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

Imperva and Rohde & Schwarz are both solutions in the Web Application Firewall (WAF) category. Imperva is ranked #7 with an average rating of 8.8, while Rohde & Schwarz is ranked #41. Imperva holds a 5.6% mindshare in WAF, compared to Rohde & Schwarz’s 0.2% mindshare. Additionally, 97% of Imperva users are willing to recommend the solution, compared to 100% of Rohde & Schwarz users who would recommend it.
Imperva Web Application Fir...
Read 52 Imperva Web Application Firewall reviews
  • 4,495 Views
  • 2,154 Comparison Views
97% willing to recommend
R&S Web Application Firewal...
Read 1 R&S Web Application Firewall (DenyAll) review
  • 251 Views
  • 125 Comparison Views
100% willing to recommend
 

Comparison Buyer's Guide

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Executive Summary
We performed a comparison between Imperva Web Application Firewall and R&S Web Application Firewall (DenyAll) based on real PeerSpot user reviews.

Find out what your peers are saying about Amazon Web Services (AWS), F5, Microsoft and others in Web Application Firewall (WAF).

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To learn more, read our detailed Web Application Firewall (WAF) Report (Updated: June 2025).
Buyer's Guide
Web Application Firewall (WAF)
June 2025
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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 Web Application Fir...
Ranking in Web Application Firewall (WAF)
7th
Average Rating
8.6
Reviews Sentiment
7.1
Number of Reviews
52
Ranking in other categories
No ranking in other categories
R&S Web Application Firewal...
Ranking in Web Application Firewall (WAF)
41st
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 July 2025, in the Web Application Firewall (WAF) category, the mindshare of Imperva Web Application Firewall is 5.6%, down from 6.6% compared to the previous year. The mindshare of R&S Web Application Firewall (DenyAll) is 0.2%, down from 0.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Web Application Firewall (WAF)
 

Q&A Highlights

PM
Aug 31, 2021
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.
See all answers
 

Featured Reviews

Mitesh D Patel - PeerSpot reviewer
Effectively defends against threats like cross-site scripting (XSS), SQL injection, and others
It does bring value. For example, consider a BFSI customer. Their application is critical and represents their brand. Without a WAF, an attack could take their application down, harming their reputation. It leads to hampering the customer's workflow. With an Imperva WAF, they protect against attacks like DDoS or SQL injection, ensuring their application remains available and customers are happy. That's the main benefit for both the customer and the organization. The impact depends on the customer's use case. If their business primarily operates online, a CDN is beneficial for traffic optimization. Moreover, the integration options depend on the specific use case of our customers. Generally, integration capabilities are good with SIEM (Security Information and Event Management) parts.
Read full review
SS
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.
Read full review

Quotes from Members

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

Pros

"Imperva Web Application Firewall is stable."
"Its inline transferring mode is the most valuable because it is 100% transparent. When you change the IP, there is no change on the network side. If you can't and want to try to reach an IP, you can reach the server IP. There are many other advanced security features in it. The smallest appliances of Imperva can handle the highest traffic at a customer site. For example, a smaller appliance from Imperva can provide you the same security as an F5 product."
"I am impressed with the product's scalability, availability, easy management, and security. We were able to integrate the product with Azure and Sentinel."
"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."
"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."
"The most valuable features of Imperva Web Application Firewall are the monitoring of databases and the dashboards are easy to understand."
"Data masking is the most valuable feature of this solution."
"The most important feature I have found to be the ease in how to do the backup and restores."
More Imperva Web Application Firewall pros
"The three most valuable features that I noticed are the geo-localization of the user, the IP reputation, and the compartmental analysis."
 

Cons

"It is complicated to integrate the solution's on-cloud version with other platforms."
"The product's customization capabilities are a bit problematic, requiring support cases for backend modifications."
"In the past, I have bugs on the WAF. I've contacted Imperva about them. Future releases should be less buggy."
"Imperva Web Application Firewall is very expensive."
"An improvement for Imperva WAF would be to reduce the number of false positives and create more strong use cases based on AI/ML or behavioral analytics."
"The user interface could be better."
"The support for the on-premises version needs improvement."
"The reporting is missing some features, such as: only two export formats, and the time period does not include the last day, week, year."
More Imperva Web Application Firewall cons
"The area that should be improved is licensing."
 

