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F5 Advanced WAF vs Imperva Web Application Firewall comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Apr 20, 2025

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
Sponsored
Average Rating
8.6
Reviews Sentiment
7.2
Number of Reviews
75
Ranking in other categories
CDN (1st), Distributed Denial-of-Service (DDoS) Protection (1st), Managed DNS (1st), Cloud Security Posture Management (CSPM) (14th)
F5 Advanced WAF
Average Rating
8.6
Reviews Sentiment
7.2
Number of Reviews
69
Ranking in other categories
Web Application Firewall (WAF) (2nd)
Imperva Web Application Fir...
Average Rating
8.6
Reviews Sentiment
7.1
Number of Reviews
52
Ranking in other categories
Web Application Firewall (WAF) (4th)
 

Featured Reviews

Spencer Malmad - PeerSpot reviewer
It's easy to set up because you point the DNS to it, and it's working in under 15 minutes
Cloudflare is highly scalable. Cloudflare is a system with a web portal that the end users like me see. It's a console where we can adjust the DNS, caching, and security features all in that console. Cloudflare owns thousands of servers across the world that cache the data. It's a powerful solution. When clients sign up for Cloudflare, they're getting this monster content delivery network, security, and a web application firewall in one. It's all rolled into one, and it's massive. Unless you have your website hosted on a massive hosting provider, there's no way that you can deliver the amount of data that Cloudflare can provide to the end users. If you have static content, there's no way that you can ever match what Cloudflare can do. Obviously, there are competitors to Cloudflare that do the same, but I'm saying other types of solutions. Let's say you go with F5. Great, that's on-prem. That's in your colo. You can't deliver as much data to the internet as you can with a CDN. You don't have to spend $20,000 on a net scaler, F5, or whatever Cisco's selling now. You don't have to buy that. You pay them $50 a month or $150 a month. It's totally worth it because even in five years, you'll never get the performance value, not just the actual ROI. You have to consider how much throughput you can get with Cloudflare.
Richard Polyak - PeerSpot reviewer
Easy event identification, highly stable, and customizable
Generally, F5 Advanced WAF initial setup is straightforward. However, our environment was more complex and it took us a little more time to customize the solution to where we needed it to be. Additionally, the customization didn't rectify everything. We had to do customization to a certain event to prevent attacks that it wasn't catching, but that might not necessarily be the solutions' fault. It could be more of our setup than the solution's fault and not being able to run the latest version or the newer version could be more of a limitation on our ability to put it in the right place. The whole implementation to have the solution run at the level we wanted it to take approximately five months. Our company's environment is one that we can't put a canned solution in front of. Our environment, cannot have a canned solution that might fit everybody else because of how customized this environment is. It does need a lot of tuning to meet our environment's requirements. I rate the initial setup of F5 Advanced WAF a three out of five.
Abdullah Jin - PeerSpot reviewer
Offers bot protection and DDoS Protection and protects public-facing portals
Support is one thing I wish Imperva could improve. They follow the phone model and keep rotating you from one customer service person to another. The layer one support isn't very clear about the workings of the product. My feedback is primarily about Imperva Cloud, not on-premise. On-premise is a whole new story. Support is the issue for Imperva Cloud. It's also a bit pricey. It's a premium service and very expensive. The licensing model is not very straightforward. Every feature is priced separately, and to enjoy maximum protection, you'll have to spend a lot of money. The licensing model is a bit complex, and each feature is very pricey. For example, API security and web application protection are two separate license packages.

