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F5 Advanced WAF vs Link11 comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Oct 12, 2025

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
6.5
Cloudflare users experienced increased performance, security, and cost-effectiveness, leading to improved loyalty and revenue despite difficult ROI calculations.
Sentiment score
7.5
F5 Advanced WAF delivers high ROI through cost savings, enhanced security, efficient compliance, and reduced management time, earning user praise.
Sentiment score
7.2
Link11 provided cost-effective security management, ensuring network protection, compliance, and seamless e-commerce operations with complete return on investment.
For the small project I was working on, using the basic tier provided a huge improvement at zero cost.
Security Specialist at a tech services company with 1,001-5,000 employees
In terms of return on investment with Cloudflare, it costs my time to set them up, but basically once they're set up, it's done.
Owner at Hga consulting
Time savings in daily operations come from the automatic learning and signature update reducing the need for constant manual rule management, allowing the security and network teams to spend significantly less time handling false positive application-related escalations.
Cyber Security Consultant at ProTechmanize
Subscription models offer clearer ROI due to a more competitive pricing scheme.
Global Channel Alliances Lead at a tech vendor with 10,001+ employees
F5 Advanced WAF protects our organization and provides security, achieving a return on investment.
Cybersecurity Team Leader at EMAK For Integrated Solutions
 

Customer Service

Sentiment score
7.0
Cloudflare's customer service is quick, but technical support feedback is mixed, with improvement needed in responsiveness and detailed assistance.
Sentiment score
6.9
Customers praise F5 Advanced WAF support's expertise but highlight response time issues and the need for improved regional consistency.
Sentiment score
8.3
Link11 customer service is praised for its expert support, though time zone differences can impact communication efforts.
Cloudflare does not offer hands-on technical support to fix customer problems but rather a self-service model.
Senior Consultant CDN at a comms service provider with 10,001+ employees
I would rate the technical support with Cloudflare as excellent every time I've had to call them.
Owner at Hga consulting
I have primarily worked not with the tool's customer support but with the product's sales engineers and technical sales engineers, who seem to know their stuff.
Principal Cyber Prevent and Defense Engineer at a comms service provider with 1,001-5,000 employees
Both response time and availability need to be improved.
Project Manager at IBM
F5 Advanced WAF provides the insights and notifications I need in terms of reporting and alerting.
Cybersecurity Team Leader at EMAK For Integrated Solutions
If there is a bug, the support is usually understanding and resolves issues.
CEO at CyberApp
 

Scalability Issues

Sentiment score
8.1
Users praise Cloudflare for seamless scalability, effective traffic management, easy upgrades, and robust global infrastructure without disruptions.
Sentiment score
7.4
F5 Advanced WAF offers scalable protection and seamless adaptability for enterprises, supporting dynamic growth and easy upgrades.
Sentiment score
7.6
Link11 offers seamless scalability, efficiently managing high-traffic and adapting to changes while ensuring uninterrupted service during digital attacks.
It is a SaaS tool, but the fact that they have workloads deployed across the world proves that it is a highly scalable tool.
Principal Cyber Prevent and Defense Engineer at a comms service provider with 1,001-5,000 employees
The tool offers very good performance, even during high-traffic periods.
Engineer at SITMEXICO
I rate the solution’s scalability an eight out of ten.
Independent Consultant at Unaikui
 

Stability Issues

Sentiment score
7.6
Cloudflare is highly rated for stability and uptime, with few past issues, especially on higher-tier plans.
Sentiment score
8.4
F5 Advanced WAF is highly stable, consistently rated 9-10 for stability, with smooth integration and performance across deployments.
Sentiment score
8.3
Link11 users appreciate its reliability, stability, and performance, noting minimal downtime and resolved setup challenges, reinforcing confidence.
I rate the solution’s stability an eight out of ten.
Independent Consultant at Unaikui
The service is very stable with no impacts during high-traffic periods.
Engineer at SITMEXICO
F5 Advanced WAF has been very reliable and consistent for us; in our on-premise enterprise setup, it has been stable and predictable in day-to-day operations without any unexpected crashes or WAF-related downtime in production.
Cyber Security Consultant at ProTechmanize
 