Pricing and Cost Advice

"It is very costly, but the return on investment is very high. Its cost was around $70,000, and we got it back in just six months."
"Make sure you understand the way that Imperva charges. It's very affordable. However, I would like to see a package with the Virtual Patching included. You get to do patching separately."
"The price is high compared to other solutions like FortiWeb."
"There are some licenses that you have to buy to use some features. Its price could be better. Price is always important because, at the end of the day, customers have a budget. If you can meet the budget, you can sell, and if you don't, you cannot sell."
"There are a couple of different licensing models."
"The price of this solution is a little bit high compared to competitors."
"It's an excellent product, but it can be very costly."
"We sell three-year licenses for Imperva Web Application Firewall to our customers. The price is a little expensive."
More Imperva Web Application Firewall pricing and cost advice
Information not available
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Answers from the Community

PM
Aug 31, 2021
Aug 31, 2021
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.
2 out of 5 answers
RF
May 19, 2020
We have had a very good experience with FortiWeb.
Read full answer
JD
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.
Read full answer
See all 5 answers
 

Top Industries

By visitors reading reviews
Financial Services Firm
16%
Computer Software Company
12%
Insurance Company
8%
Manufacturing Company
6%
No data available
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
 

Questions from the Community

Which is the best DDoS protection solution for a big ISP for monitoring and mitigating?
My recommendation is Imperva.
See all answers
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 have to look for other ADC's like F5, Imperva, Radware, Fortinet, etc.
See all answers
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 of DDoS attacks that were well managed (even not seen by the customer) by Imperv...
See all answers
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.
See all answers
 

Comparisons

Microsoft Azure Application Gateway vs Imperva Web Application Firewall Logo
Microsoft Azure Application Gateway vs Imperva Web Application Firewall
Compared 15% of the time
F5 Advanced WAF vs Imperva Web Application Firewall Logo
F5 Advanced WAF vs Imperva Web Application Firewall
Compared 12% of the time
Azure Front Door vs Imperva Web Application Firewall Logo
Azure Front Door vs Imperva Web Application Firewall
Compared 9% of the time
AWS WAF vs Imperva Web Application Firewall Logo
AWS WAF vs Imperva Web Application Firewall
Compared 8% of the time
Fortinet FortiWeb vs Imperva Web Application Firewall Logo
Fortinet FortiWeb vs Imperva Web Application Firewall
Compared 6% of the time
More Imperva Web Application Firewall Competitors
No data available
 

Product Reports

Buyer's Guide
Imperva Web Application Firewall
June 2025
Imperva Web Application Firewall reportDownload Imperva Web Application Firewall product report
Buyer's Guide
Web Application Firewall (WAF)
June 2025
R&S Web Application Firewall (DenyAll) reportDownload R&S Web Application Firewall (DenyAll) product report
 

Also Known As

No data available
Rohde & Schwarz Web Application Firewall, R&S WAF, DenyAll Web Application Security
 

Overview

Imperva Web Application Firewall is a versatile solution that protects web applications and databases from various attacks, including DDoS, cross-site scripting, and SQL injection attacks. It offers data security, availability, and access control and can be deployed on-premises or on the cloud. 

The solution has good security against web attacks and offers advanced bot protection, API security, and mitigation features. Imperva WAF is easy to configure and deploy; it has good customer service and an excellent user interface.

Imperva

Beyond the basic capabilities of traditional negative and positive security models, DenyAll’s scoring mechanism, user behavior tracking and advanced detection engines deliver best-of-breed security that won’t let you down. None of our customers have made the headlines with security breaches.

Web Services and automated machine-to-machine communications support business processes, internal and with ecosystem partners that are often critical. DenyAll makes it easy to optimize and secure these XML-based data flows, with capabilities found in no other WAF or SOA Gateway.

Rohde & Schwarz
 

Sample Customers

BlueCross BlueShield, eHarmony, EMF Broadcasting, GE Healthcare, Metro Bank, The Motley Fool, Siemens
Information Not Available
Buyer's Guide
Web Application Firewall (WAF)
June 2025
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