No more typing reviews! Try our Samantha, our new voice AI agent.

F5 Silverline Managed Services vs Imperva Application Security Platform vs NGINX App Protect comparison

Sponsored
 

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:
 

ROI

Sentiment score
7.6
Cloudflare WAF offers quick ROI, crucial protection for e-commerce, saves bandwidth, and balances cost with valuable free features.
Sentiment score
5.1
F5 Silverline Managed Services provides cost and time savings by replacing in-house cybersecurity, achieving varied ROI for users.
Sentiment score
5.8
Imperva Application Security offers significant ROI, enhancing security and compliance, with variable financial impacts and valued downtime mitigation.
Sentiment score
5.8
NGINX App Protect offers notable ROI, enhancing security, integrating with CICD pipelines, and providing compliance and time-saving benefits.
My experience with the pricing or licensing of Cloudflare Web Application Firewall is that many features can be accessed for free, so the pricing is definitely reasonable.
Owner at Hga consulting
They know how much money they are losing while the system is down, so by increasing the possibility of not having a down website or web application, return on investment can be calculated easily.
Head of Sales Services Department at a comms service provider with 51-200 employees
I was able to save over seven million dollars last year as return on investment in the company.
Senior Cybersecurity Consultant at Cyberoutcome Limited
I have seen a return on investment with Imperva Application Security Platform, as it is generally associated with time savings, because the review of alerts and the visibility it gives saves us significant operational time.
Ingeniero Preventa at Imperia
 

Customer Service

Sentiment score
6.3
Cloudflare WAF support is mixed; responsive for some, but Indian customers face call availability and administrative issues.
Sentiment score
6.2
F5 Silverline Managed Services experiences mixed reviews; some praise responsiveness, others criticize inefficiencies and slow issue resolution.
Sentiment score
7.0
Imperva Application Security Platform's support is praised for knowledge and communication, though response times vary, particularly initially.
Sentiment score
5.8
NGINX App Protect's support is reliable and helpful, though costs and occasional delays affect accessibility for some users.
I would rate the technical support with Cloudflare as excellent every time I've had to contact them.
Owner at Hga consulting
The technical support of Cloudflare Web Application Firewall rates between five and seven at maximum.
IT Manager at Amla Commerce
I think 24/7 expert support and streamlined compliance management definitely benefit my company's security efforts.
Associate Vice President at Novac Technology Solutions
Configuration problems largely arise from customer misunderstanding, leading to cases opened for configuration aspects where AI has become increasingly useful.
Network And Security Consultant at TD SYNNEX
They resolve the issues by joining me to fix them.
Design & Delivery Senior Network Security Architect at Qiddiya Investment Company
I would rate the technical support of Imperva DDoS as ten.
Head of Sales Services Department at a comms service provider with 51-200 employees
They need to work faster on the response time because of issues of urgent replies.
Senior Cybersecurity Consultant at Cyberoutcome Limited
Responsive support addressing urgent needs.
Cybersecurity Consultant at Accenture Singapore Services Pte Ltd
They were quick and efficient when we had issues.
Project Manager at a comms service provider with 10,001+ employees
I would rate the customer support a 9 on a scale of 1 to 10.
Tech Lead at a tech vendor with 51-200 employees
 

Scalability Issues

Sentiment score
7.7
Cloudflare Web Application Firewall offers impressive scalability and automated management, but additional features may incur costs for smaller organizations.
Sentiment score
7.4
F5 Silverline Managed Services offers scalable solutions with easy upgrades and reliability for both moderate and extensive data demands.
Sentiment score
7.4
Imperva's platform offers effortless scaling with global coverage and flexible licensing, simplifying expansion while maintaining performance stability.
Sentiment score
6.1
NGINX App Protect offers strong scalability praised by users, despite challenges with policy limits and deployment delays.
The scalability of Cloudflare Web Application Firewall rates between 8 to 9, as it depends upon the use cases and what exactly the client needs.
IT Manager at Amla Commerce
The solution is fully scalable, and I would give it a rating of ten on a scale of one to ten for scalability.
Design & Delivery Senior Network Security Architect at Qiddiya Investment Company
F5 Silverline Managed Services is not a concern due to its scalability.
Associate Vice President at Novac Technology Solutions
99% of customers are using the cloud version of Imperva DDoS protection, so they just purchase the new license and scale as needed.
Head of Sales Services Department at a comms service provider with 51-200 employees
I have not even needed support after deployment, since it has remained stable.
CTO at Malam Engineering PLC
It is easy to always scale to add more users.
Senior Cybersecurity Consultant at Cyberoutcome Limited
The scalability of NGINX App Protect is good and open source at its best.
Tech Lead at a tech vendor with 51-200 employees
 

