Arbor DDoS vs Neustar UltraDDoS [EOL] comparison

NETSCOUT and TransUnion are both solutions in the Distributed Denial-of-Service (DDoS) Protection category. Additionally, 95% of NETSCOUT 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 Arbor DDoS compete in the DDoS mitigation category. Arbor DDoS appears to have the upper hand due to its superior feature offerings which deliver comprehensive protection and better long-term ROI.

Features: Neustar UltraDDoS EOL offers efficient traffic monitoring, swift threat detection, and reliable support. Arbor DDoS provides advanced analytics, customizable security solutions, and extensive feature sets for comprehensive protection. The flexibility and depth of security offered by Arbor highlight a significant feature differentiation.

Ease of Deployment and Customer Service: Neustar UltraDDoS EOL is recognized for simple deployment coupled with strong customer service that ensures smooth operation. Arbor DDoS has a more complex deployment process but provides detailed guidance and dedicated support to manage setup intricacies effectively.

Pricing and ROI: Neustar UltraDDoS EOL is a cost-effective solution with satisfactory ROI due to low initial setup costs. Arbor DDoS requires higher upfront investment but offers greater ROI over time through its extensive features.

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

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Distributed Denial-of-Service (DDoS) Protection

August 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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reviewer1331304

Director Of Research And Development at a comms service provider with 11-50 employees

Automated threat intelligence and flow-based mitigation have improved our DDoS defense

A very useful feature in Arbor DDoS is its ability to send flow spec announcements to routers. For example, if it is clear that a Layer 3 or Layer 4 attack is occurring and the attack pattern is identified through source and destination IP addresses and ports, you can generate flow spec filters. These filters are transferred through BGP to border routers, which automatically build filters, mitigating the attack even at the network's boundary and preventing it from reaching the TMS. This allows the TMS to focus on other tasks. This is a highly effective feature that can mitigate huge volumetric attacks; for example, we experienced a 32-gigabit attack, and all those 32 gigabits were dropped by our border routers, not by Arbor DDoS itself. The flow spec announcement was generated by Arbor DDoS, and as far as I know, the same technology is used by Radware, but it comes under a different feature and a different license. At the time, we were told that flow spec mitigation was an additional very expensive license to purchase from Radware, while Radware included everything in one package.

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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

"Cloudflare is very straightforward."

"Stability is great; I love their mechanisms, I love their GUI, I love their front end, I love their behind the scenes, algorithms and everything, it all makes sense."

"The DDoS protection is the most valuable aspect of the solution."

"Smaller businesses have seen great ROI due to the low investment and strong performance."

"Cloudflare makes it easier for me to handle and set up DNS for multiple users and multiple clients, and basically go in and access their account, make the changes they need, and it's a one-stop shop."

"Its most significant benefit to date is the speed with which it refreshes DNS records on the internet once you change it. If you are changing a website or registering a new record, it is very quick."

"Cloudflare has many features."

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

More Cloudflare pros

"It prevents all unwanted or malicious traffic, using the Threat Intelligence feeds."

"In the GUI, the packet capture is a very good option, as is the option to block an IP address."

"The Arbor Networks SP device provided great visualization of the network traffic."

"Don't worry that it is complex because, out-of-the-box, it protects you from the basics."

"Analytics and its attack mitigation capabilities are valuable features of the solution."

"I like all the features together as a whole."

"It improves our organization by preventing attacks and improving the availability of the network on services, which provides a better service to customers."

"When there was an attack, the attack was contained only on the IPs under attack, the rest of the network was not impacted, and that is the most important part."

More Arbor DDoS 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

"The documentation could improve for Cloudflare DNS."

"At the end, it is worth than giving your house keys to the NSA."

"The one feature that is paid is the custom nameservers instead of using the default ones, I want to use a custom one."

"The integration of LLMs on the dashboard is something that is needed in the tool."

"They lack a good way to manage DNS as a company, since everything is relegated to single account logins until you get to the higher levels. They have come out with a paid feature to remedy this, but I have not had a chance to fully review it yet to know if it fixes the access problem."

"Latencies are always a problem."

"If they improve on the placement of their data centers, it would be better. I'm living in a remote area. I would like to connect to them without any kind of lag."

"The Always Online feature has room for improvement. It seems to work sometimes and not others even with the pro version."

More Cloudflare cons

"In the default filter mode, there could be an impact on a customer’s link."

"The product could have end-to-end platform visibility."

"Arbor's SSL decryption is confusing and needs external cards to be installed in the devices. This is not the best solution from an architectural point of view for protecting HTTPS and every other protocol that is SSL encrypted."

"Sometimes it blocks legitimate traffic. If a legitimate user is trying to access the server continuously, the product suspects that this is a DoS traffic file. That is a case where it needs to improve. It needs machine-learning."

"If we want to see live traffic, we can see do so. But once an attack that lasts for five minutes is done, the data is no longer there. It would be an improvement if we could see recent traffic in the dashboard. We can check and download live traffic, but a past attack, with all the details, such as why it happened and how to mitigate and prevent such future attacks, would be helpful to see."

"The implementation should be made easier."

"This is a disadvantage of Arbor DDoS, as it operates merely as a flow collector, generating alerts only after a violation occurs."

