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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

Cloudflare Web Application ...
Sponsored
Ranking in Web Application Firewall (WAF)
6th
Average Rating
8.6
Reviews Sentiment
7.4
Number of Reviews
26
Ranking in other categories
No ranking in other categories
Imperva Application Securit...
Ranking in Web Application Firewall (WAF)
1st
Average Rating
8.6
Reviews Sentiment
6.9
Number of Reviews
147
Ranking in other categories
CDN (2nd), Distributed Denial-of-Service (DDoS) Protection (4th), Bot Management (1st), API Security (1st)
R&S Web Application Firewal...
Ranking in Web Application Firewall (WAF)
49th
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 August 2026, in the Web Application Firewall (WAF) category, the mindshare of Cloudflare Web Application Firewall is 3.8%, down from 5.8% compared to the previous year. The mindshare of Imperva Application Security Platform is 7.6%, up from 7.6% 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 Platform7.6%
Cloudflare Web Application Firewall3.8%
R&S Web Application Firewall (DenyAll)0.5%
Other88.1%
Web Application Firewall (WAF)
 

Q&A Highlights

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

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.
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

"The most valuable part of the solution for us overall is exactly that it is a Software-as-a-Service product."
"The setup process is very simple for me."
"Cloudflare has positively impacted my organization by making it easier for me to handle and set up DNS for multiple clients; I can easily go in and access their accounts, make changes they need, and it's a one-stop shop."
"This solution does a good job of preventing web application attacks, SQL injections, and cross-site scripting attacks."
"We extensively use the solution every day. The solution is very stable; we haven’t seen any glitches."
"Very glad the WAF rulesets works out of box, and requires very little tuning or maintenance."
"This is a good product; it's reliable and scales well."
"The rate limiting features and customizations in terms of URL match and applying policies are valuable to me."
"Customer Support has been the biggest help in dire situations."
"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."
"The website itself is our first priority and we have seen improvements in that area -- it's faster."
"Bad-IP blocking and signature-based blocking for web application security."
"It works right out of the box once you integrate the application."
"The technical support is excellent."
"Imperva Application Security Platform has positively impacted my organization by providing strong protection for web applications, as many big companies in the UK use Imperva WAF as an essential protection layer, illustrating its effectiveness."
"Imperva Web Application Firewall is stable."
"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

"If they add logs history within the Cloudflare offering, that would be a great benefit."
"They have some limitations with third-party integrations."
"Cloudflare Web Application Firewall should include port forwarding features."
"The platform's control features related to real-time authentication and response time need improvement."
"The solution's learning curve can still be further reduced"
"Their documentation could be better. They don't have documentation that explains everything well. They have documentation for everything you're looking for, but they lack a single piece of documentation to tie everything together. As a new user or beginner, it took us a little bit of time to figure out how to put all these things in place."
"The dashboard could be more user-friendly."
"The ModSecurity core rules need to be updated."
"I am looking for more data enrichment. We should have the ability to add our own custom data to the system, to the live traffic."
"The solution needs to improve Integration with third parties for their on-prem deployment models. The integration is not that good yet."
"The salespeople tend to exaggerate its capabilities, which can cost you money if you don't verify the information."
"We looked at CloudFlare. We tried it but it didn’t work that well."
"The Imperva Web Application Firewall automations are good, but there is still room for improvement with them."
"Imperva should have more points of presence in Africa."
"Our support is currently coming from the US, and it is not very good."
"One thing that they really could improve on is the depth of the analytics."
"The area that should be improved is licensing."
 

Pricing and Cost Advice

"It starts at $20 and can easily go up to $200 monthly"
"We pay $210 per month for CloudFlare WAF."
"The solution is expensive."
"Cloudflare offers different types of subscriptions for businesses, enterprises, and personal users, and the pricing is negotiable."
"The pricing model is very straightforward compared to the competition. You just pay per month for the product and usage."
"The annual licensing fee is $10,000 USD."
"The solution's pricing option needs to be more transparent for enterprise clients."
"It is not too pricey."
"Everybody complains about the price of this solution."
"The cost of this solution depends on the platform."
"We are satisfied with the pricing."
"The pricing is somewhat expensive. It is actually a huge investment when compared to other countries."
"The cost is on par with other solutions such as Cloudflare and Akamai."
"Imperva’s pricing is a bit higher in the market since it offers a full-blown WAF."
"​Although the pricing can be a little high, it is worth the protection and security that it offers.​"
"There is a license or subscription renewal that our customers pay."
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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
Construction Company
17%
Comms Service Provider
9%
Financial Services Firm
9%
Outsourcing Company
7%
Financial Services Firm
12%
Construction Company
8%
Outsourcing Company
8%
Manufacturing Company
8%
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 Business88
Midsize Enterprise25
Large Enterprise70
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...
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...
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 provi...
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 o...
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Also Known As

Cloudflare WAF
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

crunchbase, udacity, marketo, okcupid, zendesk
Hitachi, BNZ, Bitstamp, Moz, InnoGames, BTCChina, Wix, LivePerson, Zillow and more.
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Find out what your peers are saying about Imperva, Fortinet, F5 and others in Web Application Firewall (WAF). Updated: August 2026.
908,858 professionals have used our research since 2012.