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FortiWeb Web Application Firewall (WAF) vs Imperva Web Application Firewall 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
8.4
Reviews Sentiment
7.2
Number of Reviews
74
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 Web Application Fir...
Average Rating
8.6
Reviews Sentiment
7.1
Number of Reviews
52
Ranking in other categories
Web Application Firewall (WAF) (4th)
 

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.
Abdullah Jin - PeerSpot reviewer
Offers bot protection and DDoS Protection and protects public-facing portals
Support is one thing I wish Imperva could improve. They follow the phone model and keep rotating you from one customer service person to another. The layer one support isn't very clear about the workings of the product. My feedback is primarily about Imperva Cloud, not on-premise. On-premise is a whole new story. Support is the issue for Imperva Cloud. It's also a bit pricey. It's a premium service and very expensive. The licensing model is not very straightforward. Every feature is priced separately, and to enjoy maximum protection, you'll have to spend a lot of money. The licensing model is a bit complex, and each feature is very pricey. For example, API security and web application protection are two separate license packages.

Quotes from Members

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

Pros

"Centralized, full-featured DNS."
"The DDoS protection is the most valuable aspect of the solution."
"The UI is good."
"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."
"The solution provides good load balancing and protection against DDoS attacks."
"The solution automatically detects and responds to certain types of traffic based on geolocation."
"Cloudflare DNS is widely used, and it's good for websites. If we use Cloudflare DNS and update one record, it updates in their office instantly."
"The simplicity of the overall dashboard makes it a great product for a user like me who has less understanding of the internet than a developer or other more technical people. It gives me peace of mind. I also love the easy customization of the Page Rules."
"FortiWeb identified potential DDoS attacks and suspicious domain activity, showcasing the value of its machine-learning capabilities."
"The machine learning feature reduces the false positives."
"The solution's integration with other products is easy. Its most valuable feature is the antivirus engine. The tool helps us comply with GDPR and KVKK standards."
"The solution is transparent and smooth."
"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."
"The machine learning on FortiWeb WAF is valuable."
"The most valuable features of the solution are SD-WAN, filtration, web filter, application filter, and IPS."
"The product is easy to configure."
"The solution is very scalable. It is one of the most important features. You can also expand resources and features as well."
"The most valuable features of the Imperva Web Application Firewall are DDoS, malware, and the other malicious threat prevention it provides. Additionally, third-party integration is available. You can forward the log for further analysis."
"The compliance is the most valuable aspect."
"The most important feature I have found to be the ease in how to do the backup and restores."
"It has fewer false positives"
"Imperva Web Application Firewall is stable."
"It mitigates all of the availabilities of risks around web applications."
"I have had a positive experience with Imperva Web Application Firewall's tech support so far. They are knowledgeable and respond on time."
 

Cons

"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."
"It should have easier documentation for the configuration. It's very technical and people who aren't technical should also be able to do the configuration."
"Latencies are always a problem."
"We are a product integrator and reseller, and we would like to have a better partner relationship, similar to a channel sales relationship. Sometimes we are on our own or get diverted by Cloudflare because they have direct sales, which competes with us and makes it difficult to build a relationship with this company since we want to be an MSP or a managed service provider for the solution."
"Cloudflare should add more documentation and pricing to the cloud version."
"I believe they currently have this feature, but there will most likely be integration with APIs so we can control some features through API."
"There could be more courses with engineers. I like e-learning, however, having a specialist in a classroom is more comfortable for me."
"Cloudflare could be improved by introducing a mid-tier pricing option."
"The product lacks features offered by enterprise-level firewall tools."
"For users not familiar with Fortinet, it could be beneficial to provide more user-friendly analytics and reporting."
"There is room for improvement in pricing, and actually, the price is a bit higher because on the same terms I purchased, the support subscription is so high."
"FortiWeb WAF's tuning causes trouble. It's complicated. The solution needs to improve the signature feature as well."
"The price is a little higher than the competitors."
"The documentation is poor."
"FortiWeb Web Application Firewall (WAF) needs to update its attack prevention database."
"WAF needs more signatures on FortiWeb and updates the database continuously to protect against new attacks."
"It would be useful if the solution used more intelligence in attack protection. For example, firewalls are to be dependent on the configuration, but if they could have some data science around it the solution would be even better. The profiling of the traffic, and making decisions surrounding that should be intelligence-based, instead of being based on the configuration of the firewall itself."
"Imperva Web Application Firewall is a good system, but we found that the visibility of the diverse-path server, e.g. where the traffic is coming from, the different IPs, etc., needs improvement."
"Their portal is very limited and needs improvement."
"The tool needs to improve CPU and storage memory."
"I don't really use it and therefore can't speak to areas of improvement."
"They recently separated the WAF and the DAM management gateways in order for each of these to be managed from different areas, so I believe it now requires additional investments for what was previously a single complete solution."
"It should be more user-friendly. Like other web solutions, it would be helpful to be able to easily do policy configuration and identification inside the application. Understanding the in-depth configuration of a policy is somewhat difficult for an engineer, and they can improve that."
"There is nothing specific where the application firewall is falling short."
 

Pricing and Cost Advice

"When you compare Cloudflare DNS to other solutions, such as Akamai, the price is reasonable."
"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 price is reasonable."
"So far I use free tier and happy with it. You can subscribe to business package if needed."
"The product's pricing is cheap."
"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."
"The pricing depends on the usage, but the cheapest would be around 5,000 USD a month."
"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."
"FortiWeb has a good presence because of its price."
"FortiWeb Web Application Firewall's pricing is suited for small or medium organizations."
"FortiWeb WAF is priced well for customers compared to other vendors' solutions."
"It is a cost-effective product. If you need an extra module in the product, there will be an extra cost in addition to the licensing fee."
"I rate the tool's pricing an eight out of ten."
"I rate the product price a four on a scale of one to ten, where one is a high price, and ten is a low price."
"It is a cheap solution."
"This product offers two pricing options: a standard package and an advanced package."
"The price is high compared to other solutions like FortiWeb."
"Everybody complains about the price of this solution."
"The cost of this solution depends on the platform."
"Imperva Web Application Firewall's pricing is expensive."
"There is a license for this solution and we purchase the license annually with no additional fees."
"Imperva Web Application Firewall price is higher compared to other solutions. However, everything is included in the price."
"Licensing can range from one to twenty thousand dollars annually. Additionally, some features, including software support, require an annual subscription as well."
"The solution's pricing is an issue."
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Top Industries

By visitors reading reviews
Educational Organization
19%
Computer Software Company
13%
Comms Service Provider
9%
Financial Services Firm
8%
Computer Software Company
15%
Financial Services Firm
12%
Manufacturing Company
12%
Comms Service Provider
8%
Financial Services Firm
17%
Computer Software Company
13%
Insurance Company
7%
Manufacturing Company
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...
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...
DDoS solutions: Any other solutions to consider aside from Radware DDoS Protection Service and F5 Silverline DDoS Protection?
You can have a look to Imperva Cloud WAF, the anti-DDoS mitigation is under 1s and works very well. I observed a lot ...
 

Also Known As

Cloudflare DNS
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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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BlueCross BlueShield, eHarmony, EMF Broadcasting, GE Healthcare, Metro Bank, The Motley Fool, Siemens
Find out what your peers are saying about FortiWeb Web Application Firewall (WAF) vs. Imperva Web Application Firewall and other solutions. Updated: April 2025.
847,772 professionals have used our research since 2012.