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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
20
Ranking in other categories
Web Application Firewall (WAF) (17th)
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 September 2026, in the Distributed Denial-of-Service (DDoS) Protection category, the mindshare of F5 Silverline Managed Services is 2.8%, up from 1.3% compared to the previous year. The mindshare of Fortinet FortiDDoS is 1.8%, down from 2.6% 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 Services2.8%
Fortinet FortiDDoS1.8%
Other95.4%
Distributed Denial-of-Service (DDoS) Protection
 

Featured Reviews

Mohan Janarthanan - PeerSpot reviewer
Associate Vice President at Novac Technology Solutions
Cloud applications have gained stronger protection and real-time defense against web attacks
What really stands out for me in terms of advantages of F5 Silverline Managed Services is that in a single cloud platform, I can protect my web applications against attacks. I can also use my load balancer in F5 because they are providing and acting as a load balancer too, and they will support the volumetric and DDoS attacks and malicious attacks. Regarding the real-time threat intelligence feature, I do use this aspect in F5 Silverline Managed Services. It blocks malicious IPs or bad IPs for my server, protecting against my applications. For example, if someone is a bad actor trying to access via a malicious IP, I can block it because the threat intelligence has the capability to block the malicious IP. The adaptable and flexible security impacts threat response time positively. It is effective because it blocks my malicious traffic. Whenever I face issues related to that application, it automatically routes my traffic to act as a proxy and routes my traffic to their scrubbing center, especially in case of any volumetric attack.
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

"Overall, this is a good security solution, but there is no such thing as a perfect appliance in IT."
"The most valuable feature is flexibility."
"The most valuable feature of F5 Silverline Managed Services is it becomes similar to a distributed architecture."
"If you are looking for web security and don't have any solution, just try it."
"This is a good product that you can rely on."
"The most valuable features are the configuration and configuring the process."
"The stability of the solution is very good."
"The initial setup is very straightforward."
"Compared to other DDoS mitigation solutions with similar deployment, FortiDDoS does not require a 24x7 NOC and has lower TCO."
"We have researched them all, and it's a good solution all around."
"The product allows the users to adjust the thresholds."
"The equipment works very well, and I have not encountered any issues with it. It is a good solution for my company."
"I find the interface easy to use."
"We use it to protect our users and their data."
"We've been completely satisfied with the product."
"The solution already has security profiles and it can protect from DDoS attacks and other kinds of attacks."
 

Cons

"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."
"We need to have support for cloud protection, which is not offered by this solution."
"The price of F5 Silverline Managed Services could be better, they are not very flexible."
"The disadvantages of F5 Silverline Managed Services in comparison to Radware include complexities in WAF technology and iRules, which are highly useful."
"The navigation is difficult to use."
"One negative aspect is that the product is expensive."
"To make this solution much better, they must have a user-friendly configuration interface."
"The product could be improved on the global load and the integration with the other solution like Cisco and Dell. As a representor of the operation, we prefer to have one platform which can accommodate all type of integration. We are also looking for more improvements in the security policy configuration."
"Earlier versions of firmware had bugs that limit my options."
"The product’s pricing needs improvement."
"All those thresholds that need to be configured should be included in the default so that user will not forget or misconfigure."
"The challenge lies within the customer environment, particularly in Brazil, where companies have stringent security requirements for implementing solutions."
"I find that there have been issues in the past year with the solution hanging. It freezes often."
"The solution can be a little more user-friendly and it can be more affordable."
"The tool needs to focus more on the area of application traffic management, where it currently has some shortcomings."
"Technical support isn't too good with Fortinet. They could be more responsive and helpful overall."
 

Pricing and Cost Advice

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

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

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business9
Midsize Enterprise2
Large Enterprise12
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.
913,654 professionals have used our research since 2012.