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F5 Silverline Managed Services vs Fortinet FortiDDoS comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Dec 5, 2024

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

F5 Silverline Managed Services
Ranking in Distributed Denial-of-Service (DDoS) Protection
5th
Average Rating
8.2
Reviews Sentiment
6.6
Number of Reviews
21
Ranking in other categories
Web Application Firewall (WAF) (14th)
Fortinet FortiDDoS
Ranking in Distributed Denial-of-Service (DDoS) Protection
14th
Average Rating
8.2
Reviews Sentiment
6.9
Number of Reviews
15
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of November 2026, in the Distributed Denial-of-Service (DDoS) Protection category, the mindshare of F5 Silverline Managed Services is 3.0%, up from 1.5% compared to the previous year. The mindshare of Fortinet FortiDDoS is 2.1%, down from 2.5% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Distributed Denial-of-Service (DDoS) Protection Mindshare Distribution
ProductMindshare (%)
F5 Silverline Managed Services3.0%
Fortinet FortiDDoS2.1%
Other94.9%
Distributed Denial-of-Service (DDoS) Protection
 

Featured Reviews

Sanchit Makkar - PeerSpot reviewer
Dns architect at a outsourcing company with 5,001-10,000 employees
Robust protection has secured global web assets and keeps critical applications available
F5 Silverline Managed Services can be improved in areas with complex onboarding processes and slow deployment settings. Tuning of policy requires significant technical expertise, and there is a lack of knowledge in the F5 world where one needs to go through a steep learning curve in understanding what and how the policy should be configured for effectively protecting an application. These processes need to be streamlined.Knowing the limitations of F5 Silverline Managed Services, F5 has come out with a new product called F5 distributed cloud WAF platform, which has a better API integrated with security modules. It also offers advanced auto discovery, swagger, and open API validation, which is much better than Silverline.
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…

Quotes from Members

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

Pros

"F5 Silverline Managed Services has positively impacted our organization by helping us protect our public assets and providing global scalability for our web hosting for our end users."
"The best feature F5 Silverline Managed Services offers is 24/7 SOC co-management, which has drastically helped us during major DDoS attempts or web scraping incidents by handling the triage and mitigation entirely and reducing our MTTR from many hours to a couple of hours or minutes."
"F5 Silverline Managed Services is recognized as one of the best solutions in Gartner for WAF; I believe it can effectively manage vast amounts of traffic better than other brands like Citrix or FortiGate's WAF solution."
"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 initial setup is very straightforward."
"The most valuable feature of F5 Silverline Managed Services is it becomes similar to a distributed architecture."
"I think F5 is one of the best web application firewalls in the world."
"The most valuable features are the configuration and configuring the process."
"The solution is very user-friendly and very easy to use."
"The product's initial setup phase was really easy."
"It is a user-friendly product in terms of monitoring and updating policies."
"The equipment works very well, and I have not encountered any issues with it. It is a good solution for my company."
"It allows me to see all the traffic on my network."
"The product allows the users to adjust the thresholds."
"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."
 

Cons

"The product could be improved on the global load and the integration with other solutions like Cisco and Dell EMC."
"To make this solution much better, they must have a user-friendly configuration interface."
"In terms of the scalability, this part is always so confusing because they are checking for packet count. Also, after an attack, they said that the throughput must be from gigabits but then I check my bandwidth and it is already done in gigabits. So it is a little bit confusing."
"We have complaints about the reliability of this solution."
"I just hope the price can be cheaper."
"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."
"The navigation is difficult to use."
"You need to have Linux knowledge in order to use the shell."
"Technical support isn't too good with Fortinet. They could be more responsive and helpful overall."
"The only thing they need to do is to automate it. Today, you must create tools that do not require the use of an expert or anyone with special skills."
"The primary area for improvement is the on-premises capacity limit, currently fixed at 10 GB."
"The tool needs to focus more on the area of application traffic management, where it currently has some shortcomings."
"Alerts and reporting features must be improved."
"Earlier versions of firmware had bugs that limit my options."
"The web interface could be much better."
"I would like to see analytics, big data."
 

Pricing and Cost Advice

"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."
"The product’s pricing is reasonable."
"The solution is reasonably priced."
"It's quite pricey."
"The product’s pricing needs improvement."
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Top Industries

By visitors reading reviews
Financial Services Firm
14%
Outsourcing Company
10%
Construction Company
9%
Comms Service Provider
8%
Comms Service Provider
13%
Financial Services Firm
11%
Government
7%
Manufacturing Company
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business9
Midsize Enterprise2
Large Enterprise13
By reviewers
Company SizeCount
Small Business10
Large Enterprise6
 

Questions from the Community

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 have to look for other ADC's like F5, Imperva, Radware, Fortinet, etc.
What is your experience regarding pricing and costs for F5 Silverline Managed Services?
I was not involved in any discussions regarding pricing, setup costs, and licensing for F5 Silverline Managed Services.
What needs improvement with F5 Silverline Managed Services?
F5 Silverline Managed Services can be improved in areas with complex onboarding processes and slow deployment settings. Tuning of policy requires significant technical expertise, and there is a lac...
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.
 

Also Known As

F5 Silverline Web Application Firewall, F5 Silverline DDoS Protection
Fortinet DDoS, FortiDDos
 

Overview

 

Sample Customers

City Bank, Ricacorp Properties, Miele, American Systems, Bangladesh Post Office
Black Gold Regional Schools, Amadeus Hospitality, Jefferson County, Chunghwa Telecom, City of Boroondara, Dimension Data
Find out what your peers are saying about F5 Silverline Managed Services vs. Fortinet FortiDDoS and other solutions. Updated: September 2026.
920,769 professionals have used our research since 2012.