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Cloudflare Web Application Firewall vs The Fastly Next-Gen WAF (powered by Signal Sciences) 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:
 

Categories and Ranking

Cloudflare
Sponsored
Average Rating
8.6
Reviews Sentiment
7.2
Number of Reviews
75
Ranking in other categories
CDN (1st), Distributed Denial-of-Service (DDoS) Protection (1st), Managed DNS (1st), Cloud Security Posture Management (CSPM) (14th)
Cloudflare Web Application ...
Average Rating
8.4
Reviews Sentiment
7.5
Number of Reviews
23
Ranking in other categories
Web Application Firewall (WAF) (7th)
The Fastly Next-Gen WAF (po...
Average Rating
7.6
Reviews Sentiment
7.1
Number of Reviews
3
Ranking in other categories
Web Application Firewall (WAF) (26th)
 

Featured Reviews

Spencer Malmad - PeerSpot reviewer
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.
SachidDoshi - PeerSpot reviewer
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.
Archana Heeralal - PeerSpot reviewer
A good solution to implement web application firewall for applications
There are some lags in Signal Sciences for the web application firewalls. Even if we create some custom rules, Signal Sciences cannot capture some of the malicious traffic. There is a little bit of complexity with custom rules that should be removed. Signal Sciences should add a feature called rate limiting with multiple options, wherein I can create a rate limiting based on the cookie request or the IP.

Quotes from Members

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

Pros

"Its ease of integration with Office 365 and the fact that it's a good product compared to what I had before"
"It is a stable solution. I rate the stability a ten out of ten...I rate the scalability a ten out of ten."
"It is a fast and secure DNS."
"Smaller businesses have seen great ROI due to the low investment and strong performance."
"From what I've seen so far, there are no negatives to report as of yet"
"The most valuable feature of Cloudflare DNS is security."
"Cloudflare offers CDN and DDoS protection. We have the front end, API, and database in how you structure applications."
"I like Cloudflare's application gateway and DDoS protection."
"It's pretty convenient and pretty easy to set up and run. And then kind of for static content, it also offers caching."
"It is a SaaS solution unlike much of the competition."
"The Cloudflare Web Application Firewall's most valuable feature is its ease of configuration."
"Someone with a basic understanding of networking and security will be able to implement the firewall's basic features within 15 minutes."
"It protects web applications efficiently."
"The product has a valuable security control functionality."
"The solution protects our application, which runs on the HTTP protocol, from DDoS attacks."
"Technical support has a very fast response time and they are helpful."
"When configuring a web application firewall using Signal Sciences, we configure a rule whereby no one except a few people can access the application."
"The product's most valuable feature is its ability to set up the rules easily."
"Fastly (Signal Sciences) integrates and tags the intermittent traffic based on patterns. It generates signals and provides them in a dashboard where we can view them and decide whether to allow or deny traffic. It's a more advanced and easy-to-navigate dashboard."
 