Room For Improvement

Enhancements needed in Cloudflare: analytics, CDN latency, API integration, user support, DNS, pricing, documentation, server coverage, WAF, and cache.
F5 Advanced WAF needs UI simplification, better integration and API protection, lower costs, and improved scalability, efficiency, and support.
Enhance Link11 with intuitive interfaces, real-time alerts, automated reporting, improved WAF, unified panels, and better bot management.
Despite these challenges, overall, Cloudflare remains the preferred solution compared to Azure, AWS CloudFront, and Google Cloud Armor.
Managed Services Manager at Adapture Technology Group
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.
Senior Cloud Solution Architect at Integrated Technology Solution Group (ITSG)
There are some performance considerations when it comes to dynamic content that involves fetching data from databases or using APIs.
Senior Solutions Architect at Think Power Solutions
Deployment training for F5 Advanced WAF is lacking and restricts growth by being inaccessible and costly for partners.
Global Channel Alliances Lead at a tech vendor with 10,001+ employees
Overall, these are not blockers, merely enhancement opportunities, and once tuned, F5 Advanced WAF is very stable and reliable; improving usability, reporting, and onboarding would make it even more effective for larger environments.
Cyber Security Consultant at ProTechmanize
There is excellent clarity in the LTM and the WAF.
Project Manager at IBM
 

Setup Cost

Cloudflare offers scalable pricing, from free to enterprise plans, providing significant value especially for mid-sized companies.
F5 Advanced WAF is costly for small businesses, but offers significant enterprise value with negotiable discounts and comprehensive features.
Link11 offers adaptable pricing with flexible plans and discounts, enhancing value despite perceived high costs for enterprises.
I find it to be cheap.
Engineer at SITMEXICO
I rate the product’s pricing a five out of ten, where one is cheap, and ten is expensive.
Senior Solutions Architect at Think Power Solutions
The tool is a premium product, so it is very expensive.
Principal Cyber Prevent and Defense Engineer at a comms service provider with 1,001-5,000 employees
Licensing is capacity-driven, so you need careful planning based on traffic volume and use cases, and adding features such as Bot Protection impacts costs; once licensing is clear and sized correctly, there are no surprises.
Cyber Security Consultant at ProTechmanize
Subscription models have competitive pricing, while perpetual licenses involve an upfront higher cost.
Global Channel Alliances Lead at a tech vendor with 10,001+ employees
The price is affordable and satisfactory.
CEO at CyberApp
 

Valuable Features

Cloudflare enhances performance and security with CDN caching, DDoS protection, and an easy-to-use dashboard, benefiting many users.
F5 Advanced WAF provides top-tier security with intelligent threat detection, adaptive learning, and seamless integration for diverse environments.
Link11 and Reblaze provide advanced security features, effective threat management, and seamless integration for comprehensive protection across platforms.
The most valuable features of the solution are performance and security.
Senior Cloud Solution Architect at Integrated Technology Solution Group (ITSG)
Techniques like minification and image compression reduce the size of assets, leading to better performance and faster user load times.
Senior Solutions Architect at Think Power Solutions
The solution has been able to compare it to the market, and I think the product has taken great strides in automating quite a bit of things, and they use a lot of AI.
Principal Cyber Prevent and Defense Engineer at a comms service provider with 1,001-5,000 employees
The Advanced Attack Signature database is very strong and regularly updated, effectively blocking SQL injections, cross-site scripting, command injections, and file inclusion attacks while allowing selective enabling or disabling of signatures to avoid blocking genuine traffic.
Cyber Security Consultant at ProTechmanize
F5 Advanced WAF offers the best features that are capable of stopping any type of attack, and it is a really reliable and stable product that you can rely on to stop any type of attack.
Cybersecurity Team Leader at EMAK For Integrated Solutions
The perpetual license, despite an initial higher cost, lacks transparency regarding support expiration.
Global Channel Alliances Lead at a tech vendor with 10,001+ employees
 

