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Kemp LoadMaster vs NETSCOUT Arbor DDoS Protection & Mitigation comparison

Why PeerSpot?
 

Comparison Buyer's Guide

Executive SummaryUpdated on Oct 12, 2026

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
7.4
Kemp LoadMaster is a cost-effective solution that enhances efficiency, security, and offers significant returns quickly in various industries.
Sentiment score
6.3
NETSCOUT Arbor DDoS Protection ensures uptime, prevents costly attacks, protects reputation, and provides financial gains through efficient operations.
 

Customer Service

Sentiment score
8.8
Kemp LoadMaster support is highly rated for its knowledgeable, efficient team offering quick issue resolution and comprehensive online resources.
Sentiment score
7.6
NETSCOUT Arbor is praised for expertise and quick resolution, but regional delays and first-level support issues exist.
We have not received technical support from Kemp LoadMaster without a license.
Information Security Engineer at BOK
The technical support team is very effective in resolving issues.
Network Engineer at A1 Bulgaria
Although the team is good, they are not fast, and they lack the skills to manage dynamic attackers.
Gerente De Ventas at internet winds ag
Support for Arbor DDoS deserves a rating of 10 because when there is a problem with implementation, the people I work with are the best.
Team Lead Network Engineer at Artco Group d.o.o Sarajevo
 

Scalability Issues

Sentiment score
8.2
Kemp LoadMaster is highly scalable, supporting smooth upgrades and adaptable licensing for both small and large enterprises.
Sentiment score
7.3
NETSCOUT Arbor DDoS Protection is scalable and adaptable, effectively mitigating attacks with flexible deployment for various environments.
Kemp LoadMaster is a scalable solution.
Information Security Engineer at BOK
This would enhance the knowledge about scalability options available for Arbor DDoS, making it more accessible and useful for users.
System Engineer at TIGER LOGIC
They need to purchase boxes monthly to expand their bandwidths, and these new boxes can be added to the installed base very easily.
System Engineer - Security Presales at Raya Integration
I find Arbor DDoS to be very scalable.
Network Engineer at A1 Bulgaria
 

Stability Issues

Sentiment score
8.7
Kemp LoadMaster is praised for its stability, reliability, high availability, and effective server load management with minimal downtime.
Sentiment score
8.3
NETSCOUT Arbor DDoS Protection is highly stable and effective, with minimal issues and infrequent updates needed for optimal performance.
With the license purchase afterwards, if it expires, it begins dropping the HTTP traffic, also the DNS traffic.
Information Security Engineer at BOK
It is a very stable product.
Team Lead Network Engineer at Artco Group d.o.o Sarajevo
Arbor DDoS is very stable.
System Engineer - Security Presales at Raya Integration
 

Room For Improvement

Kemp LoadMaster needs UI, security, documentation enhancements, improved monitoring, automation, analytics, and better cloud integration.
NETSCOUT Arbor DDoS Protection needs improvements in troubleshooting, integration, pricing, support, reporting, stability, and management flexibility using AI features.
After that, they said if it was good, we could purchase the license, and while we found it very good, the license cost was too high.
Information Security Engineer at BOK
I would like to see an option to decrypt the traffic with Arbor DDoS, as some clients are interested in this, particularly for application layer attacks on port 443.
Network Engineer at A1 Bulgaria
Enhancing the handshakes between Arbor DDoS and third-party solutions is essential for obtaining better and real-time data that supports any organization’s support team effectively.
System Engineer at TIGER LOGIC
I would like to see a roadmap for one or two years, and it is tough to predict what will happen in that timeframe without a clearer description.
CTO at UkrNet
 

Setup Cost

Kemp LoadMaster offers flexible, cost-effective licensing and setup with positive user feedback and a 30-day free trial.
NETSCOUT Arbor's DDoS solution is costly, with complex licensing impacting affordability, especially for smaller enterprises.
The prices for Arbor DDoS are expensive.
Team Lead Network Engineer at Artco Group d.o.o Sarajevo
For some customers, the cost is expensive, but for enterprises looking to protect their services, it is affordable.
Network Engineer at A1 Bulgaria
 

