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F5 Advanced WAF vs Imperva Web Application Firewall comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Jan 12, 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
8.4
Reviews Sentiment
7.2
Number of Reviews
74
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
68
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

"The most valuable feature of Cloudflare DNS is its global reach and it is always evolving."
"What I like best about Cloudflare is that my company can use it to trace and manage applications and monitor traffic. The solution tells you if there's a spike in traffic. Cloudflare also sends you a link to check your equipment and deployment and track it through peering, so it's a valuable tool."
"I rate its stability a ten out of ten."
"Cloudflare is a security SaaS provider that provides security and protects us from any application layer attack."
"The solution provides good load balancing and protection against DDoS attacks."
"The solution is very good at mitigating threats."
"DDoS attacks target unprotected machines. Cloudflare detects and stops these attacks using internal systems. It identifies incoming DDoS attacks, issuing challenges or blocking them immediately."
"The most valuable features of the solution are performance and security."
"The most valuable features of F5 Advanced WAF are the security features and the protection."
"One of the most valuable features is the Local Traffic Manager."
"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."
"There are a lot of good features."
"F5 Advanced WAF has very good stability and scalability. Its initial setup was straightforward."
"I like all of the features, but the main one is the attack signatures."
"F5 Advanced WAF is a stable solution, we are satisfied. It is more stable than ForiWeb."
"Despite a few issues, F5 Advanced WAF is performing well for me."
"Imperva Web Application Firewall is stable."
"The solution can be configured in just a couple of minutes."
"The solution can scale."
"The solution has been quite stable. I have not seen any bugs at all."
"One good thing about Imperva Web Application Firewall is it can be on the cloud and also it can be on-premise."
"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."
"It mitigates all of the availabilities of risks around web applications."
"I have had a positive experience with Imperva Web Application Firewall's tech support so far. They are knowledgeable and respond on time."
 

Cons

"Sometimes their more advanced caching tools can cause higher first-byte times and problems with JavaScript."
"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."
"Cloudflare doesn't have a reverse lookup. We can only do a DNS lookup to get the IP address from the hostname. It doesn't work if you want to look up the hostname from an IPA address."
"We're facing challenges due to an upgrade in the machine learning model. The problem arises from some users abusing the APIs, resulting in an influx of suspicious traffic. Cloudflare's learning model mistakenly identifies this traffic as human. Consequently, it assigns it a higher trust score, akin to legitimate human traffic, causing complications in our architecture. Previously, such traffic would have been categorized as suspicious, enabling us to apply appropriate blocking rules. However, we encounter difficulties distinguishing between genuine and suspicious traffic with the new categorization. Despite these challenges, overall, Cloudflare remains the preferred solution compared to Azure, AWS CloudFront, and Google Cloud Armor."
"Cloudflare could offer a better view or maybe dashboards of the main resources used in the client."
"Areas like how assessment, discovery, and payload are dealt with and how it all comes into your organization can be considered when trying to make suggestions to Cloudflare for improvements."
"The product support needs to be accessible from more places, a wider area of coverage."
"The solution could work at being less expensive. It costs a lot to use it."
"The deployment side is quite complex."
"F5 Advanced WAF could improve the reporting. It's a bit difficult to populate, them. If you're not so familiar with the functions, such as where to find the logs and other settings."
"Scalability could be improved."
"Support is a little slow."
"Users would like to have an additional IP intelligence license to handle this within WAF itself without needing to engage with the SOC team."
"The BNS module needs improvement."
"F5 Advanced WAF could improve resource usage, it is CPU intensive. Additionally, adding automated remediation would be a benefit. For example, an easy button alerts us of the events that are occurring, and what we want to do at the time. An automated approach where somebody could be alerted very quickly. Instead of going and reconfiguring everything, an automated approach is what I'm looking at."
"The reporting could be clearer and embedded to include our movement data."
"I would like to improve the tool's turnaround time in terms of support."
"I'd like the option to pick your bot protection."
"Their portal is very limited and needs improvement."
"It's a complicated tool to keep."
"Sometimes, support tickets don't get addressed quickly."
"The solution works for particular zones but isn't always the best solution for all zones."
"I loved the approach of the cloud. The cloud has a lot of new features, like advanced web protection and DDoS protection. If those could also be on-boarded onto the on-prem versions, that would be ideal. They need to pay attention to both deployment options and not just favor one."
"There's always room for improvement. Occasionally, there might be false-positive alerts."
 

Pricing and Cost Advice

"We are using the free tier of the solution."
"That is one of the great features. I was able to access the majority of the features and services for free."
"The pricing for the service is reasonable, neither excessively cheap nor prohibitively expensive. It aligns well with the value of their solution."
"When you compare Cloudflare DNS to other solutions, such as Akamai, the price is reasonable."
"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."
"I give the price a five out of ten."
"The solution is expensive when compared to other products but offers unlimited bandwidth."
"In terms of licensing costs, we don't pay for licensing for Cloudflare. We only establish communication, then for peering, Cloudflare takes care of the cross-connection in different data centers."
"I don't have any issue with the pricing of this solution."
"The pricing is too high."
"It is expensive. Its price should be better. Its licensing is on a yearly basis. Its licensing is also based on the model. There are no additional costs."
"It is a little bit costly, but it has all the features that are required."
"The solution is very expensive so should only be used in the right environment."
"The cost is slightly above average."
"I am not sure about pricing but licenses are available on Google."
"It's more expensive than other solutions and depending on the modules, there can be additional fees."
"The pricing is somewhat expensive. It is actually a huge investment when compared to other countries."
"The price of this solution is a little bit high compared to competitors."
"It's an excellent product, but it can be very costly."
"The tool is expensive."
"The cost of this solution depends on the platform."
"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."
"The price of Imperva Web Application Firewalls is expensive compared to others."
"The price is high compared to other solutions like FortiWeb."
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Top Industries

By visitors reading reviews
Educational Organization
19%
Computer Software Company
13%
Comms Service Provider
9%
Financial Services Firm
8%
Financial Services Firm
15%
Computer Software Company
13%
Government
8%
Manufacturing Company
6%
Financial Services Firm
17%
Computer Software Company
13%
Insurance Company
7%
Manufacturing Company
7%
 

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
No data available
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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.
847,646 professionals have used our research since 2012.