F5 Silverline Managed Services vs Neustar UltraDDoS [EOL] comparison

F5 and TransUnion are both solutions in the Distributed Denial-of-Service (DDoS) Protection category. Additionally, 100% of F5 users are willing to recommend the solution, compared to 100% of TransUnion users who would recommend it.

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Executive SummaryUpdated on Nov 2, 2025

Neustar UltraDDoS EOL and F5 Silverline Managed Services compete in the DDoS protection category. F5 Silverline appears to have the advantage due to more advanced features, offering enhanced protection capabilities despite higher costs.

Features: Neustar UltraDDoS EOL provides robust protection capabilities, seamless integration with existing systems, and a straightforward deployment. F5 Silverline Managed Services delivers advanced threat intelligence, automated attack mitigation, and precise threat management, making it particularly compelling for comprehensive security solutions.

Ease of Deployment and Customer Service: Neustar UltraDDoS EOL offers a straightforward deployment process and responsive customer service. F5 Silverline Managed Services provides flexible deployment options suitable for businesses with complex needs, alongside strong customer support, giving it an edge for enterprises requiring adaptability.

Pricing and ROI: Neustar UltraDDoS EOL is seen as cost-effective with good ROI, ideal for budget-conscious organizations. F5 Silverline Managed Services, though more expensive initially, is viewed as a beneficial long-term investment due to its security capabilities, which may justify its higher setup cost.

To learn more, read our detailed Distributed Denial-of-Service (DDoS) Protection Report (Updated: May 2026).

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Distributed Denial-of-Service (DDoS) Protection

May 2026

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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

Featured Reviews

M.A. Faisal

General Manager at bKash Limited

Advanced protection has secured critical web workloads and provides clear traffic visibility

From a security perspective, there remains a security loophole, as some browsers in the market can bypass the Turnstile solution, which requires approximately 40 seconds to do so. From a performance perspective, this is acceptable. We also tried Google reCAPTCHA, and that can also be bypassed. From a security perspective, I would say neither solution is completely secured. Regarding uptime, we have faced a couple of incidents due to Cloudflare in recent years, so I cannot say we receive 100% uptime for our region. We sometimes face challenges, including downtime and other issues. As a result, we are not receiving 100% uptime from Cloudflare's solution. Since most of our customers are in this region, we need alternatives. We need something more competitive than Cloudflare. Unfortunately, in Bangladesh, Cloudflare has three points of presence already, and we cannot find any other solution provider in Bangladesh as an alternative, which presents another challenge. Competitor solutions have more attack signatures, which ensure better security compared to Cloudflare's predefined configurations. Customers do not have options to modify any configuration parameters in Cloudflare, whereas other competitor solutions, such as F5 Distributed Cloud, allow customers to tune configurations according to their requirements. Cloudflare could improve in this area. Additionally, regarding visibility, Cloudflare has static visibility, but they could adopt dynamic graph features for their customers.

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Mohan Janarthanan

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.

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Justin Thomas

Manager Strategic Planning at Endurance International Group

Identifies a request that comes up multiple times, block holds that particular IP, and lets the genuine traffic pass through

Genuine traffic coming in is still getting better. While I understand that it's some sort of algorithm that is written in this scale, that algorithm can be a little bit better because sometimes while we are doing DDoS mitigation, genuine traffic does get blocked. While it is one of the greatest features it can still be improved. I would like to see a dashboard that shows you the data that is transferred from which end. It's where people start looking at abuse management. People keep questioning when the mitigation is on what service it is and how many GBs are passing through. An end user dashboard that will help you identify all of these questions and that can be visible in your entire organization is something that would make sense.

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Quotes from Members

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

Pros

"DDoS protection is this product’s most valuable feature."

"The technical support on offer is excellent; they are very helpful and responsive, and we are quite happy with the level of service they provide to their customers."

"Cloudflare offers CDN and DDoS protection. We have the front end, API, and database in how you structure applications."

"I like Cloudflare's application gateway and DDoS protection."

"The overall performance of this solution is what makes it one of the best solutions on the market."