Valuable Features

Kemp LoadMaster offers ease of use, security features, Azure integration, and cost-effective load balancing for Microsoft applications.
NETSCOUT Arbor offers scalable DDoS protection with user-friendly features, AI-enhanced detection, and cloud integration, ideal for effective threat mitigation.
We had some issues in patching management, so we deployed this product for virtual patching, the IPS rule, and it gives us very good results because we have very critical servers.
Information Security Engineer at BOK
That is an attack over 10 gigabit per second, and if an attack enters the telecommunication network, that will be a disaster for their customer, their services, and so on.
Team Lead Network Engineer at Artco Group d.o.o Sarajevo
We have many updates for the library of different attacks, and they have artificial intelligence that automatically learns the process during different attacks.
CTO at UkrNet
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.
Director Of Research And Development at a comms service provider with 11-50 employees
 

Categories and Ranking

Kemp LoadMaster
Ranking in Distributed Denial-of-Service (DDoS) Protection
17th
Average Rating
9.4
Reviews Sentiment
7.7
Number of Reviews
50
Ranking in other categories
Application Delivery Controllers (ADC) (12th), Web Application Firewall (WAF) (27th)
NETSCOUT Arbor DDoS Protect...
Ranking in Distributed Denial-of-Service (DDoS) Protection
4th
Average Rating
8.8
Reviews Sentiment
6.9
Number of Reviews
57
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of October 2026, in the Distributed Denial-of-Service (DDoS) Protection category, the mindshare of Kemp LoadMaster is 1.3%, up from 1.2% compared to the previous year. The mindshare of NETSCOUT Arbor DDoS Protection & Mitigation is 5.5%, down from 11.4% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Distributed Denial-of-Service (DDoS) Protection Mindshare Distribution
ProductMindshare (%)
Arbor DDoS5.5%
Kemp LoadMaster1.3%
Other93.2%
Distributed Denial-of-Service (DDoS) Protection
 

Featured Reviews

IshtiaqKhalil - PeerSpot reviewer
Information Security Engineer at BOK
Displays flexible, user-friendly interface with minor licensing challenges
The product could be improved with a more intuitive interface for complex configurations and more advanced analytics. Additionally, enhanced security features, like a more robust Web Application Firewall, and stronger APIs for better automation would be beneficial. Overall, the main areas for improvement are in strengthening the advanced features to better meet the demands of large-scale enterprise environments. key features for the next release should focus on three areas. First, an enhanced, next-generation security suite with a more powerful Web Application Firewall (WAF) and integrated bot protection. Second, more advanced and customizable analytics dashboards to provide deeper insights into application performance. Finally, greater support for modern, cloud-native environments, including better APIs for automation and seamless hybrid-cloud traffic management
reviewer1331304 - PeerSpot reviewer
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.
report
Use our free recommendation engine to learn which Distributed Denial-of-Service (DDoS) Protection solutions are best for your needs.
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Top Industries

By visitors reading reviews
Outsourcing Company
13%
Manufacturing Company
9%
Financial Services Firm
9%
Construction Company
9%
Financial Services Firm
16%
Outsourcing Company
11%
Comms Service Provider
8%
Construction Company
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business24
Midsize Enterprise13
Large Enterprise16
By reviewers
Company SizeCount
Small Business26
Midsize Enterprise14
Large Enterprise29
 

Questions from the Community

What is your experience regarding pricing and costs for Kemp LoadMaster?
My primary advice is to carefully analyze your total cost of ownership (TCO) rather than just the initial purchase price. Kemp LoadMaster is highly competitive on price and often provides a much be...
What needs improvement with Kemp LoadMaster?
The product could be improved with a more intuitive interface for complex configurations and more advanced analytics. Additionally, enhanced security features, like a more robust Web Application Fi...
What is your primary use case for Kemp LoadMaster?
Our primary use case was traffic load balancing and distribution. The solution was essential for managing all inbound client traffic, including HTTPS and DNS requests, by routing it through our fir...
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 solutions, Imperva is a great choice.
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 prefer Arbor.
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 that prices are very high.
 

Also Known As

LoadMaster Load Balancer
Arbor Networks SP, Arbor Networks TMS, Arbor Cloud for ENT
 

Overview

 

Sample Customers

Kent County Council, KEMP, SMA Solar Technology AG, RT€ Player , Victrix (Quebec, Canada), Texas A&M, Macmillan Cancer Support, Cisco, Austin Bank
Xtel Communications
Find out what your peers are saying about Kemp LoadMaster vs. NETSCOUT Arbor DDoS Protection & Mitigation and other solutions. Updated: September 2026.
918,970 professionals have used our research since 2012.