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FortiWeb Web Application Firewall (WAF) vs Imperva DDoS 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
7.0
Cloudflare improves speed, security, and stability, leading to significant financial benefits with an ROI of 318% for businesses.
Sentiment score
7.3
FortiWeb offers 70% ROI by reducing costs, improving efficiency, and enhancing security with low false positives and resource savings.
Sentiment score
6.3
Companies value Imperva DDoS for compliance and cost savings, estimating ROI between 45% to 90% by mitigating DDoS risks.
WordPress security can be tricky, and that's where Cloudflare can be absolutely helpful for small businesses.
We have had ROI with the tool's use since it never gave us downtime and made us lose millions.
For the small project I was working on, using the basic tier provided a huge improvement at zero cost.
 

Customer Service

Sentiment score
7.2
Cloudflare's support is praised for responsiveness, though non-paying users and regions without local offices face challenges.
Sentiment score
6.6
FortiWeb's customer support is inconsistent, with variability in responsiveness and cost, yet shows improvement in elite support.
Sentiment score
7.1
Imperva DDoS offers professional customer service with some delays; enterprise support is effective, technical support sometimes needs escalation.
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.
We'd like a dedicated account manager.
Their support is truly exceptional when I compare it with similar large-sized companies.
 

Scalability Issues

Sentiment score
8.2
Cloudflare efficiently handles increased traffic and growth, offering scalability, robust network performance, and seamless expansion for enterprises.
Sentiment score
7.2
FortiWeb WAF is scalable, with large enterprises scaling easily, while medium businesses face hardware upgrade challenges for scaling.
Sentiment score
7.9
Imperva DDoS offers highly scalable, adaptable solutions with seamless expansion, efficiently handling large attacks, though scaling costs may be high.
I would rate the solution's scalability a ten out of ten since I didn't encounter any issues with it.
I rate its scalability a ten out of ten because I had no issues with it.
I rate the scalability a ten out of ten.
 

Stability Issues

Sentiment score
7.7
Cloudflare is generally stable and reliable, but occasional issues with downtime, speed, and DDoS protection are reported.
Sentiment score
8.1
Users find FortiWeb WAF stable; updates are frequent, but some encounter management challenges for zero-day vulnerabilities without FortiAnalyzer.
Sentiment score
7.7
Imperva DDoS is highly reliable with consistent uptime, minor issues, and positive user sentiment regarding its stability.
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.
 

Room For Improvement

Cloudflare needs analytics, threat insights, improved support, user-friendly dashboards, and simplified pricing, with consistent caching and security features.
FortiWeb needs better updates, integrations, pricing, and user-friendliness, with enhanced features, support, and performance for enterprise users.
Imperva DDoS requires improvements in customer support, pricing, interface design, security features, latency management, and enhanced documentation.
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.
the ability to integrate with the on-site active directory instead of just AD through Azure AD
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 flexible pricing with plans for small businesses to enterprises, balancing cost with comprehensive features and protection.
FortiWeb Web Application Firewall offers cost-effective packages for SMEs, with standard and advanced options, though some find it pricey.
Imperva DDoS offers competitive pricing with flexible options, but can be costly compared to Cloudflare or Akamai.
That's where Cloudflare shines for smaller businesses – it's ten times cheaper than Akamai.
I find it to be cheap.
It's cost-effective, but I think they should have a custom pricing model for enterprise customers based on the features you use.
 

Valuable Features

Cloudflare offers caching, DDoS protection, and CDN services, enhancing website speed and security with intuitive interface and global reach.
FortiWeb WAF offers machine learning, DDoS protection, and compliance features in a cost-effective SaaS model with extensive integrations.
Imperva DDoS provides robust, easy-to-use protection against attacks with advanced security measures and real-time traffic analysis.
Our scenario consisted of two web servers in different allocations to control access demands, and the load balancer did the job as expected, bringing security and stability to access points.
For me, the valuable feature is DDoS protection.
The most valuable features of the solution are performance and security.
Fortinet's pricing is way more competitive than Cisco or Palo Alto.
 

