelligence, and seamless integration with existing infrastructure, enhancing its competitive edge.

Room for Improvement: F5 Silverline could enhance user interfaces and streamline deployment processes. Cost efficiency and flexibility in service plans are areas to improve. Cloudflare may benefit from better handling of false positives, increased customization options, and more thorough customer service interaction.

Ease of Deployment and Customer Service: F5 Silverline has a more involved deployment process with the benefit of strong customer support and continuous oversight. Cloudflare allows for quicker deployment through automated setups and offers extensive self-service resources, focusing on scalability and self-management.

Pricing and ROI: F5 Silverline often has higher initial setup costs but can deliver better ROI for businesses that require hands-on management. Cloudflare offers cost-effective pricing with flexible plans, providing significant ROI for companies focused on scalable, self-managed solutions. Its pricing model is accessible for rapid deployment and quick return on investment.

To learn more, read our detailed Cloudflare Web Application Firewall vs. F5 Silverline Managed Services Report (Updated: March 2025).

Buyer's Guide

Cloudflare Web Application Firewall vs. F5 Silverline Managed Services

March 2025

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Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:

Categories and Ranking

Cloudflare

Featured Reviews

Spencer Malmad

Owner at Tech Exchange

It's easy to set up because you point the DNS to it, and it's working in under 15 minutes

Cloudflare is highly scalable. Cloudflare is a system with a web portal that the end users like me see. It's a console where we can adjust the DNS, caching, and security features all in that console. Cloudflare owns thousands of servers across the world that cache the data. It's a powerful solution. When clients sign up for Cloudflare, they're getting this monster content delivery network, security, and a web application firewall in one. It's all rolled into one, and it's massive. Unless you have your website hosted on a massive hosting provider, there's no way that you can deliver the amount of data that Cloudflare can provide to the end users. If you have static content, there's no way that you can ever match what Cloudflare can do. Obviously, there are competitors to Cloudflare that do the same, but I'm saying other types of solutions. Let's say you go with F5. Great, that's on-prem. That's in your colo. You can't deliver as much data to the internet as you can with a CDN. You don't have to spend $20,000 on a net scaler, F5, or whatever Cisco's selling now. You don't have to buy that. You pay them $50 a month or $150 a month. It's totally worth it because even in five years, you'll never get the performance value, not just the actual ROI. You have to consider how much throughput you can get with Cloudflare.

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SachidDoshi

Senior Enterprise Security Architect at HGS - Hinduja Global Solutions

Offers a huge signature repository and is superiorly effective in mitigating DDoS attacks

The solution's learning curve can still be further reduced, which presently stands at two or three months. The product has a custom rule set that users can modify and manifest as needed. The vendor can probably shorten the learning curve using cutting-edge technologies like AI. The solution provider can also work around the web applications and identify the toolset that needs to be implemented to deploy the solution in less time. The vendor has launched a SASE product that can function with Cloudflare Web Application Firewall, but many improvements are needed in terms of features, such as the web filtering feature, and CASB has not yet been added.

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DejanBlagojevic

Presales Engineer at Exclusive-networks

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.

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Quotes from Members

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:

Pros

"The features of Cloudflare were found to be more beneficial and led to the decision to utilize it over other options."

"The most valuable feature of Cloudflare is that it has a free version. They give us the free version with the anti-DDoS features and also the load balancing solution."

"Its most significant benefit to date is the speed with which it refreshes DNS records on the internet once you change it. If you are changing a website or registering a new record, it is very quick."

"What I like best about Cloudflare is that my company can use it to trace and manage applications and monitor traffic. The solution tells you if there's a spike in traffic. Cloudflare also sends you a link to check your equipment and deployment and track it through peering, so it's a valuable tool."

"Generally, I am satisfied with this product."

"From what I've seen so far, there are no negatives to report as of yet"

"The most valuable feature of Cloudflare is the GUI. You are able to control the solution very well through the interface. There is a lot of functionality that is embedded in the service."

"It is a fast and secure DNS."

More Cloudflare pros

"I'm highly satisfied. It's remarkably user-friendly, enabling me to quickly identify issues, and deploy solutions, and it offers the necessary features."

"Technical support has a very fast response time and they are helpful."

"The setup process is very simple for me."

"The solution protects our application, which runs on the HTTP protocol, from DDoS attacks."

"There is a huge signature repository"

"The initial setup process is simple."

"It is a SaaS solution unlike much of the competition."

"Does a good job preventing web application attacks."

