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Atomic ModSecurity Rules vs Cloudflare Web Application Firewall 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

Atomic ModSecurity Rules
Ranking in Web Application Firewall (WAF)
29th
Average Rating
9.0
Reviews Sentiment
7.8
Number of Reviews
1
Ranking in other categories
No ranking in other categories
Cloudflare Web Application ...
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
 

Mindshare comparison

As of August 2026, in the Web Application Firewall (WAF) category, the mindshare of Atomic ModSecurity Rules is 0.8%, down from 1.0% compared to the previous year. The mindshare of Cloudflare Web Application Firewall is 3.8%, down from 5.8% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Web Application Firewall (WAF) Mindshare Distribution
ProductMindshare (%)
Cloudflare Web Application Firewall3.8%
Atomic ModSecurity Rules0.8%
Other95.4%
Web Application Firewall (WAF)
 

Featured Reviews

Vahid Babaey - PeerSpot reviewer
PhD Student at University of North Carolina at Charlott
Open rules have enabled me to secure web apps against obfuscated SQL injection and XSS attacks
The best feature Atomic ModSecurity Rules offers is the open source aspect. I believe that because it's open source, all of the developers, programmers, and security experts are able to update this WAF and provide more rules, creating a more secure WAF for all of the clients and customers around the world. By accessing Atomic ModSecurity Rules, it has helped me significantly. Because of this open source feature, I am able to generate new rules and update the WAF and use this WAF in my research and also give it to other clients and customers to use the updated WAF. All of this is done just because of the open-source feature, because it can be updated.
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.

Quotes from Members

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

Pros

"The best feature Atomic ModSecurity Rules offers is the open source aspect, because all of the developers, programmers, and security experts are able to update this WAF and provide more rules, creating a more secure WAF for all of the clients and customers around the world."
"This is a good product; it's reliable and scales well."
"The solution protects our application, which runs on the HTTP protocol, from DDoS attacks."
"Someone with a basic understanding of networking and security will be able to implement the firewall's basic features within 15 minutes."
"It protects web applications efficiently."
"The impact of Cloudflare Web Application Firewall's integration with existing web technologies on our site's performance and security measures is quite great, actually."
"I'm highly satisfied. It's remarkably user-friendly, enabling me to quickly identify issues, and deploy solutions, and it offers the necessary features."
"In general, it's a very good product: the solution is very stable, the performance is great, the product offers very good scalability, the pricing is very reasonable, the installation is very straightforward and quite simple, and technical support has a very fast response time and is helpful."
"We like that there's load balancing, firewall capabilities, DDoS protection, et cetera, all covered by Cloudflare."
 

Cons

"Additionally, I know that ModSecurity can block only SQL injection and XSS attacks, no more types of attacks."
"If they add logs history within the Cloudflare offering, that would be a great benefit."
"WAF doesn't directly affect bandwidth costs. It saves costs on protection. However, with the correct setup, it's difficult to determine if it saves costs overall due to the fixed enterprise plan fee."
"The dashboard could be more user-friendly."
"The platform's control features related to real-time authentication and response time need improvement."
"They have some limitations with third-party integrations."
"The solution's learning curve can still be further reduced"
"The rate limiting functionality could be enhanced, as we find it somewhat limited."
"Their documentation could be better. They don't have documentation that explains everything well."
 

Pricing and Cost Advice

Information not available
"We pay $210 per month for CloudFlare WAF."
"What's my experience with pricing, setup cost, and licensing? I believe the pricing is not the best, but it's reasonable and acceptable. We also use the McAfee system in parallel. In terms of pricing, its okay - not great, but not bad either. It falls in the middle, which is acceptable. In terms of support licensing, last time, we were searching for a solution, and we considered products from resellers rather than directly from the cloud provider. However, the pricing we encountered was exceptionally high. As a result, we are inclined to select support from the reseller."
"The solution is expensive."
"The pricing model is very straightforward compared to the competition. You just pay per month for the product and usage."
"Cloudflare offers different types of subscriptions for businesses, enterprises, and personal users, and the pricing is negotiable."
"It is not too pricey."
"Cloudflare Web Application Firewall is more affordable than other solutions."
"It starts at $20 and can easily go up to $200 monthly"
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Use our free recommendation engine to learn which Web Application Firewall (WAF) solutions are best for your needs.
908,834 professionals have used our research since 2012.
 

Top Industries

By visitors reading reviews
Comms Service Provider
29%
Hospitality Company
12%
Construction Company
9%
Government
9%
Construction Company
17%
Comms Service Provider
9%
Financial Services Firm
9%
Outsourcing Company
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
By reviewers
Company SizeCount
Small Business16
Midsize Enterprise6
Large Enterprise6
 

Questions from the Community

What needs improvement with Atomic ModSecurity Rules?
Atomic ModSecurity Rules can be improved by first studying and reading the structure of new obfuscated attacks, then trying to generate more specific and better rules to block these attacks, and th...
What is your primary use case for Atomic ModSecurity Rules?
My main use case for Atomic ModSecurity Rules is in my research, which tries to make websites secure against web attacks like SQL injection and XSS attacks. On one side, I try to generate some obfu...
What advice do you have for others considering Atomic ModSecurity Rules?
I would rate Atomic ModSecurity Rules nine out of ten. I chose nine out of ten because I have not studied other WAFs. I know that ModSecurity is the only open source WAF, but I believe that the oth...
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 have a dedicated IT team for that, and I'm not involved with Cloudflare much an...
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 every employee needs to check DNS requests and network traffic. We have strict ne...
 

Also Known As

No data available
Cloudflare WAF
 

Overview

 

Sample Customers

Information Not Available
crunchbase, udacity, marketo, okcupid, zendesk
Find out what your peers are saying about Imperva, Fortinet, F5 and others in Web Application Firewall (WAF). Updated: August 2026.
908,834 professionals have used our research since 2012.