Stability Issues

Sentiment score
8.2
Cloudflare Web Application Firewall is praised for stability, high performance, effective protection, daily use, and minimal downtime.
Sentiment score
7.4
F5 Silverline is praised for stability, reliability, high uptime, and effective support, outperforming competitors like Imperva and Akamai.
Sentiment score
7.9
Imperva Application Security Platform is praised for reliability, stability, and performance, with minimal issues and high user satisfaction.
Sentiment score
8.4
Users praise NGINX App Protect's stability and reliability, outperforming competitors, handling high traffic efficiently, and receiving high ratings.
The stability of Cloudflare Web Application Firewall deserves a perfect 10 out of 10.
IT Manager at Amla Commerce
It is also a stable product without much glitch or downtime.
Senior Presales Consultant at Techlab security
One notable drawback is that, unlike Fortinet, which offers fast track labs and continuous enablement, Imperva Application Security Platform lacks lab access and fast track labs for enablement and product advertising.
CTO at Malam Engineering PLC
We experienced downtime or crashes with Imperva Application Security Platform when traffic went really strong or fast because people tried to get tickets.
Soc Analyst at Cineplex Inc
It is a quality solution, and I would rate its stability as eight out of ten.
IT Architect at a financial services firm with 10,001+ employees
 

Room For Improvement

Cloudflare WAF needs feature enhancements, better usability, improved support, advanced DDoS protection, and solutions for latency and alerts.
F5 Silverline Managed Services needs better integration, user interface, and advanced features, with concerns over stability, pricing, and automation.
Imperva needs better integration, more data centers, improved pricing, UI, and AI to enhance security and usability.
NGINX App Protect needs enhancements in automation, UI, security, performance, and support, with complex setup and integration issues.
The product can improve by having more multitenancy capability, which is currently not available.
Network Architect at a computer software company with 11-50 employees
I think they're doing a good job with DNS and as support for any domains that I create or that my clients create, it's mandatory for me to ensure they have Cloudflare as their DNS provider.
Owner at Hga consulting
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.
CTO at PlayNirvana
F5 Silverline Managed Services needs to adapt compliances related to India's DPDP.
Associate Vice President at Novac Technology Solutions
Improvements could include the creation of highly optimized profiles.
Design & Delivery Senior Network Security Architect at Qiddiya Investment Company
The adaptable and flexible security can help prevent threats in learning mode, but admins need to be cautious about false positives that could affect production due to unrecognized vulnerabilities.
Network And Security Consultant at TD SYNNEX
To convince my clients, a purely on-prem solution would be ideal since they are financial institutions.
CTO at Malam Engineering PLC
Maybe Imperva DDoS could use endpoints to get information about the attacks before they commence from the endpoint level or establish cooperation with endpoint vendors to share this information.
Head of Sales Services Department at a comms service provider with 51-200 employees
Regarding return on investment, ROI, I can say it is noticeable with Imperva Application Security Platform.
Senior Presales Consultant at Techlab security
There was more information from F5 regarding hardware requirements and specifications to deploy the service.
IT Architect at a financial services firm with 10,001+ employees
For now, I think NGINX App Protect is good, but maybe I would like to see the logging feature added.
Dev Ops Engineer at BARQ Systems
The GUI and web GUI configuration could be improved to be easier to manage and use.
Dev Ops Engineer at adesso AG
 