More Cloudflare Web Application Firewall pros

"The most valuable feature is flexibility."

"The most important feature is that they have seven firewall protection, to protect our web servers."

"The most valuable feature of F5 Silverline Managed Services is the benchmark performance."

"The product’s UI is easy to understand."

"We have a lot of businesses that we put behind this solution, and it has really helped us in terms of monitoring the logs and incidents."

"The most valuable feature of F5 Silverline Managed Services is it becomes similar to a distributed architecture."

"The initial setup is straightforward."

"The initial setup is very straightforward."

More F5 Silverline Managed Services pros

Cons

"There should be a specific price list for enterprise-level customers."

"Latencies are always a problem."

"It would be good if Cloudflare could have more servers for better traffic routing or an increase in the traffic routed. This is what I'd like to improve in Cloudflare."

"In the last two years, there has been a certain amount of downtime when using the VDM."

"The analytics, basically the dashboard, doesn't have much to it."

"The pricing could be improved."

"The integration of LLMs on the dashboard is something that is needed in the tool."

"We're facing challenges due to an upgrade in the machine learning model. The problem arises from some users abusing the APIs, resulting in an influx of suspicious traffic. Cloudflare's learning model mistakenly identifies this traffic as human. Consequently, it assigns it a higher trust score, akin to legitimate human traffic, causing complications in our architecture. Previously, such traffic would have been categorized as suspicious, enabling us to apply appropriate blocking rules. However, we encounter difficulties distinguishing between genuine and suspicious traffic with the new categorization. Despite these challenges, overall, Cloudflare remains the preferred solution compared to Azure, AWS CloudFront, and Google Cloud Armor."

More Cloudflare cons

"Support can be challenging at times."

"If they add logs history within the Cloudflare offering, that would be a great benefit."

"The notification part could be improved. It's very much connected to Web Application Firewall, rate-limiting, and DDoS protection."

"Their documentation could be better. They don't have documentation that explains everything well. They have documentation for everything you're looking for, but they lack a single piece of documentation to tie everything together. As a new user or beginner, it took us a little bit of time to figure out how to put all these things in place."

"We have noticed some latency when the call goes through the firewall. That could be improved."

"The ModSecurity core rules need to be updated."

"The platform's control features related to real-time authentication and response time need improvement."

"Cloudflare Web Application Firewall should include port forwarding features."

More Cloudflare Web Application Firewall cons

"In terms of the scalability, this part is always so confusing because they are checking for packet count. Also, after an attack, they said that the throughput must be from gigabits but then I check my bandwidth and it is already done in gigabits. So it is a little bit confusing."

"F5 Silverline Web Application Firewall, being a new product in the market or comparatively related to a new product, currently supports less number of PoPs. They should introduce more PoPs. The current number of PoPs that they have is around 10 or 12, which is still relatively less as compared to 2,400 plus PoPs that Akamai offers. The user latency or the number of hops a user needs before reaching the actual web application is less in Akamai because it has its internal fabric to route the traffic. They need to spin up more data to increase its traffic handling capability. They can also include the bot detection capability, though it is a pretty advanced functionality. If they could include DataDome like functionality, that is, bot prediction, then F5 Silverline Web Application Firewall will be top-notch in the market."

"I just hope the price can be cheaper."

"Sometimes tech support can be slow. They take more time assigning engineers to complex issues, however, they resolve the issues by joining me to fix them."

"Improvements could include the creation of highly optimized profiles, optimization deployments, and compression profiles for better performance."

"The navigation is difficult to use."

"We'd like more AI to be used. Right now, they don't use it enough."

"We need to have support for cloud protection, which is not offered by this solution."

More F5 Silverline Managed Services cons

Pricing and Cost Advice

"The solution has many features but there are ones that you need to pay for. Sometimes you have to find out which is available for free and which you have to pay for."

"There are no additional costs beyond the standard licensing fees."

"We are using the free version."

"Cloudflare's pricing is not much higher and is good for middle-level organizations."

"I think the pricing is competitive. I think as far as licensing is concerned it's pretty straightforward because it's based on domain. It's just that sometimes domains could be tricky with some customers."

"The product's pricing is minimal compared to other products."

"We are using the free tier of the solution."

"I believe their performance has improved, but I'd like to refrain from discussing the pricing aspect related to the cloud. The pricing, in my opinion, could be simplified, and I think they should consider reevaluating the pricing for support, as it can be quite high. At times, this cost can make it challenging to choose CARFAGuard or opt for the support."

