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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)
44th
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 February 2026, in the Web Application Firewall (WAF) category, the mindshare of Fortinet FortiWeb is 7.8%, down from 8.1% 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 FortiWeb7.8%
R&S Web Application Firewall (DenyAll)0.3%
Other91.9%
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

"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."
"It is a good product. We have just blocked everything coming from some geographical locations or certain countries, and it has been working very efficiently when I look at logs, events, and incidents generated from the system. It is generating very good analytic reports about it. This is the most valuable thing about this solution. It has load balancing and almost everything that a web application firewall needs. It is very flexible and easy to learn and configure. It can be easily learned and configured by using the information available on different channels such as YouTube."
"The solution's most valuable feature is its security profile."
"The initial setup was easy since it was possible to get remote support for the product."
"The solution's technical support is good."
"The policies and the filtering are the most valuable features, especially traffic, URL, and application filtering. The solution is excellent at detecting vulnerabilities."
"When we had Cisco we had around thirty thousand entries on our firewalls. Now we are down to three thousand. Fortinet has a mechanism to detect all of your entries which are not used, and it can clean it up."
"The solution is stable."
"The three most valuable features that I noticed are the geo-localization of the user, the IP reputation, and the compartmental analysis."
 

Cons

"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."
"The tool's WAF or web application firewall area has certain aspects that can be improved."
"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."
"FortiGate could be improved on the security end because we've had some incidents with the customer. Otherwise, there is no problem."
"FortiWeb WAF's tuning causes trouble. It's complicated. The solution needs to improve the signature feature as well."
"Fortinet's customer support needs improvement. The expertise of engineers varies across different time zones, affecting the effectiveness of the support provided, especially during our daytime."
"Fortinet FortiWeb needs to improve the way it's configured. Common services like publishing exchange should be done in one click only."
"The dashboards are not that configurable. Application-specific dashboards can be improved. If we have 50 applications, there should be something to see what's happening with these 50 applications. There could be a graph or a consolidated alert page where all alerts are inbuilt. They have other products that I can use, but this feature should be built into FortiWeb."
"The area that should be improved is licensing."
 

Pricing and Cost Advice

"The pricing is average; the product is neither particularly expensive nor affordable."
"The solution is a bit expensive when compared to other products."
"Due to the situation in Iran with the sanctions, the price of this solution is very expensive."
"There are no licensing costs."
"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."
"FortiWeb Web Application Firewall's pricing is suited for small or medium organizations."
"The pricing is in the middle. I would rate the pricing a five out of ten. It feels like a justified cost for the features."
"The maintenance fee for this product could be improved."
Information not available
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Top Industries

By visitors reading reviews
Computer Software Company
9%
Financial Services Firm
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, Imperva and others in Web Application Firewall (WAF). Updated: February 2026.
881,757 professionals have used our research since 2012.