"The solution automatically detects and responds to certain types of traffic based on geolocation."

"We're using dynamic components to build flexible pages to create and manage Git merge requests for code and reviews."

"The tool is user-friendly."

More Cloudflare pros

"I think F5 is one of the best web application firewalls in the world."

"The stability of the solution is very good."

"We have a lot of businesses that we put behind this solution, and it has really helped us in terms of monitoring the logs and incidents."

"If you are looking for web security and don't have any solution, just try it."

"It's a good front end for public infrastructure"

"The most valuable feature of F5 Silverline Managed Services is the benchmark performance."

"Its flexibility is the most valuable because it is a managed service. The good part is that you don't need to set it up. It just needs DNS routing, which is the easiest thing. Our client had Akamai for certain websites because they were using CDN features. They had NetScaler on the internal zone, F5 AWAFs on the data centers, and no WAF at all in the cloud. One of the main activities of the project was to move all these policies into a single WAF so that we could control and use that as a choke point. That exercise itself was very easy because it was a managed service and F5 Silverline Web Application Firewall does that for you. That's the best thing about F5 Silverline Web Application Firewall. It is easy to apply policies on-premises. If you have AWAF on-premises and you want to replicate some policies on F5 Silverline Web Application Firewall, other than the policies that it applies by itself, it is easy because you have a team that supports it. F5 Silverline Web Application Firewall works perfectly fine. It pretty much does everything that an Advanced WAF on-premises should do."

"My advice to others is this is a very reliable solution."

More F5 Silverline Managed Services pros

"In the DDoS it's difficult to validate what is a genuine request from an end user. We've started being able to do that with the logistics that they have set up. With the protection that they have provided, they are able to identify what is valid and what is not valid. We see that a person who is getting DDoS Neustar service is able to block that particular user. However, while they are doing that it doesn't affect other customers on the server."

"Scalability is awesome, and they have grown two folds or three folds since we started using them, with no concerns even as we protect close to 60,000 hosted sites for business and e-commerce customers."

Cons

"The pricing, setup cost, and licensing for Cloudflare are a bit on the higher side overall."

"Technical support is not well developed. While there are good engineers, Cloudflare does not offer hands-on technical support to fix customer problems but rather a self-service model."

"With CDN loads, sometimes we get an error that the host server is unavailable when the connection between CloudFlare and the server timed out."

"There could be more courses with engineers. I like e-learning, however, having a specialist in a classroom is more comfortable for me."

"There might be helpful if there was some web application firewall feature."

"In the last two years, there has been a certain amount of downtime when using the VDM."

"However, what I still fail to understand is that why aren't they offering domains themselves."

"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."

More Cloudflare cons

"The price of F5 Silverline Managed Services could be better, they are not very flexible."

"Improvements could include the creation of highly optimized profiles, optimization deployments, and compression profiles for better performance."

"One thing that was a hassle for us regarding F5 Silverline Managed Services was the deployment of this particular software."

"There is room for improvement in the stability of the solution."

"Sometimes tech support can be slow. They take more time assigning engineers to complex issues, however, they resolve the issues by joining me to fix them."

"F5 Silverline Managed Services can improve by reducing the price."

"F5 Silverline Web Application Firewall, being a new product in the market or comparatively related to a new product, currently supports less number of PoPs."

"The product could be improved on the global load and the integration with the other solution like Cisco and Dell. As a representor of the operation, we prefer to have one platform which can accommodate all type of integration. We are also looking for more improvements in the security policy configuration."

More F5 Silverline Managed Services cons

"Genuine traffic coming in is still getting better because sometimes while we are doing DDoS mitigation, genuine traffic does get blocked."

"I would like to see a dashboard that shows you the data that is transferred from which end. It's where people start looking at abuse management. People keep questioning when the mitigation is on what service it is and how many GBs are passing through. An end user dashboard that will help you identify all of these questions and that can be visible in your entire organization is something that would make sense."

Pricing and Cost Advice

"The pricing for the service is reasonable, neither excessively cheap nor prohibitively expensive. It aligns well with the value of their solution."