More Cloudflare pricing and cost advice

"It starts at $20 and can easily go up to $200 monthly"

"The solution is expensive."

"Cloudflare offers different types of subscriptions for businesses, enterprises, and personal users, and the pricing is negotiable."

"The annual licensing fee is $10,000 USD."

"The solution's pricing option needs to be more transparent for enterprise clients."

"Cloudflare Web Application Firewall is more affordable than other solutions."

"What's my experience with pricing, setup cost, and licensing? I believe the pricing is not the best, but it's reasonable and acceptable. We also use the McAfee system in parallel. In terms of pricing, its okay - not great, but not bad either. It falls in the middle, which is acceptable. In terms of support licensing, last time, we were searching for a solution, and we considered products from resellers rather than directly from the cloud provider. However, the pricing we encountered was exceptionally high. As a result, we are inclined to select support from the reseller."

"It is not too pricey."

More Cloudflare Web Application Firewall pricing and cost advice

"The price of F5 Silverline Managed Services could be reduced."

"The price of F5 Silverline Managed Services could be better, they are not very flexible. The price of the solution is based on the requirements of the enterprise."

"The product’s pricing is reasonable."

"F5 Silverline Web Application Firewall works based on your bandwidth. They look at the clean bandwidth and do the pricing. 20% of a total pipe would be a clean bandwidth. The list price or a non-negotiated price for F5 Silverline Web Application Firewall would be around $2,200 per application per year for everything that you need. When you get into an enterprise kind of a setup, they negotiate this to the last bit. I would easily take 20% on that, which would be the cost, but it should cover all your Advance WAF features, bot protection, tech campaign, etc. It is built as a package and gives you most of the capability. You don't get the mobile SDK, which is an additional license. Mobile SDK is required only if you're buying or if you have a mobile application, and you are going to instrument F5 or Imperva into your mobile appliance. This anyways would be an additional module. It doesn't come within the WAF, but it is a WAF feature."

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Top Industries

By visitors reading reviews

Educational Organization

20%

Computer Software Company

13%

Comms Service Provider

Financial Services Firm

Educational Organization

23%

Computer Software Company

14%

Financial Services Firm

Manufacturing Company

Financial Services Firm

21%

Insurance Company

13%

Computer Software Company

11%

Comms Service Provider

10%

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...

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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...

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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.

See all answers

What do you like most about Cloudflare Web Application Firewall?

The product has a valuable security control functionality.

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What is your experience regarding pricing and costs for Cloudflare Web Application Firewall?

Cloudflare is cheaper compared to Azure WAF, which I have considered before.

See all answers

What needs improvement with Cloudflare Web Application Firewall?

The product can improve by having more multitenancy capability, which is currently not available. This improvement wo...

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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...

See all answers

What do you like most about F5 Silverline Managed Services?

The initial setup is straightforward.

See all answers

What is your experience regarding pricing and costs for F5 Silverline Managed Services?

The solution is expensive, however, the quality and performance are good.

See all answers

Comparisons

Quad9 vs Cloudflare

Compared 50% of the time

Akamai vs Cloudflare

Compared 4% of the time

Azure Front Door vs Cloudflare

Compared 4% of the time

Azure DNS vs Cloudflare

Compared 3% of the time

Amazon Route 53 vs Cloudflare

Compared 2% of the time

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Microsoft Azure Application Gateway vs Cloudflare Web Application Firewall

Compared 18% of the time

Fortinet FortiWeb vs Cloudflare Web Application Firewall

Compared 15% of the time

AWS WAF vs Cloudflare Web Application Firewall

Compared 11% of the time

Akamai App and API Protector vs Cloudflare Web Application Firewall

Compared 9% of the time

Barracuda WAF-as-a-Service vs Cloudflare Web Application Firewall

Compared 7% of the time

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F5 Distributed Cloud Services vs F5 Silverline Managed Services

Compared 23% of the time

Arbor DDoS vs F5 Silverline Managed Services

Compared 11% of the time

F5 Advanced WAF vs F5 Silverline Managed Services

Compared 11% of the time

Microsoft Azure Application Gateway vs F5 Silverline Managed Services

Compared 8% of the time

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Compared 8% of the time

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Product Reports

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Cloudflare Web Application Firewall

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F5 Silverline Managed Services

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Also Known As

Cloudflare DNS

Cloudflare WAF

F5 Silverline Web Application Firewall, F5 Silverline DDoS Protection

Overview

Cloudflare is a highly-regarded Content Delivery Network (CDN) and a Distributed Denial-of-Service (DDoS) protection solution. The robust global connectivity cloud platform that is Cloudflare ensures users are able to connect to the Internet quickly, securely, and reliably. Cloudflare is one of the world's largest networks in the marketplace today. Using Cloudflare, businesses, educational entities, NGOs, vloggers, bloggers, and anyone else with an internet presence can experience more secure, faster websites and applications.