Quotes from Members

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

Pros

"Smaller businesses have seen great ROI due to the low investment and strong performance."
"Easier http to https redirect using page rules"
"There are key things that are used for our enterprise customers, such as Lambda and DNS."
"It is a fast and secure DNS."
"Generally, I am satisfied with this product."
"The attacker won't have details since my public IP is anonymous. It offers us good privacy."
"Cloudflare has many features."
"We're using dynamic components to build flexible pages to create and manage Git merge requests for code and reviews."
"The solution is easily accessible on mobile and laptop devices."
"The most valuable features of F5 Advanced WAF are SSL uploading, signature, and anomaly detection. It is overall a high-quality solution."
"F5 helped to meet compliance and regulatory requirements."
"The product is used to secure web applications and has the ability to use API templates and bot protection features, such as blocking requests or presenting CAPTCHA pages to end users."
"F5's user-friendly interface and seamless integration stand out as the most valuable features for us."
"The most valuable feature of F5 Advanced WAF is its grand unity of the implementation, where you have the freedom to configure based on how it affects your use case or your organization. With the default setting of implicit deny, you can gradually start defining and deploying the tool to align with your environment, whether it is outdated, recent, or futuristic. This allows you to customize the solution to protect you from threat actors. You have the ability to define what the advanced threat act should do - whether it should alert, deny, or both - and it will deliver based on your configuration. Unlike other online solutions, F5 Advanced WAF provides flexibility to deliver to your unique environment the way you want."
"I definitely recommend this solution because of the time you save on analysis."
"This solution is an enterprise-class firewall that provides both load-balancing and security."
"There are some features that are configured by default, so even without doing much, it can still provide a level of protection."
"Compared to other web application firewalls in the market, Imperva does things in the most accurate way."
"Data masking is the most valuable feature of this solution."
"We can prevent attacks or issues even before they happen."
"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."
"It is easy to use and has good security."
"The most valuable features of the Imperva Web Application Firewall are performance and flexibility. We can extend or customize the box itself."
"The configurability of the tools and the ease of operation to be the most valuable feature of Imperva."
 

Cons

"One area of improvement is in the Access Rules. Hypothetically, if we wanted to block or challenge traffic outside of the United States, the only way to currently do that (as far as I know) is to enter every single country outside of the United States. That could be a labor intensive job. A solution could be to enable users to create a rule where traffic is only allowed within a certain country."
"There should be a specific price list for enterprise-level customers."
"DNS Management."
"Latencies are always a problem."
"There could be more courses with engineers. I like e-learning, however, having a specialist in a classroom is more comfortable for me."
"Integration involving API with other products could be more user-friendly."
"It would be beneficial for us if Cloudflare could offer a scrubbing solution. This would involve taking a snapshot of my website and keeping it live during a DDoS attack, ensuring uninterrupted service for our users. DDoS attacks are typically short in duration, and having Cloudflare maintain the site's availability from its secure network would enhance the overall user experience. I would appreciate it if Cloudflare could consider implementing this feature. Many organizations already utilize similar capabilities in their CDN platforms, where a static snapshot of the web page is displayed during DDoS attacks. In terms of features, Cloudflare needs to enhance its resilience and stay more focused on adopting new technologies. For instance, solutions like F5 XC Box, Access Solution, and Distributed Cloud Solution have impressive features, and Cloudflare should strive to match and exceed those capabilities. There's a need for improvement in areas like AI-based DDoS attacks and Layer 7 WAF features. Cloudflare should prioritize enhancements in areas such as behavioral DDoS and protection against SQL injection attacks, considering the prevalent trend of public exposure to the internet for business reasons. Overall, Cloudflare needs to invest more in advancing its feature set."
"The pricing could be improved."
"The solution's dashboard could be improved. When you're moving from policy to policy, the logs and the integration of the logs in other systems aren't straightforward."
"F5 needs to improve API protection with a single F5 solution, without requiring additional modules."
"For me, an area for improvement in F5 Advanced WAF is the reporting as it isn't so clear. The vendor needs to work on the reporting capability of the solution. What I'd like to see in the next release of F5 Advanced WAF is threat intelligence to protect your web application, particularly having that capability out-of-the-box, and not needing to pay extra for it, similar to what's offered in FortiWeb, for example, any request that originates from a malicious IP will be blocked automatically by FortiWeb. F5 Advanced WAF should have the intelligence for blocking malicious IPs, or automatically blocking threats included in the license, instead of making it an add-on feature that users have to pay for apart from the standard licensing fees."
"There is a learning curve that extends the time of implementation."
"The product could be more user-friendly for administrators."
"The Sandbox integration feature could be improved."
"Its price should be better. It is expensive."
"You have to buy another module with an extra license, to have the authentication feature."
"The UI interface needs improvement."
"It would be helpful to have a "recommended deployment", or even a list of basic features that should either be used or turned on by default."
"The solution works for particular zones but isn't always the best solution for all zones."
"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."
"I would like the solution to improve its support response time."
"There is nothing specific where the application firewall is falling short."
"Imperva Web Application Firewall is very expensive."
"One potential improvement for Imperva is enhancing its alert system."
 

