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Imperva Application Security Platform vs R&S Web Application Firewall (DenyAll) comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Mar 22, 2026

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

Imperva Application Securit...
Ranking in Web Application Firewall (WAF)
1st
Average Rating
8.6
Reviews Sentiment
6.9
Number of Reviews
148
Ranking in other categories
CDN (2nd), Distributed Denial-of-Service (DDoS) Protection (3rd), Bot Management (1st), API Security (1st)
R&S Web Application Firewal...
Ranking in Web Application Firewall (WAF)
50th
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 November 2026, in the Web Application Firewall (WAF) category, the mindshare of Imperva Application Security Platform is 7.2%, down from 7.8% compared to the previous year. The mindshare of R&S Web Application Firewall (DenyAll) is 0.5%, 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 (%)
Imperva Application Security Platform7.2%
R&S Web Application Firewall (DenyAll)0.5%
Other92.3%
Web Application Firewall (WAF)
 

Q&A Highlights

PM
Sales Director with 51-200 employees
Aug 31, 2021
 

Featured Reviews

reviewer2818155 - PeerSpot reviewer
Senior Associate at a tech vendor with 10,001+ employees
Application protection has improved and reporting and dashboards still need refinement
I believe Imperva Application Security Platform should have a more interactive wizard. While the dashboard is good, it could be more eye-catching. Based on my perspective, I recommend modifying the dashboards, especially the main dashboard where I can see the traffic hit count, alerts, and other latest information. In terms of reporting, I find it challenging to create reports; in my earlier days, it was difficult. Over time, I have learned how to create reports, but it should be easier to do so. I have used other tools such as firewalls or SolarWinds, where creating a report is straightforward and does not take much time, unlike in Imperva, where I have to add many elements. Modifications in the integration aspects would also be beneficial.
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

"There are many features. There is ease of deployment. You can deploy the Imperva Web Application Firewall in two to three minutes. After that, you have to set the policies. For setting policies, you have toggle buttons. You can turn something on or off."
"Thanks to Incapsula, we got easily manageable DDoS protection; HTTP2 and SSL certificates for all the services; CDN in good locations; and we're now sure that our web services can't be exploited remotely because of the WAF feature."
"I have had a positive experience with Imperva Web Application Firewall's tech support so far. They are knowledgeable and respond on time."
"For me, it is the best solution available."
"The solution has been quite stable. I have not seen any bugs at all."
"IncapRules is one of the most valuable features, as you can create your own security and access control rules on top of your security policy. Using IncapRules we were able to easily block Layer 7 DDoS attacks several times."
"Very intuitive and granular configuration - It does not require much time, or advanced knowledge, for configuration and maintenance."
"Imperva monitors all traffic, even customer access, to the web application. Then, Imperva uses features like signatures to identify attacks like cross-site scripting or SQL injection."
"By publishing the application without fear, my customer has created new revenue by making the website available anytime and anywhere."
"The three most valuable features that I noticed are the geo-localization of the user, the IP reputation, and the compartmental analysis."
 

Cons

"The reporting is missing some features, such as: only two export formats, and the time period does not include the last day, week, year."
"The Imperva Web Application Firewall automations are good, but there is still room for improvement with them."
"In the past, I have bugs on the WAF. I've contacted Imperva about them. Future releases should be less buggy."
"The signature updates could be faster."
"Reporting and the main Sites dashboard could use refinement."
"Clients also often complain about the cost of the solution."
"The initial setup could be simplified. Every time you have to install the solution you have to get in touch with support or somebody that can to do that for you."
"Technical support is probably the biggest drawback."
"The area that should be improved is licensing."
 

Pricing and Cost Advice

"It is a very expensive solution. The price is very high. A lot of customers tell us that they would love to use Imperva more. I have some customers who have 50 websites, but they have only 10 websites on Imperva because of the price. They would love to have all their websites running through Imperva, but they can't. They have to choose the more critical websites to protect because the price is very high. It is a very good product, but it is too expensive. If you buy a plan for 20 megabytes and you don't consume all of your 20 megabytes, it is okay, but if you consume more, you are charged for the superior traffic."
"The price of this solution is a little bit high compared to competitors."
"The price is high compared to other solutions like FortiWeb."
"The cost of this solution depends on the platform."
"We have an issue with Imperva Incapsula in the Iraqi market because of the high price."
"The data packages are higher than our needs so we end up paying for data that we don't use."
"​Although the pricing can be a little high, it is worth the protection and security that it offers.​"
"It's an excellent product, but it can be very costly."
Information not available
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Answers from the Community

PM
Sales Director with 51-200 employees
Aug 31, 2021
Aug 31, 2021
Imperva is a strong choice, given their security focus and ongoing R&D into the product in areas such as bot management.
2 out of 5 answers
RF
Resp. Area de Segurança at REN
May 19, 2020
We have had a very good experience with FortiWeb.
JD
Principal Analyst at a tech services company with 1-10 employees
May 20, 2020
Imperva is a strong choice, given their security focus and ongoing R&D into the product in areas such as bot management.
 

Top Industries

By visitors reading reviews
Outsourcing Company
13%
Financial Services Firm
11%
Manufacturing Company
8%
Construction Company
7%
No data available
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business88
Midsize Enterprise25
Large Enterprise71
No data available
 

Questions from the Community

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.
What is your experience regarding pricing and costs for Imperva DDoS?
The pricing, setup costs, and licensing of Imperva DDoS are reasonable for the amount of technical capabilities provided. I would rate the pricing of Imperva DDoS as five, where one is very cheap a...
What needs improvement with Imperva DDoS?
I would like to see improvements in the pooling of threats and attacks, possibly to enlarge the scale of indicators of compromise. For example, the initiation of an attack on the endpoint level cou...
Ask a question
Earn 20 points
 

Also Known As

Imperva Bot Management, Imperva Web Application Firewall, Imperva API Security
Rohde & Schwarz Web Application Firewall, R&S WAF, DenyAll Web Application Security
 

Overview

 

Sample Customers

Hitachi, BNZ, Bitstamp, Moz, InnoGames, BTCChina, Wix, LivePerson, Zillow and more.
Information Not Available
Find out what your peers are saying about Imperva, Radware, F5 and others in Web Application Firewall (WAF). Updated: November 2026.
920,929 professionals have used our research since 2012.