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.

Comparison Buyer's Guide

Download the report

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: April 2026).

Buyer's Guide

Distributed Denial-of-Service (DDoS) Protection

April 2026

Download the complete report

Helped 891,869 peers since 2012

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.

Read full review

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.

Read full review

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.

Read full review

Quotes from Members

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

Pros

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

"There are key things that are used for our enterprise customers, such as Lambda and DNS."

"The most valuable feature of the solution is external DNS. It is also very secure. They have their own main server and once you configure it, the product takes care of everything. There are no issues in resolving IPs and low latency is also present."

"We're partners with Cloudflare; this solution is the best product and it does not charge you for any kind of attack on your traffic, only for good traffic, and it can mitigate up to 30 TBPS of DDoS attacks."

"I have not had a DDOS attack since, or at least not become unavailable due to DDOS which means my ROI is pretty good."

"The solution is a great fit for customers who want unlimited bandwidth."

"Their free account offers an awful lot of functionality and savings alone, before you get on to the minimal $20 a month for a Pro account which comes with its own great list of features."

"Generally, I am satisfied with this product."

More Cloudflare pros

"F5 Silverline Web Application Firewall works perfectly fine; it pretty much does everything that an Advanced WAF on-premises should do."

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

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

"F5 Silverline takes fewer resources to operate."

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

"The initial setup is straightforward."

"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."

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

More F5 Silverline Managed Services pros

"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."

"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."

Cons

"It should confirm audit findings of the assigned area with auditees to ensure that the audit conclusions are based on an accurate understanding of the issues."

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

"More insight into analytics and threats would be a good place to start improving Cloudflare."

"I believe they currently have this feature, but there will most likely be integration with APIs so we can control some features through API."

"Even if I wanted to, I wouldn't be able to buy Cloudflare in my country."

"I think the APIs are a little bit hard for us to work with. The APIs could be more open so that we could integrate better with our SolarWinds or our monitoring solution."

"It would be good if Cloudflare could have more servers for better traffic routing or an increase in the traffic routed. This is what I'd like to improve in Cloudflare."

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

More Cloudflare cons

"We need to have support for cloud protection, which is not offered by this solution."

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

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

"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."

"Regarding return on investment with F5 Silverline Managed Services, I would say only ten to fifteen percent, not more than that."

"The price is high in comparison to other products."

"You need to have Linux knowledge in order to use the shell."

"There is a lot of room for improvement with their tech support."

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

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

"The product's pricing is cheap."

"There are no additional costs beyond the standard licensing fees."

"The product's pricing is minimal compared to other products."

"The price is reasonable."

"We are using the free version."

"The cost primarily depends on the size of the organization."

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

More Cloudflare pricing and cost advice

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

"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 product’s pricing is reasonable."

"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."

Information not available

See which vendors are best for you

Use our free recommendation engine to learn which Distributed Denial-of-Service (DDoS) Protection solutions are best for your needs.

See recommendations

891,869 professionals have used our research since 2012.

Top Industries

By visitors reading reviews

Financial Services Firm

10%

Comms Service Provider

10%

Computer Software Company

Manufacturing Company

Financial Services Firm

18%

Comms Service Provider

14%

Insurance Company

10%

Computer Software 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	6
Midsize Enterprise	3
Large Enterprise	9

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...

See all answers

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...

See all answers

What is your experience regarding pricing and costs for Cloudflare?

The tool's pricing is moderate. I rate the product’s pricing a five out of ten, where one is cheap, and ten is expens...

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...

See all answers

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?

In terms of areas for improvement, I would say that one scenario is that F5 Silverline Managed Services needs to adap...

See all answers

Ask a question

Earn 20 points

Comparisons

Quad9 vs Cloudflare

Compared 40% of the time

Akamai vs Cloudflare

Compared 4% of the time

Imperva Application Security Platform vs Cloudflare

Compared 3% of the time

Azure Front Door vs Cloudflare

Compared 2% of the time

Fastly vs Cloudflare

Compared 2% of the time

More Cloudflare Competitors

F5 Distributed Cloud Services vs F5 Silverline Managed Services

Compared 10% of the time

Imperva Application Security Platform vs F5 Silverline Managed Services

Compared 9% of the time

Arbor DDoS vs F5 Silverline Managed Services

Compared 6% of the time

NSFOCUS Web Application Firewall vs F5 Silverline Managed Services

Compared 6% of the time

Akamai App and API Protector vs F5 Silverline Managed Services

Compared 5% of the time

More F5 Silverline Managed Services Competitors

Akamai App and API Protector vs Neustar UltraDDoS [EOL]

Compared 28% of the time

More Neustar UltraDDoS [EOL] Competitors

Product Reports

Buyer's Guide

Cloudflare

April 2026

Download Cloudflare product report

Buyer's Guide

F5 Silverline Managed Services

April 2026

Download F5 Silverline Managed Services product report

Buyer's Guide

Distributed Denial-of-Service (DDoS) Protection

April 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

Buyer's Guide

Distributed Denial-of-Service (DDoS) Protection

April 2026

Download Free Report

Find out what your peers are saying about Radware, NETSCOUT, Cloudflare and others in Distributed Denial-of-Service (DDoS) Protection. Updated: April 2026.

DOWNLOAD NOW

891,869 professionals have used our research since 2012.

See our list of best Distributed Denial-of-Service (DDoS) Protection vendors.

We monitor all Distributed Denial-of-Service (DDoS) Protection reviews to prevent fraudulent reviews and keep review quality high. We do not post reviews by company employees or direct competitors. We validate each review for authenticity via cross-reference with LinkedIn, and personal follow-up with the reviewer when necessary.