Cons

"Although I think it's quite good, it doesn't provide me with all the features I would expect to have if I were using Imperva."
"The solution could use more analytics on the backend to give us more insights into everything. More reports would be helpful."
"It would be beneficial for us if Cloudflare could offer a scrubbing solution. This would involve taking a snapshot of my website and keeping it live during a DDoS attack, ensuring uninterrupted service for our users. DDoS attacks are typically short in duration, and having Cloudflare maintain the site's availability from its secure network would enhance the overall user experience. I would appreciate it if Cloudflare could consider implementing this feature. Many organizations already utilize similar capabilities in their CDN platforms, where a static snapshot of the web page is displayed during DDoS attacks. In terms of features, Cloudflare needs to enhance its resilience and stay more focused on adopting new technologies. For instance, solutions like F5 XC Box, Access Solution, and Distributed Cloud Solution have impressive features, and Cloudflare should strive to match and exceed those capabilities. There's a need for improvement in areas like AI-based DDoS attacks and Layer 7 WAF features. Cloudflare should prioritize enhancements in areas such as behavioral DDoS and protection against SQL injection attacks, considering the prevalent trend of public exposure to the internet for business reasons. Overall, Cloudflare needs to invest more in advancing its feature set."
"Latencies are always a problem."
"There might be helpful if there was some web application firewall feature."
"The product needs to improve its automation."
"Even if I wanted to, I wouldn't be able to buy Cloudflare in my country."
"Technical support is not well developed. While there are good engineers, Cloudflare does not offer hands-on technical support to fix customer problems but rather a self-service model."
"Cloudflare Web Application Firewall should improve visibility for a customer."
"The dashboard could be more user-friendly."
"The ModSecurity core rules need to be updated."
"A key challenge arises when dealing with numerous integrations with HVAC systems. Depending on the specifics, there might be some configuration mismatches, which necessitate specific support."
"Support can be challenging at times."
"The learning curve was steep initially."
"The notification part could be improved. It's very much connected to Web Application Firewall, rate-limiting, and DDoS protection."
"There could be an option to duplicate the cluster to maintain the consistency of rules."
"The areas that could be improved in Signal Sciences include the effectiveness of rules, as many didn't function optimally and required custom rule-writing to address bypasses for WAF."
"Fastly don't support caching for China users. That's the only feature lacking compared to Akamai."
"Even if we create some custom rules, Signal Sciences cannot capture some of the malicious traffic."
 

Pricing and Cost Advice

"The price of the solution is expensive."
"We are using the free version."
"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."
"There are no additional costs beyond the standard licensing fees."
"So far I use free tier and happy with it. You can subscribe to business package if needed."
"The pricing for the service is reasonable, neither excessively cheap nor prohibitively expensive. It aligns well with the value of their solution."
"For Cloudflare, I recommend it heavily for small businesses with revenue under a couple of million dollars. Onboarding is easy, and they even have a free plan. This makes it simple for businesses in the $100,000-$500,000 range to try it out and see its value, allowing them to scale up their infrastructure as needed."
"That is one of the great features. I was able to access the majority of the features and services for free."
"The solution is expensive."
"The solution's pricing option needs to be more transparent for enterprise clients."
"It starts at $20 and can easily go up to $200 monthly"
"Cloudflare offers different types of subscriptions for businesses, enterprises, and personal users, and the pricing is negotiable."
"Cloudflare Web Application Firewall is more affordable than other solutions."
"The pricing model is very straightforward compared to the competition. You just pay per month for the product and usage."
"The annual licensing fee is $10,000 USD."
"We pay $210 per month for CloudFlare WAF."
"Signal Sciences is pretty cheap compared to other solutions."
"The product has an affordable cost."
"The pricing is 50% less than Akamai."
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Top Industries

By visitors reading reviews
Educational Organization
17%
Computer Software Company
14%
Comms Service Provider
9%
Financial Services Firm
8%
Educational Organization
22%
Computer Software Company
14%
Financial Services Firm
8%
Manufacturing Company
6%
Educational Organization
18%
Computer Software Company
12%
Manufacturing Company
11%
Financial Services Firm
10%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
 

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.
What do you like most about Cloudflare Web Application Firewall?
The product has a valuable security control functionality.
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.
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...
What do you like most about Signal Sciences?
The product's most valuable feature is its ability to set up the rules easily.
What needs improvement with Signal Sciences?
Fastly don't support caching for China users. That's the only feature lacking compared to Akamai.
 

Also Known As

Cloudflare DNS
Cloudflare WAF
Signal Sciences Next-Gen WAF, Signal Sciences RASP
 

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.
crunchbase, udacity, marketo, okcupid, zendesk
Chef, Adobe, Datadog, Etsy, GrubHub, Vimeo, SendGrid, Under Armour, Duo, AppNexus
Find out what your peers are saying about Cloudflare Web Application Firewall vs. The Fastly Next-Gen WAF (powered by Signal Sciences) and other solutions. Updated: April 2025.
849,686 professionals have used our research since 2012.