Pricing and Cost Advice

"I think the pricing is competitive. I think as far as licensing is concerned it's pretty straightforward because it's based on domain. It's just that sometimes domains could be tricky with some customers."
"I give the price a five out of ten."
"It's a premium model. You can start at zero and work your way up to the enterprise model, which has a very high pricing level."
"That is one of the great features. I was able to access the majority of the features and services for free."
"A free version of the solution is available."
"The price is reasonable."
"I believe their performance has improved, but I'd like to refrain from discussing the pricing aspect related to the cloud. The pricing, in my opinion, could be simplified, and I think they should consider reevaluating the pricing for support, as it can be quite high. At times, this cost can make it challenging to choose CARFAGuard or opt for the support."
"The tool is a premium product, so it is very expensive."
"F5 Advanced WAF's pricing is high."
"I am not sure about pricing but licenses are available on Google."
"I think the price is very high."
"Its price is fair. We have done a couple of deals where they were able to give some kind of discount to the customers. The price was initially high for the customers, but after a couple of negotiations, it came within their budget. They were happy with that."
"A yearly license for F5 Advanced WAF is expensive."
"The price of F5 Advanced WAF could improve it is expensive."
"The way we deployed it, I would rate it a four out of five in terms of pricing."
"The solution is very expensive so should only be used in the right environment."
"Imperva’s pricing is a bit higher in the market since it offers a full-blown WAF."
"The price of Imperva Web Application Firewalls is expensive compared to others."
"The cost of this solution depends on the platform."
"Everybody complains about the price of this solution."
"There is a license for this solution and we purchase the license annually with no additional fees."
"The price of this solution is a little bit high compared to competitors."
"The tool is expensive."
"We sell three-year licenses for Imperva Web Application Firewall to our customers. The price is a little expensive."
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Top Industries

By visitors reading reviews
Educational Organization
17%
Computer Software Company
14%
Comms Service Provider
9%
Financial Services Firm
8%
Financial Services Firm
15%
Computer Software Company
13%
Government
8%
Comms Service Provider
6%
Financial Services Firm
17%
Computer Software Company
13%
Insurance Company
8%
Manufacturing Company
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
 

Questions from the Community

Which is the best DDoS protection solution for a big ISP for monitoring and mitigating?
Cloudflare. We are moving from Akamai prolexic to Cloudflare. Cloudflare anycast network outperforms Akamai static GR...
Which would you choose - Cloudflare DNS or Quad9?
Cloudflare DNS is a very fast, very reliable public DNS resolver. It is an enterprise-grade authoritative DNS service...
What do you like most about Cloudflare?
Cloudflare offers CDN and DDoS protection. We have the front end, API, and database in how you structure applications.
What do you like most about F5 Advanced WAF?
It's a fairly easy-to-use and user-friendly tool. My administrators and team also like its ability to customize the r...
What is your experience regarding pricing and costs for F5 Advanced WAF?
Subscription models have competitive pricing, while perpetual licenses involve an upfront higher cost, leading to amb...
What needs improvement with F5 Advanced WAF?
F5 Advanced WAF sells perpetual licenses as perpetual assets during sales without informing me that support ends afte...
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 hav...
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 ...
 

Also Known As

Cloudflare DNS
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Overview

 

Sample Customers

Trusted by over 9,000,000 Internet Applications and APIs, including Nasdaq, Zendesk, Crunchbase, Steve Madden, OkCupid, Cisco, Quizlet, Discord and more.
MAXIMUS, Vivo, American Systems, Bangladesh Post Office, City Bank
BlueCross BlueShield, eHarmony, EMF Broadcasting, GE Healthcare, Metro Bank, The Motley Fool, Siemens
Find out what your peers are saying about F5 Advanced WAF vs. Imperva Web Application Firewall and other solutions. Updated: April 2025.
849,686 professionals have used our research since 2012.