Setup Cost

Cloudflare Web Application Firewall offers affordable, flexible pricing with no upfront costs, noted for competitiveness and included support services.
F5 Silverline Managed Services offer negotiable pricing, potentially higher than competitors, with additional costs for features like Web Application Firewall.
Imperva's comprehensive features justify its high pricing, though licensing complexity necessitates understanding billing models and customization.
NGINX App Protect offers reasonable annual pricing, ranging from $25,000 to $400,000, aligning with industry-leading solutions.
The solution is expensive
Design & Delivery Senior Network Security Architect at Qiddiya Investment Company
Regarding the pricing of F5 Silverline Managed Services, I would say it is quite affordable.
Associate Vice President at Novac Technology Solutions
I would rate the pricing of Imperva DDoS as five, where one is very cheap and ten is very expensive.
Head of Sales Services Department at a comms service provider with 51-200 employees
the setup cost was high, with the hardware installation in the data center being particularly expensive.
Cyber Security Product Owner at a energy/utilities company with 10,001+ employees
We have noticed faster response times and fewer security alerts because after doing some custom policy tuning, everything seemed to be aligned and we have fewer attacks to monitor and fewer alerts to monitor.
Senior Cybersecurity Consultant at Cyberoutcome Limited
 

Valuable Features

Cloudflare Web Application Firewall provides comprehensive security features, easy setup, scalability, and competitive pricing with praised performance and stability.
F5 Silverline Managed Services provides advanced security and traffic management with user-friendly features, real-time intelligence, and robust DDoS protection.
Imperva Application Security Platform provides comprehensive, scalable protection with advanced threat detection, ensuring low latency and compliance support.
NGINX App Protect provides comprehensive security features including automation, real-time threat detection, DDoS protection, and flexible deployment options.
The custom rules and the geo-redundant geographical rule feature, which allows me to implement geographical rules for customers, add significant value.
Network Architect at a computer software company with 11-50 employees
The best features of Cloudflare Web Application Firewall are multiple, including the WAF, rate limiter, and bot attack protection.
IT Manager at Amla Commerce
Cloudflare Web Application Firewall's advanced reporting and analytics tools add a layer that we're able to visualize and see before it actually hits the local firewall.
Owner at Hga consulting
It allows for centralized management of certificates, protecting applications from top ten attacks like SQL injection and cross-site scripting.
Design & Delivery Senior Network Security Architect at Qiddiya Investment Company
One part is positive security, which allows you to know vulnerabilities in depth, and you can implement CAPTCHA and MFA for logins, while also preventing known threats with included signatures.
Network And Security Consultant at TD SYNNEX
I can also use my load balancer in F5 because they are providing and acting as a load balancer too, and they will support the volumetric and DDoS attacks and malicious attacks.
Associate Vice President at Novac Technology Solutions
The API security feature is particularly valuable because most attackers do not try to come in from where it is expected.
Senior Cybersecurity Consultant at Cyberoutcome Limited
If someone attempts to access the server, the WAF blocks that SSRF alert, or RCE, Remote Code Execution alert, blocking immediately based on the signature, not only by the payload or the IP address.
SOC Analyst L1 at CMS-IT-SERVICES-PVT-LTD
It reduces the DDoS attacks and reduces the attacks from threat actors, including SQL Injection and zero-day attacks, by using dynamic application profiling from Imperva.
IT Security Analyst & Engineer (Project, Remote) Australia-Europe at a manufacturing company with 10,001+ employees
The most valuable feature is the ability to operate in a DevOps environment and to be configured through API and pipeline by the developers themselves.
IT Architect at a financial services firm with 10,001+ employees
Some threats like injection and running scripts, SQL injections, these all get stopped and rejected by the server.
Dev Ops Engineer at BARQ Systems
Detecting bots and blocking IPs have proven effective for securing applications.
Project Manager at a comms service provider with 10,001+ employees
 

Mindshare comparison

As of May 2026, in the Web Application Firewall (WAF) category, the mindshare of Cloudflare Web Application Firewall is 4.7%, down from 7.1% compared to the previous year. The mindshare of F5 Silverline Managed Services is 1.5%, up from 1.1% compared to the previous year. The mindshare of Imperva Application Security Platform is 7.7%, up from 7.1% compared to the previous year. The mindshare of NGINX App Protect is 2.2%, up from 1.7% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Web Application Firewall (WAF) Mindshare Distribution
ProductMindshare (%)
Imperva Application Security Platform7.7%
Cloudflare Web Application Firewall4.7%
NGINX App Protect2.2%
F5 Silverline Managed Services1.5%
Other83.9%
Web Application Firewall (WAF)
 