"So far I use free tier and happy with it. You can subscribe to business package if needed."

"That is one of the great features. I was able to access the majority of the features and services for free."

"The solution has many features but there are ones that you need to pay for. Sometimes you have to find out which is available for free and which you have to pay for."

"We don't have any issues with the price."

"I give the price a five out of ten."

"The solution is expensive when compared to other products but offers unlimited bandwidth."

"We are using the free version."

More Cloudflare pricing and cost advice

"The product’s pricing is reasonable."

"F5 Silverline Web Application Firewall works based on your bandwidth. They look at the clean bandwidth and do the pricing. 20% of a total pipe would be a clean bandwidth. The list price or a non-negotiated price for F5 Silverline Web Application Firewall would be around $2,200 per application per year for everything that you need. When you get into an enterprise kind of a setup, they negotiate this to the last bit. I would easily take 20% on that, which would be the cost, but it should cover all your Advance WAF features, bot protection, tech campaign, etc. It is built as a package and gives you most of the capability. You don't get the mobile SDK, which is an additional license. Mobile SDK is required only if you're buying or if you have a mobile application, and you are going to instrument F5 or Imperva into your mobile appliance. This anyways would be an additional module. It doesn't come within the WAF, but it is a WAF feature."

"The price of F5 Silverline Managed Services could be better, they are not very flexible. The price of the solution is based on the requirements of the enterprise."

"The price of F5 Silverline Managed Services could be reduced."

Information not available

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Top Industries

By visitors reading reviews

Financial Services Firm

10%

Comms Service Provider

10%

Computer Software Company

Manufacturing Company

Financial Services Firm

16%

Comms Service Provider

14%

Insurance Company

Construction Company

No data available

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	46
Midsize Enterprise	11
Large Enterprise	26

By reviewers
Company Size	Count
Small Business	9
Midsize Enterprise	2
Large Enterprise	11

No data available

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...

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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...

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What is your experience regarding pricing and costs for Cloudflare DNS?

The pricing, setup cost, and licensing for Cloudflare are a bit on the higher side overall.

See all answers

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...

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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.

See all answers

What needs improvement with F5 Silverline Managed Services?

One thing that was a hassle for us regarding F5 Silverline Managed Services was the deployment of this particular sof...

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Comparisons

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Compared 9% of the time

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Compared 8% of the time

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Compared 8% of the time

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Compared 6% of the time

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Compared 6% of the time

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Compared 27% of the time

F5 BIG-IP Advanced Firewall Manager (AFM) vs Neustar UltraDDoS [EOL]

Compared 20% of the time

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Product Reports

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Cloudflare

June 2026

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F5 Silverline Managed Services

June 2026

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Buyer's Guide

Distributed Denial-of-Service (DDoS) Protection

May 2026

Download Neustar UltraDDoS [EOL] product report

Also Known As

Cloudflare DNS

F5 Silverline Web Application Firewall, F5 Silverline DDoS Protection

Neustar UltraDDoS, UltraDDoS

Overview

Cloudflare enhances web performance and security with features like CDN caching and DDoS mitigation while providing easy DNS management and intuitive setup through its user-friendly dashboard.

Cloudflare is recognized for its comprehensive web security and performance solutions. Speed improvements are achieved through caching mechanisms and DDoS protection, combining ease of DNS management with flexible page rules. The robust analytics and threat insight tools provide valuable data, assisted by a user-friendly dashboard allowing quick setup and configuration. An API offers dynamic DNS settings ensuring low latency and high performance across the globe.

What are Cloudflare's key features?

CDN Caching: Enhances website speed through content delivery network caching.
Web Application Firewall: Protects websites from online threats.
DDoS Mitigation: Shields against distributed denial-of-service attacks.
DNS Management: Offers easy-to-use and flexible domain management.
SSL Certificates: Ensures secure connections between users and servers.
Analytics: Provides insights with robust analytics tools.

What benefits and ROI should users evaluate?