Categories and Ranking

Cloudflare
Sponsored
Average Rating
8.6
Reviews Sentiment
7.1
Number of Reviews
77
Ranking in other categories
CDN (1st), WAN Optimization (4th), Distributed Denial-of-Service (DDoS) Protection (1st), Managed DNS (1st), Domain Name System (DNS) Security (5th), Cloud Security Posture Management (CSPM) (13th)
F5 Advanced WAF
Average Rating
8.4
Reviews Sentiment
6.9
Number of Reviews
72
Ranking in other categories
Web Application Firewall (WAF) (2nd)
Link11
Average Rating
8.8
Reviews Sentiment
7.4
Number of Reviews
10
Ranking in other categories
CDN (14th), Web Application Firewall (WAF) (35th), Distributed Denial-of-Service (DDoS) Protection (24th), Bot Management (10th), API Security (21st)
 

Featured Reviews

HA
Owner at Hga consulting
Has helped manage client domains with streamlined access control and threat visibility
I don't know what areas could be improved with Cloudflare WAF; Cloudflare is constantly improving and adding features to their feature set. They're doing a good job, and as far as DNS and support for any domains that I create or my clients create, it's mandatory for me to make sure that they have Cloudflare as their DNS provider. The Cloudflare load balancing capability hasn't really helped in enhancing my website's uptime and resiliency because we don't really get that much traffic; it's mostly remote users, and web hosting is done by a web hosting service. It doesn't pay to try to host your own website.
Kallamuddin Ansari - PeerSpot reviewer
Cyber Security Consultant at ProTechmanize
Application security has protected critical banking services while policy learning minimizes false blocks
F5 Advanced WAF performs well overall, but I have noticed some points that could enhance the solution. Initially, policy tuning could be simpler, as while the learning engine is powerful, initial tuning still requires experienced engineers, which can be challenging for new teams due to the complexity of options and parameters. A more guided and simple tuning workflow would help reduce the learning curve. Additionally, tighter native integration with SIEM or SOAR tools would simplify correlation and investigations for security teams, although log exports are available. Overall, these are not blockers, merely enhancement opportunities, and once tuned, F5 Advanced WAF is very stable and reliable; improving usability, reporting, and onboarding would make it even more effective for larger environments.
SS
Senior Director of Engineering - Information Security at Apna
Offers flexibility with a kill switch for bypassing Reblaze if needed and provides a reliable Layer 7 defense against attacks
There is still some room for improvement when it comes to bot management from Reblaze because they are relatively new compared to other vendors in the town. AWS WAF, the Web Application Firewall from AWS, has a vast database of bad IP addresses due to its long-standing presence in this business. Reblaze, being a new entrant, is still building its database of bad IP addresses and malicious systems. So, Reblaze needs to work on that aspect. But other than that, I don't think scaling Reblaze has been an issue. There were some initial glitches, but they were all sorted out. So currently, I would say that the bot management and the database are areas they should focus on for further improvement.
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Top Industries

By visitors reading reviews
Computer Software Company
12%
Financial Services Firm
10%
Comms Service Provider
10%
Manufacturing Company
8%
Computer Software Company
14%
Financial Services Firm
14%
Government
8%
Manufacturing Company
7%
Computer Software Company
13%
Comms Service Provider
11%
Financial Services Firm
10%
Performing Arts
9%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business46
Midsize Enterprise8
Large Enterprise25
By reviewers
Company SizeCount
Small Business26
Midsize Enterprise15
Large Enterprise30
By reviewers
Company SizeCount
Small Business5
Midsize Enterprise3
Large Enterprise2
 

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?
Regarding the price, I think the cost is a bit higher compared to others. Earlier we were using Radware, and compared...
What needs improvement with F5 Advanced WAF?
In terms of additional features I would like to see from them in the future, I think the GTM is a bit complicated to ...
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Also Known As

Cloudflare DNS
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Reblaze
 

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
CBC, Hermes, Gartner
Find out what your peers are saying about F5 Advanced WAF vs. Link11 and other solutions. Updated: December 2025.
879,259 professionals have used our research since 2012.