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.
Mohan Janarthanan - PeerSpot reviewer
Associate Vice President at Novac Technology Solutions
Cloud applications have gained stronger protection and real-time defense against web attacks
What really stands out for me in terms of advantages of F5 Silverline Managed Services is that in a single cloud platform, I can protect my web applications against attacks. I can also use my load balancer in F5 because they are providing and acting as a load balancer too, and they will support the volumetric and DDoS attacks and malicious attacks. Regarding the real-time threat intelligence feature, I do use this aspect in F5 Silverline Managed Services. It blocks malicious IPs or bad IPs for my server, protecting against my applications. For example, if someone is a bad actor trying to access via a malicious IP, I can block it because the threat intelligence has the capability to block the malicious IP. The adaptable and flexible security impacts threat response time positively. It is effective because it blocks my malicious traffic. Whenever I face issues related to that application, it automatically routes my traffic to act as a proxy and routes my traffic to their scrubbing center, especially in case of any volumetric attack.
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.
Valerio Guaglianone - PeerSpot reviewer
Dev Ops Engineer at adesso AG
Long-term web protection has supported reliable traffic management but needs a simpler interface
NGINX App Protect is a good product. I have used both versions from F5 -also the free version- (I mean the NGINX/NGINX One/App Protect free trial period), and I think it is a good product. It's stable, affordable, and easy to manage. NGINX App Protect is a comprehensive security solution that combines advanced WAF, DoS protection, API security, and DevSecOps automation in a lightweight, scalable package ideal for modern cloud-native architectures. The adaptive machine learning capabilities are truly commendable, as the solution can establish traffic baselines and detect anomalies in real time. It automatically adjusts security policies, minimizing the need for manual intervention and reducing false positives. Additionally, it supports scalable deployment across diverse environments, including on-premises, cloud, Kubernetes, and containers, offering both flexibility and scalability I have experience with the web server, F5 load balancer, and similar products provided by Ergon, for eg. the web application firewall and the Microgateway for K8S. I'm also familiar with F5 BIG-IP products.
report
Use our free recommendation engine to learn which Web Application Firewall (WAF) solutions are best for your needs.
895,399 professionals have used our research since 2012.
 

Top Industries

By visitors reading reviews
Construction Company
16%
Comms Service Provider
9%
Financial Services Firm
9%
Manufacturing Company
7%
Financial Services Firm
18%
Comms Service Provider
15%
Insurance Company
10%
Healthcare Company
6%
Financial Services Firm
12%
Manufacturing Company
8%
Computer Software Company
7%
Comms Service Provider
7%
Financial Services Firm
13%
Comms Service Provider
12%
Computer Software Company
9%
Healthcare Company
7%
 

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 Business6
Midsize Enterprise2
Large Enterprise10
By reviewers
Company SizeCount
Small Business88
Midsize Enterprise25
Large Enterprise70
By reviewers
Company SizeCount
Small Business9
Midsize Enterprise7
Large Enterprise13
 

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...
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...
What is your experience regarding pricing and costs for F5 Silverline Managed Services?
Regarding the pricing of F5 Silverline Managed Services, I would say it is quite affordable.
What needs improvement with F5 Silverline Managed Services?
In terms of areas for improvement, I would say that one scenario is that F5 Silverline Managed Services needs to adap...
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...
What is your experience regarding pricing and costs for NGINX App Protect?
I will not be able to answer about my experience with pricing, setup cost, and licensing for NGINX App Protect, as so...
What needs improvement with NGINX App Protect?
I did not face any issues with NGINX App Protect. The only issue that we had is that someone was trying to install th...
What is your primary use case for NGINX App Protect?
I have been dealing with NGINX App Protect and the WAF policy. I usually recommend NGINX App Protect for banking and ...
 

Comparisons

 

Also Known As

Cloudflare WAF
F5 Silverline Web Application Firewall, F5 Silverline DDoS Protection
Imperva Bot Management, Imperva Web Application Firewall, Imperva API Security
NGINX WAF, NGINX Web Application Firewall
 

Overview

 

Sample Customers

crunchbase, udacity, marketo, okcupid, zendesk
City Bank, Ricacorp Properties, Miele, American Systems, Bangladesh Post Office
Hitachi, BNZ, Bitstamp, Moz, InnoGames, BTCChina, Wix, LivePerson, Zillow and more.
Information Not Available
Find out what your peers are saying about Imperva, Fortinet, F5 and others in Web Application Firewall (WAF). Updated: April 2026.
895,399 professionals have used our research since 2012.