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

 

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

Fortinet FortiWeb
Ranking in Web Application Firewall (WAF)
1st
Average Rating
8.0
Reviews Sentiment
6.7
Number of Reviews
122
Ranking in other categories
No ranking in other categories
R&S Web Application Firewal...
Ranking in Web Application Firewall (WAF)
43rd
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 January 2026, in the Web Application Firewall (WAF) category, the mindshare of Fortinet FortiWeb is 8.1%, up from 7.9% 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) Market Share Distribution
ProductMarket Share (%)
Fortinet FortiWeb8.1%
R&S Web Application Firewall (DenyAll)0.3%
Other91.6%
Web Application Firewall (WAF)
 

Featured Reviews

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

"Some of the threat detection analytics and the filtering capabilities they give us for filtering a certain type of information that we don't want coming into the site are its valuable features. The analytics are pretty good in terms of being able to see what threats have been detected and mitigated, where they're coming from, and things like that."
"The platform's stability is good."
"It's easy to use and allows us to integrate solutions together."
"FortiGate is a stable product."
"The solution is stable."
"We find that it is quite stable and reliable."
"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."
"Fortinet FortiWeb uses smaller boxes while meeting the same technical specifications, which automatically makes it cheaper than F5."
"The three most valuable features that I noticed are the geo-localization of the user, the IP reputation, and the compartmental analysis."
 

Cons

"I had some small problems when I was upgrading firmware. After the upgrade, some of my certificates were deleted.​"
"Fortinet WAF came out recently, and there is not much feedback about customer experience. For each project, customers ask about the scenarios and references of the customers who have implemented this solution, which we don't have. They need to simplify the customer experience and provide more information so that we can propose Fortinet Fortiweb as a WAF solution to customers and convince them. They need to improve their service and training. We need good training to implement and use it properly and know more about it. We still don't know much about Fortinet WAF. We didn't get any proper training sessions. Other vendors like Cisco, Palo Alto, Check Point, and Barracuda provide such sessions. Whenever we receive a request from a customer for this solution, we just give the price. We don't propose this solution because we don't know much about it. We propose whatever we are familiar with and what is supported."
"They could integrate some kind of machine learning and AI facilities to automate workflows."
"Another area for improvement is logging. When troubleshooting, the logs sometimes take a while to update. We've had people report that some things aren't logged if they're successful. It's a bit hit-and-miss. For example, sometimes people access one of our services, and it's successful, but we don't see that in the logs."
"The price is a little higher than the competitors."
"I would like to have an antivirus option."
"Fortinet FortiWeb could improve data integration."
"I know that we have run into some issues with an SSL certificate and how it functions. Sometimes this breaks connectivity or just limits certain websites that are whitelisted."
"The area that should be improved is licensing."
 

Pricing and Cost Advice

"It's an expensive solution, although there are no additional costs."
"This product offers two pricing options: a standard package and an advanced package."
"The maintenance fee for this product could be improved."
"​The pricing is reasonable."
"The solution is cheaper compared with other solutions. It has a yearly license."
"There's only one payment for the duration of the license. On a scale from one to five, I would rate pricing at four. I have not encountered any additional costs on my projects involving Fortinet FortiWeb."
"The license to use Fortinet FortiWeb is approximately $14,000."
"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."
Information not available
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Top Industries

By visitors reading reviews
Financial Services Firm
10%
Computer Software Company
9%
Manufacturing Company
8%
Comms Service Provider
7%
No data available
 

Company Size

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

Questions from the Community

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. For VM machines, the price increases based on CPU configurations of 2, 4, or 8...
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 firmware versions and releasing them before checking, which leads to many bugs in th...
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 management.
 

Also Known As

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

Overview

 

Sample Customers

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, Amazon Web Services (AWS) and others in Web Application Firewall (WAF). Updated: January 2026.
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