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Fortinet FortiDDoS vs NETSCOUT Arbor DDoS Protection & Mitigation comparison

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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:
 

Categories and Ranking

Fortinet FortiDDoS
Ranking in Distributed Denial-of-Service (DDoS) Protection
15th
Average Rating
8.2
Reviews Sentiment
6.9
Number of Reviews
15
Ranking in other categories
No ranking in other categories
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 Fortinet FortiDDoS is 2.0%, down from 2.5% 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%
Fortinet FortiDDoS2.0%
Other92.5%
Distributed Denial-of-Service (DDoS) Protection
 

Featured Reviews

MO
IT Analyst at Evapco, Inc.
Reliable protection and smooth setup enhance company security
Currently, I have two firewalls, with one located in Sorocaba, model 90D, and the other in São Paulo, model 30D. They are connected by VPN. I use the firewalls for VPN and final protection for my company, and my equipment is maintained by an internet company called Multiprox The equipment works…
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.

Quotes from Members

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

Pros

"The protection resources and the support are valuable features of the solution."
"Among its key features: Detects and mitigates DDoS attacks at L3 to L7; negligible to zero false-positives; Generates and sends reports without the need for an expensive third-party solution."
"The most valuable feature is the cloud DDoS scrubbing capability."
"It allows me to see all the traffic on my network."
"Packet inspection has been effective for mitigating DDoS attacks."
"Compared to other DDoS mitigation solutions with similar deployment, FortiDDoS does not require a 24x7 NOC and has lower TCO."
"I find this product the best on-premises (in-line) DDoS mitigation solution that suits my current and future requirements."
"We've been completely satisfied with the product."
"The technical support of Arbor DDoS is good."
"The analytics part of Arbor DDoS is great, and we are satisfied with the reporting and analytics part, especially the new version."
"They have done a considerable amount of development in the last few years when it comes to features."
"Our customers are very happy when we provide them with the interface... They can check how many attacks they have faced and how many attacks have been blocked."
"It's very user-friendly."
"Inside this product, there are many different configurations for protection, and we have one of the best experiences with it, specifically with the Atlas product."
"The feature I find most valuable is the packet capture, which beautifully shows the communication between the client and the server, identifying potential malicious activity."
"Arbor's technical support is very good, we've had no issues with it."
 

Cons

"The challenge lies within the customer environment, particularly in Brazil, where companies have stringent security requirements for implementing solutions."
"All those thresholds that need to be configured should be included in the default so that user will not forget or misconfigure."
"The solution can be a little more user-friendly and it can be more affordable."
"I find that there have been issues in the past year with the solution hanging. It freezes often."
"The tool needs to focus more on the area of application traffic management, where it currently has some shortcomings."
"The web interface could be much better."
"The product’s pricing needs improvement."
"There aren't really any aspects of the solution we are unhappy with. It's been a positive experience overall."
"The upgrade process is mildly complex requiring treatment of the custom embedded OS separately from the application. The correlation of the underling OS to the application version can be easily missed."
"In the default filter mode, there could be an impact on a customer’s link."
"Arbor's products are very expensive. Their competitors are cheap when compared with Arbor."
"Their RESTful API is still a work-in-progress."
"Auto mitigation is a feature provided when DDoS is observed on any of link/customer (configured under auto mitigation). It automatically starts mitigation with default filters; in default filter mode, there could be an impact on the customer’s link, e.g., if we have enabled monitoring of internal traffic for that link/customer, it starts mitigation on legitimate traffic."
"For troubleshooting problems, it's not so intuitive. It's not straightforward. This is the core of their kernel, so they need to improve it a little bit... In F5 I have full control of everything."
"There are some price issues with scalability, but technically speaking, the solution is fully scalable."
"I think Arbor DDoS needs improvement in areas where competitors like S5, Redver, or NETSCOUT offer web application firewall functionality or dedicated web application firewall devices. Arbor lacks these features, which is a significant disadvantage. Yes, I would like to see these features introduced in Arbor as well. Regarding real-time detection capabilities, Arbor DDoS works very well. We and our customers are very satisfied with its performance. However, it would benefit from adding Web Application Firewall (WAF) capabilities to reach a larger customer base."
 

Pricing and Cost Advice

"The solution is reasonably priced."
"It's quite pricey."
"The product’s pricing needs improvement."
"It is an expensive product. I use this product for its different features."
"Arbor is striking a good balance between pricing and what they deliver."
"Start with a small license. Measure your bandwidth requirements."
"Arbor DDoS is quite expensive, but all these solutions are expensive because they deal with confidential information."
"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."
"The solution's pricing is based on a licensing model that is expensive when compared to other tools."
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Top Industries

By visitors reading reviews
Comms Service Provider
12%
Financial Services Firm
11%
Government
8%
Manufacturing Company
7%
Financial Services Firm
16%
Outsourcing Company
11%
Comms Service Provider
8%
Construction Company
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business10
Large Enterprise6
By reviewers
Company SizeCount
Small Business26
Midsize Enterprise14
Large Enterprise29
 

Questions from the Community

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 Fortinet FortiDDoS?
Fortinet FortiDDoS offers lower costs compared to other solutions. The licensing costs are annually renewed.
What needs improvement with Fortinet FortiDDoS?
There is a need for more features that protect personal information, especially given the PDP issue in Indonesia.
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.
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.
What needs improvement with Arbor DDoS?
I do not have a direct response regarding improvements for Arbor DDoS. Regarding areas for improvement in security, the only thing that comes to mind is that previously Arbor DDoS had many fingerpr...
 

Also Known As

Fortinet DDoS, FortiDDos
Arbor Networks SP, Arbor Networks TMS, Arbor Cloud for ENT
 

Overview

 

Sample Customers

Black Gold Regional Schools, Amadeus Hospitality, Jefferson County, Chunghwa Telecom, City of Boroondara, Dimension Data
Xtel Communications
Find out what your peers are saying about Fortinet FortiDDoS vs. NETSCOUT Arbor DDoS Protection & Mitigation and other solutions. Updated: September 2026.
916,240 professionals have used our research since 2012.