Enhanced Security: Strengthening web security with DDoS and firewall protection.
Speed Improvement: Faster content delivery with CDN caching.
Operational Simplicity: Simplifies website optimization through a user-friendly interface.
Scalable Solutions: Scales with global reach, lowering latency for improved performance.
Cost Efficiency: Offers layers of valuable functionality with pricing options.

Cloudflare finds utility across industries for DNS management and defense mechanisms. Its content delivery network assures fast content distribution and fortified security. Businesses integrate features like web application firewalls, load balancing, end-to-end SSL, and zero trust to protect websites from cyber threats while ensuring resilience and reliable performance.

Cloudflare

F5 Silverline Managed Services offers Local Traffic Management and Application Security Management, providing traffic monitoring, security, load balancing, and 24/7 threat mitigation. Its user-friendly interface enables centralized certificate management and policy application, enhancing overall security and managing DDoS protection.

F5 Silverline Managed Services delivers cloud-native functionality and real-time threat intelligence, streamlining threat response times and simplifying the setup process. While integration with Cisco and Dell EMC needs strengthening, the service effectively protects applications from DDoS attacks, SQL injection, and cross-site scripting. It supports on-premise systems integration for enhanced protection and compliance with government regulations. The need for improved reporting, a more intuitive interface, and better cost-efficiency are acknowledged for attracting more users. Expanding points of presence and adapting to data protection regulations can enhance compliance and latency reduction.

What are the key features of F5 Silverline Managed Services?

Local Traffic Management: Monitors and manages network traffic efficiently.
Application Security Management: Secures applications against threats including DDoS, SQL injection, and cross-site scripting.
24/7 Threat Mitigation: Offers real-time security threat response.
User-Friendly Interface: Simplifies centralized certificate management and policy application.
Real-Time Threat Intelligence: Enhances security measures through ongoing analysis.

What benefits or ROI can users expect to see?

Enhanced Security: Provides robust protection for internet-facing applications and cloud-hosted services.
Improved Compliance: Helps manage traffic to meet regulatory requirements.
Efficient Load Balancing: Optimizes application delivery, improving performance.
Streamlined Setup: Simplifies initial configuration, saving time and resources.

In industries such as finance, healthcare, and retail, F5 Silverline Managed Services is implemented as a Web Application Firewall to protect mission-critical applications from threats while ensuring compliance with regulations. It is particularly valued for securing cloud-hosted services and managing traffic to enhance application delivery and security policy management.

Neustar UltraDDoS [EOL] is an enterprise-level DDoS protection service designed to safeguard online operations by mitigating attack risks. It provides comprehensive security features that ensure continuous online availability.

Neustar UltraDDoS [EOL] has been valued for its robust ability to protect against distributed denial-of-service attacks. It offers scalability and effective traffic analysis to detect potential threats swiftly. The system can be enhanced by addressing needs for customization and seamless integration with existing IT infrastructure. Despite being end-of-life, it set a standard for DDoS protection through proactive monitoring and advanced threat detection technologies.

What are the most important features of Neustar UltraDDoS [EOL]?

Advanced Traffic Analysis: Identifies and mitigates threats in real-time.
Scalability: Protects networks of all sizes from large-scale attacks.
Proactive Monitoring: Continuously scans for vulnerabilities and potential threats.

Which benefits and ROI should users look for in reviews?

Reduced Downtime: Ensures constant access to services during attacks.
Cost Efficiency: Limits financial losses by maintaining operations.
Enhanced Security: Provides peace of mind with comprehensive threat management.

In industries like finance and e-commerce, Neustar UltraDDoS [EOL] was crucial for maintaining transaction integrity and service reliability. It provided peace of mind to businesses by ensuring network stability, allowing them to focus on growth without disruption concerns.

TransUnion

Sample Customers

Trusted by over 9,000,000 Internet Applications and APIs, including Nasdaq, Zendesk, Crunchbase, Steve Madden, OkCupid, Cisco, Quizlet, Discord and more.

City Bank, Ricacorp Properties, Miele, American Systems, Bangladesh Post Office

Choxi

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May 2026

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