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F5 Advanced WAF 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
7.1
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 Advanced WAF
Average Rating
8.6
Reviews Sentiment
7.2
Number of Reviews
69
Ranking in other categories
Web Application Firewall (WAF) (1st)
The Fastly Next-Gen WAF (po...
Average Rating
7.6
Reviews Sentiment
4.8
Number of Reviews
4
Ranking in other categories
Web Application Firewall (WAF) (28th)
 

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.
Ahmed Moamen - PeerSpot reviewer
Protects applications with versatile authentication features
F5 offers a versatile solution that can be integrated with APM in cases where integration with an external IDB is needed. It is useful for authentication backup if the on-prem directory service is unavailable. Additionally, its WAF functionality is valuable for protecting applications from attacks. It is a versatile and strong solution that's easy to understand and deploy.
Shashank N - PeerSpot reviewer
Provides good stability, but the agent-based approach could be more convenient
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. Additionally, the agent-based approach presents challenges with managing agents across versions and dependencies on specific application platforms like Apache or NGINX, leading to compatibility issues and complexity in integration. This agent-based system proved particularly difficult to manage.

Quotes from Members

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

Pros

"Even when there is a high load on our servers, Cloudflare is able to cache the data and serve it to users, ensuring they can still access the website."
"It's a great product because it's scalable, has great coverage, and is mature with good defenses against DDoS attacks."
"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."
"There are key things that are used for our enterprise customers, such as Lambda and DNS."
"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."
"The attacker won't have details since my public IP is anonymous. It offers us good privacy."
"The UI is good."
"It is a fast and secure DNS."
"My favorite feature of F5 is the ability to play around with the ciphers. I also like the ability to have an immediate display of the support IDs when a real blockage occurs. The protection offered is great."
"The initial setup was was easy to install."
"Good technology for mitigating different application attacks, e.g. DDoS, DNS, and layer seven attacks."
"The most valuable feature is that it is secure."
"F5 Advanced WAF offers features not available in other products."
"Provides good protection from attacks."
"It also has antivirus and DDoS mitigation capabilities. We have enabled these features."
"The most valuable features of the F5 Advanced WAF are the enhanced ASM and the performance. Additionally, the usability and effectiveness are very good."
"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."
"When configuring a web application firewall using Signal Sciences, we configure a rule whereby no one except a few people can access the application."
"Because The Fastly Next-Gen WAF (powered by Signal Sciences) is API-driven, we have integrations with the CI/CD pipeline through GitHub Actions, making it easy to integrate."
 

Cons

"The analytics, basically the dashboard, doesn't have much to it."
"An integrated SSO feature would be useful for Cloudflare DNS."
"Support response time could be improved."
"The pricing could be improved."
"The reporting can definitely be improved to offer a lot more explanation on something that may have happened or has actually happened."
"The tool needs to improve caching of servers. The product needs to include PFX certificate as well."
"Cloudflare's free plan is limited to 5,000 records for their free plan. They should increase that. For example, if I create a domain called abc.com and a subdomain called a.abc.com, my record count will be two. I can make a maximum of 5,000 subdomains. However, if we use our own DNS hosted on another provider, there is no limit. Their free plan also lacks name server customization."
"Cloudflare's console should be made more user-friendly."
"More legacy protocols should be added to the solution."
"There are opportunities for improvement in updating the user interface to a more modern look."
"The product could be more user-friendly, particularly the user interface for administrators."
"Support is a little slow."
"I would like to see a better interface and better documentation compatibility with other products. It's more complicated with OWASP."
"I would not expect traffic details to pass through the web application firewall across the length of the whole application. I think that there is a web application where it can let the application function without traffic going in into the WAF."
"The deployment side is quite complex."
"I would like for there to be a cloud-based solution, this would also help to improve scalability."
"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."
"The UI is not very intuitive and could be better."
"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."
 

Pricing and Cost Advice

"The pricing for the service is reasonable, neither excessively cheap nor prohibitively expensive. It aligns well with the value of their solution."
"The price of the solution is expensive."
"It's a premium model. You can start at zero and work your way up to the enterprise model, which has a very high pricing level."
"Cloudflare's pricing is not much higher and is good for middle-level organizations."
"I give the price a five out of ten."
"There are no additional costs beyond the standard licensing fees."
"The product's pricing is minimal compared to other products."
"The pricing depends on the usage, but the cheapest would be around 5,000 USD a month."
"The pricing for F5 Advanced WAF is comparable to a Rolls-Royce. Its price is a bit high when you compare it with other vendors. F5 Advanced WAF is a bit expensive. The customer was on a three-year plan and it was around $560,000."
"A yearly license for F5 Advanced WAF is expensive."
"F5 Advanced WAF is not a cost-effective solution. Although they are attempting to reduce prices with their VE and cloud options, they are more expensive than other solutions. The solution is more expensive on average."
"F5 Advanced WAF pricing structure should be adjusted to meet the need of small to medium-sized companies."
"I think the price is very high."
"I am not sure about pricing but licenses are available on Google."
"I rate F5 Advanced WAF's pricing a three out of ten."
"There are various plans available for Fortinet FortiWeb Cloud WAF as a Service, including a trial version."
"Signal Sciences is pretty cheap compared to other solutions."
"The pricing is 50% less than Akamai."
"The product has an affordable cost."
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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
15%
Computer Software Company
15%
Government
8%
Comms Service Provider
6%
Computer Software Company
11%
Manufacturing Company
11%
Retailer
10%
Healthcare Company
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 F5 Advanced WAF?
It's a fairly easy-to-use and user-friendly tool. My administrators and team also like its ability to customize the r...
What needs improvement with F5 Advanced WAF?
I do not have anything in mind right now that needs improvement. Generally, it works well. If we need any specific fe...
What do you like most about Signal Sciences?
The product's most valuable feature is its ability to set up the rules easily.
What is your experience regarding pricing and costs for Signal Sciences?
The pricing is very competitive compared to other providers. The pricing is definitely a factor in our decision-makin...
What needs improvement with Signal Sciences?
We do use it, but the UI can be improved as we mostly work through the CI/CD. It provides support, but sometimes it i...
 

Also Known As

Cloudflare DNS
No data available
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.
MAXIMUS, Vivo, American Systems, Bangladesh Post Office, City Bank
Chef, Adobe, Datadog, Etsy, GrubHub, Vimeo, SendGrid, Under Armour, Duo, AppNexus
Find out what your peers are saying about F5 Advanced WAF vs. The Fastly Next-Gen WAF (powered by Signal Sciences) and other solutions. Updated: July 2025.
865,295 professionals have used our research since 2012.