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Fortinet FortiWeb vs R&S Web Application Firewall (DenyAll) comparison

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Comparison Buyer's Guide

Executive Summary

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 Web Application ...
Sponsored
Ranking in Web Application Firewall (WAF)
7th
Average Rating
8.6
Reviews Sentiment
7.4
Number of Reviews
26
Ranking in other categories
No ranking in other categories
Fortinet FortiWeb
Ranking in Web Application Firewall (WAF)
1st
Average Rating
8.0
Reviews Sentiment
6.7
Number of Reviews
121
Ranking in other categories
No ranking in other categories
R&S Web Application Firewal...
Ranking in Web Application Firewall (WAF)
45th
Average Rating
9.0
Reviews Sentiment
8.5
Number of Reviews
1
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of March 2026, in the Web Application Firewall (WAF) category, the mindshare of Cloudflare Web Application Firewall is 5.4%, down from 6.9% compared to the previous year. The mindshare of Fortinet FortiWeb is 7.5%, down from 8.3% compared to the previous year. The mindshare of R&S Web Application Firewall (DenyAll) is 0.3%, up from 0.2% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Web Application Firewall (WAF) Mindshare Distribution
ProductMindshare (%)
Fortinet FortiWeb7.5%
Cloudflare Web Application Firewall5.4%
R&S Web Application Firewall (DenyAll)0.3%
Other86.8%
Web Application Firewall (WAF)
 

Featured Reviews

DB
CTO at PlayNirvana
Advanced security reporting has protected high-traffic betting platforms from constant attacks
I don't see room for improvement to Cloudflare Web Application Firewall. One thing I don't know much about because we have a dedicated IT team for that, and I'm not involved with Cloudflare much anymore. But if I were to compare them to F5, I would like to see more features that F5 offers. F5 has an option to bring the whole infrastructure, the whole WAF and all their packages, Bot Management, and everything else on your infrastructure. You need to install certain services from their side, and then you can choose if you would like requests to hit your servers immediately or if requests need to be proxied through F5 backbone. That would be a nice addition because we have 90% of the traffic as legit traffic coming from whitelisted servers. If it comes from whitelisted servers, I don't need to go every request through the backbone; I could easily just IP whitelist everything. Then I could maybe have Bot Management on my infrastructure that drastically reduces the price of Cloudflare. I would like to see Push CDN more improved in the next release of Cloudflare Web Application Firewall. And maybe something similar to Pushpin that Fastly has, which is an option where you can push messages that then can be scaled globally over the network. From our perspective, if we have a listener that listens for stock updates, I would just need to have one processor that pushes those updates to the Cloudflare API, and then Cloudflare would broadcast that message to all listeners. Cloudflare will check the order of the message, and if you, as a customer, are not connected or have some kind of network issue, when you reconnect, you will receive the latest state and missing updates.
HameedAhmed - PeerSpot reviewer
Joint Director at PAA
Security threats have been reduced through seamless deployment and strong integration with other tools
I have used Fortinet FortiWeb's integration features. We have easily integrated all of the applications with the product. Most of the applications we are using are in-house built. My technical team is looking after the best features. I have not used it extensively for maybe two and a half years. I have been involved in the installation, but I am not actually using the product. I work with it from time to time but not extensively. I would assess Fortinet FortiWeb's adaptive machine learning and artificial intelligence as having new patches installed regarding artificial intelligence, but when we bought it, I think the learning feature was there. Now they have installed artificial intelligence features through patches. We have a complete portfolio of Fortinet in our organization, including FortiMail, Fortinet FortiWeb, and FortiGate, along with multi-factor authentication. All of the products are from Fortinet. Fortinet tools integrate with each other and work in conjunction. I think Fortinet FortiWeb has helped us meet regulatory compliance because we are not a regulatory organization, but our sister organization is regulatory. We have regulatory compliance with the International Civil Aviation Authority, whose audit teams have checked our data center and these security products, and they are satisfied with us. The question about leveraging Fortinet FortiWeb's automated policy management does not pertain to my domain because I am not so technical, but I am in a management role now. My engineer is more technical than me. I would rate this product an eight point five out of ten.
SS
General Manager at 3R Technologie
Geo-localization and IP reputation help to keep our clients secure and more available
The area that should be improved is licensing. When using an active/passive cluster, we have to pay 70% of the master appliance and license for the passive server that does not work. Since we know that only one server works at a time, we should pay only one license for the appliances and for the support as well. In my opinion, this has to be improved. If possible, the client software should be a web application instead of downloading software for the management. This can avoid login problems when they update or patch.

Quotes from Members

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

Pros

"The security features are valuable. The particular feature we use is called OWASP."
"The Cloudflare Web Application Firewall's most valuable feature is its ease of configuration."
"The impact of Cloudflare Web Application Firewall's integration with existing web technologies on our site's performance and security measures is quite great, actually."
"The rate limiting features and customizations in terms of URL match and applying policies are valuable to me."
"The initial setup process is simple."
"The stability of Cloudflare Web Application Firewall deserves a perfect 10 out of 10."
"We like that there's load balancing, firewall capabilities, DDoS protection, et cetera, all covered by Cloudflare."
"Caching is the most valuable feature of Cloudflare Web Application Firewall."
"The solution's most valuable feature is its security profile."
"The most valuable features of the solution are SD-WAN, filtration, web filter, application filter, and IPS."
"FortiWeb has a very extensive library of known attack signatures, which makes the product fit for any environment, regardless if the customer uses Windows-specific or non-Windows-specific applications."
"Application delivery is strong."
"This is a good product and I strongly recommend it, especially for companies in the banking industry."
"It is cost-effective compared to other solutions."
"If I need something from tech support, I can get it answered within the hour."
"It helps us prevent attacks on servers."
"The three most valuable features that I noticed are the geo-localization of the user, the IP reputation, and the compartmental analysis."
"By publishing the application without fear, my customer has created new revenue by making the website available anytime and anywhere."
 

