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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) (15th)
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
 

Mindshare comparison

As of October 2026, in the Distributed Denial-of-Service (DDoS) Protection category, the mindshare of F5 Silverline Managed Services is 2.9%, up from 1.3% compared to the previous year. The mindshare of Fortinet FortiDDoS is 2.0%, 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 Services2.9%
Fortinet FortiDDoS2.0%
Other95.1%
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 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."
"F5 Silverline takes fewer resources to operate."
"The most valuable feature of F5 Silverline Managed Services is it becomes similar to a distributed architecture."
"It's a good front end for public infrastructure"
"The most important feature is that they have seven firewall protection, to protect our web servers."
"The most valuable features are the configuration and configuring the process."
"I think F5 is one of the best web application firewalls in the world."
"The product’s UI is easy to understand."
"It allows me to see all the traffic on my network."
"The most valuable feature is the cloud DDoS scrubbing capability."
"The equipment works very well, and I have not encountered any issues with it. It is a good solution for my company."
"We have researched them all, and it's a good solution all around."
"We've been completely satisfied with the product."
"Packet inspection has been effective for mitigating DDoS attacks."
"The protection resources and the support are valuable features of the solution."
"Compared to other DDoS mitigation solutions with similar deployment, FortiDDoS does not require a 24x7 NOC and has lower TCO."
 

Cons

"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."
"We have complaints about the reliability of this solution."
"We'd like more AI to be used. Right now, they don't use it enough."
"You need to have Linux knowledge in order to use the shell."
"We are doing a lot of automation, so I find the APIs are not very easy to use. So the current automation is not that good for F5 at the moment."
"The product could be improved on the global load and the integration with other solutions like Cisco and Dell EMC."
"F5 Silverline Managed Services could be improved with more intuitive dashboards, a self-service option for respondents, localized support, and better pricing since I think it is high."
"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."
"I find that there have been issues in the past year with the solution hanging. It freezes often."
"The initial setup is complex. It is always complex."
"The main improvement would be to change the firewall model, however, currently, everything is fixed and working well."
"The product’s pricing needs improvement."
"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."
"Technical support isn't too good with Fortinet. They could be more responsive and helpful overall."
"Earlier versions of firmware had bugs that limit my options."
 

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

By visitors reading reviews
Comms Service Provider
14%
Financial Services Firm
13%
Outsourcing Company
9%
Construction Company
8%
Comms Service Provider
15%
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?
My company has a business relationship with F5 Silverline Managed Services, as they charge based on services provided. The operational team handles project configuration. We mostly purchase F5 Silv...
What needs improvement with F5 Silverline Managed Services?
The disadvantages of F5 Silverline Managed Services in comparison to Radware include complexities in WAF technology and iRules, which are highly useful. Radware provides straightforward blocking WA...
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.
915,287 professionals have used our research since 2012.