"On the application layer, they could have a better distributed traffic flow. They could improve that a bit. For network data it is very effective, but the application layer can be improved."

More Arbor DDoS cons

"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."

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

Pricing and Cost Advice

"The price of the solution is expensive."

"A free version of the solution is available."

"The product's pricing is cheap."

"I believe their performance has improved, but I'd like to refrain from discussing the pricing aspect related to the cloud. The pricing, in my opinion, could be simplified, and I think they should consider reevaluating the pricing for support, as it can be quite high. At times, this cost can make it challenging to choose CARFAGuard or opt for the support."

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

"For Cloudflare, I recommend it heavily for small businesses with revenue under a couple of million dollars. Onboarding is easy, and they even have a free plan. This makes it simple for businesses in the $100,000-$500,000 range to try it out and see its value, allowing them to scale up their infrastructure as needed."

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

"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."

More Cloudflare pricing and cost advice

"The solution is a bit costly if you're a small organization, but I think it's worth the price that they are charging."

"I don't know about the pricing details as our company's service provider offers us the solution as an inbuilt feature within the internet bandwidth they provide us."

"I don't deal with the pricing, but it seems that you need to get basic support in order to upgrade the software and implement some patches."

"Arbor is striking a good balance between pricing and what they deliver."

"There is room for improvement with the pricing. It is an expensive solution. The issue with the pricing is more the way it is built. Right now we're paying per router, and there's a limitation there. I would like to see bundle-pricing where there is an overall solution cost."

"I'm a technical guy. But I know it's expensive compared to its competitors. After you have the on-premise solution, for your solution to be effective you have to subscribe to an "upper level," so there's another cost. There is also a subscription to cloud services, which is another cost."

"Our customers always complain about the price of the product."

"Because the solutions from competitors are very different, it's not easy to compare. However, the licensing from Arbor is clear and understandable and the pricing is reasonable when looking at the market, in general."

More Arbor DDoS pricing and cost advice

Information not available

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Top Industries

By visitors reading reviews

Comms Service Provider

10%

Financial Services Firm

10%

Manufacturing Company

Computer Software Company

Financial Services Firm

15%

Comms Service Provider

13%

Outsourcing Company

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	26
Midsize Enterprise	14
Large Enterprise	29

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.

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Which is the best DDoS protection solution for a big ISP for monitoring and mitigating?

I would say if it’s an ISP that will build a scrubbing center, Netscout/Arbor is a good solution. In all other soluti...

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Which is the best DDoS protection solution for a big ISP for monitoring and mitigating?

Arbor would be the best bid, apart from Arbor, Palo Alto and Fortinet have good solutions. As this is an ISP, I would...

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What is your experience regarding pricing and costs for Arbor DDoS?

The prices for Arbor DDoS are expensive. The licensing is subscription-based. From our sales department, they discuss...

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Product Reports

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Cloudflare

August 2026

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Arbor DDoS

August 2026

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Distributed Denial-of-Service (DDoS) Protection

August 2026

Download Neustar UltraDDoS [EOL] product report

Also Known As

Cloudflare DNS

Arbor Networks SP, Arbor Networks TMS, Arbor Cloud for ENT

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

Arbor DDoS offers a comprehensive defense system against DDoS attacks, integrating a user-friendly GUI and advanced threat mitigation technologies for enhanced network protection.

Arbor DDoS is recognized for its ability to manage high-volume DDoS attacks efficiently, providing extensive protection through real-time traffic analysis and automated threat detection. It utilizes advanced techniques such as blackhole and BGP Flowspec for effective threat management. Arbor's cloud signaling allows users to handle and mitigate volumetric attacks while maintaining service availability. Though it provides robust security features, users note potential improvements in auto-mitigation, scalability, and AI integration. Challenges like an outdated graphical interface, hardware stability, and false positives need addressing to further enhance its usability and integration with third-party systems.

What are the key features of Arbor DDoS?

User-Friendly GUI: Provides an intuitive interface for ease of use.
Effective Mitigation: Combats high-volume DDoS attacks effectively.
Predefined Filters: Simplifies threat management with pre-configured settings.
Real-Time Traffic Analysis: Offers insights into traffic patterns and potential threats.
Automated Threat Detection: Identifies and mitigates threats without manual intervention.
Able to Handle High-Volume Attacks: Ensures extensive protection even under large-scale attacks.
Packet Capture and Integration: Facilitates comprehensive security analysis.
Cloud Signaling: Enhances attack traffic management through hybrid deployments.

What benefits should users expect from Arbor DDoS?

Enhanced Protection: Safeguards networks from diverse DDoS threats.
Improved Service Availability: Maintains business operations without disruptions.
Timely Reporting: Delivers detailed attack reports for proactive prevention.
AI Capabilities: Leverages AI for smarter threat mitigation strategies.
Comprehensive Security: Combines on-premise and cloud deployments for optimal defense.

Internet service providers and telecom companies commonly adopt Arbor DDoS to protect their networks and infrastructure from DDoS attacks. It is also implemented in financial and government sectors to ensure web application security and maintain high availability. Arbor DDoS supports a hybrid approach, utilizing both on-premise and cloud solutions to manage traffic efficiently and sustain service quality during attacks.

NETSCOUT

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.

Xtel Communications

Choxi

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Distributed Denial-of-Service (DDoS) Protection

August 2026

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