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)
FortiWeb Web Application Fi...
Average Rating
8.2
Reviews Sentiment
7.3
Number of Reviews
23
Ranking in other categories
Web Application Firewall (WAF) (16th)
Imperva DDoS
Average Rating
8.6
Reviews Sentiment
7.1
Number of Reviews
77
Ranking in other categories
CDN (7th), Web Application Firewall (WAF) (23rd), Distributed Denial-of-Service (DDoS) Protection (9th)
 

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.
IgnitiusMolepo - PeerSpot reviewer
Protects internal applications and prevents target attacks
The tool secures our critical applications, especially the mobile money application, which is often targeted by attacks. The solution provides rapid protection and has proven reliable against various threats. It blocks malicious traffic, including dormant and DDoS attacks, and offers integrated Web Application Firewall features to safeguard against compromises. You can set it up for customer-facing web applications because customers don't necessarily know all the IP addresses. It uses a source-based approach where any source accessing the application is defined by its IP. When accessing the application, it checks if they are using HTTP or HTTPS and blocks them if necessary. The tool's performance and security reporting capabilities contribute positively to IT security management. Consolidating management within the solution makes it easier for IT to handle the solutions. All functionalities managed on a single box reduce the number of boxes needed for management.
Syed Ubaid Ali Jafri - PeerSpot reviewer
I like the content monitoring feature which I haven't seen in other WAF solutions.
They could improve by minimizing false positive results. Although this occurs less with Imperva, we would like to see some further improvements. We have been using this product for last 1 years, it's result is very impressive. But due to the excessive load on the Web site where thousands of requests‎ are generated from legitimate users, however the request in which any sequential or specialised characters are requested would be directly blocked by impreva . Currently imperva blocks the special character request generated from the user, as I conduct a test where I am parsing the encoded html values of the same special characters to the input field, imperva bypasses these encoded values for example : ' i.e. %27 or / i.e %2F, the WAF bypasses these encoded characters. I hope that this device should have a capability to detect the pattern which is associated with Xss or Xsrf, rather then by not blocking the request which contains any special characters.
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Comparison Review

it_user68487 - PeerSpot reviewer
Nov 6, 2013
CloudFlare vs Incapsula: Web Application Firewall
CloudFlare vs Incapsula: Round 2 Web Application Firewall Comparative Penetration Testing Analysis Report v1.0 Summary This document contains the results of a second comparative penetration test conducted by a team of security specialists at Zero Science Lab against two cloud-based Web…
 

Top Industries

By visitors reading reviews
Educational Organization
17%
Computer Software Company
14%
Comms Service Provider
9%
Financial Services Firm
8%
Computer Software Company
16%
Financial Services Firm
13%
Manufacturing Company
10%
Comms Service Provider
8%
Financial Services Firm
16%
Computer Software Company
14%
Manufacturing Company
9%
Government
7%
 

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.
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)?
FortiWeb uses a subscription-based license, but there is also an option for a perpetual license. It's not the cheapes...
What needs improvement with FortiWeb Web Application Firewall (WAF)?
There are some issues pertaining to the migration. If some of my customers want to migrate from F5 to Fortinet Firewa...
What do you like most about Imperva Incapsula?
We use Imperva DDoS to stop DDoS attacks and reduce the amount of unwanted queries against web services or web scraping.
What is your experience regarding pricing and costs for Imperva DDoS?
The pricing is rated a ten on a scale where ten is very expensive. The solution is only cloud-based and does not prov...
What needs improvement with Imperva DDoS?
Pricing can be improved, as it is quite expensive. Additionally, support response times for emails can sometimes be d...
 

Also Known As

Cloudflare DNS
No data available
Imperva Incapsula
 

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.
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Hitachi, BNZ, Bitstamp, Moz, InnoGames, BTCChina, Wix, LivePerson, Zillow and more.
Find out what your peers are saying about FortiWeb Web Application Firewall (WAF) vs. Imperva DDoS and other solutions. Updated: April 2025.
850,028 professionals have used our research since 2012.