Cons

"The product can improve by having more multitenancy capability, which is currently not available."
"They have some limitations with third-party integrations."
"I have experienced some difficulties with Cloudflare's support as a customer based in India."
"Support can be challenging at times."
"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."
"Cloudflare Web Application Firewall should include port forwarding features."
"The solution's learning curve can still be further reduced"
"New releases and old releases have some bugs, some features do not work as good as we want but every new release the Fortinet team fixes up problems."
"Product support is a major concern; if FortiWeb wants to become a market leader, then it must provide better after-sales services."
"Regarding areas for improvement, the documentation needs work. We had issues with a customer because the documentation didn't clearly show which devices can connect with FortiWeb WAF, leading to misconfiguration and difficult meetings. We also need deeper technical support - finding who's responsible for technical aspects is challenging. Hungary has a good Fortinet office with strong sales and pre-sales employees."
"Fortinet FortiWeb could improve in reference architecture for different deployment scenarios."
"When you compare it with the F5 solution, FortiWeb is weak in detecting the Layer 7 DDoS attacks."
"Sometimes, even if you follow the documentation, it doesn't work as expected."
"Its threat intelligence capabilities may not be as advanced as some competitors."
"We have encountered issues with webhooks and management of FortiWeb Web Application Firewall's on-premise version."
"The area that should be improved is licensing."
"The area that should be improved is licensing."
 

Pricing and Cost Advice

"The pricing model is very straightforward compared to the competition. You just pay per month for the product and usage."
"Cloudflare Web Application Firewall is more affordable than other solutions."
"It starts at $20 and can easily go up to $200 monthly"
"The annual licensing fee is $10,000 USD."
"Cloudflare offers different types of subscriptions for businesses, enterprises, and personal users, and the pricing is negotiable."
"We pay $210 per month for CloudFlare WAF."
"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."
"The solution's pricing option needs to be more transparent for enterprise clients."
"Keep a loose margin between your actual bandwidth and the product sizing when using hardware appliances. Only virtual machines are upgradable to larger sizes."
"The price of Fortinet FortiWeb is reasonable. This is one of the key factors of why we use this solution."
"FortiWeb Web Application Firewall's pricing is suited for small or medium organizations."
"The solution is a bit expensive when compared to other products."
"The price of Fortinet FortiWeb depends from customer to customer because some customers are considering using other solutions, such as Imperva. The price of Fortinet FortiWeb sits well for the middle-sized customers that we deal with."
"The price is competitive."
"The license cost depends on the size of the box or the size of the solution. It can go from €200 Euros to a few hundred thousand Euros a year depending on your size."
"The product provides very good prices to customers. The price is set well and offers great value for money."
Information not available
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Top Industries

By visitors reading reviews
Computer Software Company
11%
Manufacturing Company
9%
Financial Services Firm
8%
Comms Service Provider
7%
Manufacturing Company
9%
Computer Software Company
8%
Financial Services Firm
8%
Comms Service Provider
7%
No data available
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business16
Midsize Enterprise6
Large Enterprise6
By reviewers
Company SizeCount
Small Business60
Midsize Enterprise27
Large Enterprise36
No data available
 

Questions from the Community

What needs improvement with Cloudflare Web Application Firewall?
I don't see room for improvement to Cloudflare Web Application Firewall. One thing I don't know much about because we...
What is your primary use case for Cloudflare Web Application Firewall?
We are using Cloudflare Web Application Firewall's advanced reporting and analytics tools with their Zero Trust, so e...
What do you like most about Fortinet FortiWeb?
The WAF profiles has been effective at mitigating web-based threats.
What is your experience regarding pricing and costs for Fortinet FortiWeb?
The pricing for Fortinet FortiWeb varies with different models having different prices. It depends on the requirement...
What needs improvement with Fortinet FortiWeb?
There is room for improvement in Fortinet FortiWeb. The team was only from FortiGate itself. They are making new firm...
Which Web Application Firewall (WAF) would you recommend? R&S or Imperva?
Imperva is a strong choice, given their security focus and ongoing R&D into the product in areas such as bot mana...
 

Also Known As

Cloudflare WAF
FortiWeb Web Application Firewall (WAF)
Rohde & Schwarz Web Application Firewall, R&S WAF, DenyAll Web Application Security
 

Overview

 

Sample Customers

crunchbase, udacity, marketo, okcupid, zendesk
Lush, Barnabas Health, Options, Riverside Healthcare, Hillsbourough County Schools, Columbia Public Schools, Schiller AG
Information Not Available
Find out what your peers are saying about Fortinet, F5, Imperva and others in Web Application Firewall (WAF). Updated: March 2026.
884,933 professionals have used our research since 2012.