Currently, there are millions of Internet locations on Cloudflare, and the Cloudflare network
continues to grow every day by the thousands. The solution is able to fulfill the requests for
millions of websites seamlessly and serves on average 45 million HTTP requests per second.

Cloudflare has safe, secure data centers in close to 300 cities worldwide to ensure every
client request is filled as quickly as possible. It is Cloudflare’s edge network that makes this
possible by keeping content and other services as close to each client as possible, so the
information requests are always only seconds away.

Many organizations that work in democracy, civil society, human rights, or the arts are able to
access Cloudflare's highest levels of protection for free via Project Galileo. Additionally, official
election websites can be secured from hacking and fraud through Cloudflare’s Project
Athenian, also at no additional cost.

Cloudflare can also help organizations of all sizes develop a robust zero-trust strategy to
ensure the highest levels of productivity and profitability. Employees, stakeholders, and end users have a greater level of satisfaction and overall improved user experience, which can, in
turn, result in higher revenues and overall ROI. Zero-trust and BYOD (bring your own device)
access ensure end users and employees always have the best resources and technology
available to them at all times.

Cloudflare benefits

Cloudflare has many benefits. Some of its most valuable benefits include:

- Faster load times

- Robust DNS security

- Intuitive cloud Web Application Firewall (WAF)

- Free universal SSL

- Image enhancement

- Automatic browser caching

- Next-generation cloud load balancer

- Accelerated Mobile Pages (AMP)

- Rate limiting

- Minification

- Zero-trust capabilities

- Cost-effective

- Reduced carbon footprint

Reviews from real users

“Many websites require an SSL certificate because they sell stuff and want SSL. Cloudflare
comes with an SSL certificate built in. It's automatic. You sign yourself up for Cloudflare, and
an SSL certificate automatically protects your website. If you have a connection between your
website and your host, the server, Cloudflare, and the host, you don't necessarily need a
certificate.” Spencer M., Owner at Tech Exchange

“What I like best about Cloudflare is that my company can use it to trace and manage
applications and monitor traffic. The solution tells you if there's a spike in traffic. Cloudflare
also sends you a link to check your equipment and deployment and track it through peering,
so it's a valuable tool.” Daniel P., Network Engineer at Ufinet

“The most valuable feature of Cloudflare is the GUI. You are able to control the solution very
well through the interface. There is a lot of functionality that is embedded in the service.” PeerSpot user, Competence Center Manager at a tech services company

Cloudflare

Cloudflare Web Application Firewall's intuitive dashboard enables users to build powerful rules through easy clicks and also provides Terraform integration. Every request to the WAF is inspected against the rule engine and the threat intelligence curated from protecting over 27 Million websites. Suspicious requests can be blocked, challenged or logged as per the needs of the user while legitimate requests are routed to the destination, agnostic of whether it lives on-premise or in the cloud. Analytics and Cloudflare Logs enable visibility into actionable metrics for the user.

Cloudflare

F5's Silverline Managed Services is a SaaS solution delivering DDoS protection, managed Web Application Firewall (WAF) services, and managed Shape Security Fraud and Anti-bot solutions.

Silverline services include 24x7 access to F5's Security Operations Center (SOC). F5's expert security professionals use F5 products with state-of-the-art security tools to ensure the best protection possible. As an add-on to Silverline DDoS or WAF services, Silverline Threat Intelligence integrates dynamic lists of threatening IP addresses to give context for policy decisions.

Sample Customers

Trusted by over 9,000,000 Internet Applications and APIs, including Nasdaq, Zendesk, Crunchbase, Steve Madden, OkCupid, Cisco, Quizlet, Discord and more.

crunchbase, udacity, marketo, okcupid, zendesk

City Bank, Ricacorp Properties, Miele, American Systems, Bangladesh Post Office

Buyer's Guide

Cloudflare Web Application Firewall vs. F5 Silverline Managed Services

March 2025

Free Report: Cloudflare Web Application Firewall vs. F5 Silverline Managed Services

Find out what your peers are saying about Cloudflare Web Application Firewall vs. F5 Silverline Managed Services and other solutions. Updated: March 2025.

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