No more typing reviews! Try our Samantha, our new voice AI agent.

F5 Silverline Managed Services vs SiteLock comparison

Why PeerSpot?
 

Comparison Buyer's Guide

Executive SummaryUpdated on Jun 3, 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

F5 Silverline Managed Services
Ranking in Web Application Firewall (WAF)
14th
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
No ranking in other categories
SiteLock
Ranking in Web Application Firewall (WAF)
37th
Ranking in Distributed Denial-of-Service (DDoS) Protection
27th
Average Rating
6.6
Reviews Sentiment
8.1
Number of Reviews
3
Ranking in other categories
Static Application Security Testing (SAST) (46th), CDN (16th)
 

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 SiteLock is 2.2%, up from 0.7% 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%
SiteLock2.2%
Other94.8%
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.
it_user723534 - PeerSpot reviewer
Guitarist at a media company with self employed
It's not easy to get out once you're in
Sitelock may perform a useful service, but be wary of giving them your credit card information. When you sign on for the paid service, Sitelock: * Hides (makes it difficult to find) that they default the auto-renew (you can't sign up without agreeing to have them automatically bill your credit card every year). * Hides (makes it difficult to find) how to stop auto-renew: * You can't just stop auto-renew from your billing panel, the way you can with reputable businesses. * You have to hunt their website for a link (in extremely small font) to the page which contains instructions for cancelling. * When you get to that page, turns out it's the 5000+ word "Terms of Service" document, which you have to scour to find a phone number. Then, you have to call and get put on hold (or if you like, they will call you back three days later). Once you finally get through, you have to jump through a lot of security hoops. All of the above, just to cancel the service. Their product may or may not be OK, but be forewarned that with Sitelock, it's not easy to get out once you're in.

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."
"F5 technical support is really good; it is better than A10."
"F5 Silverline Web Application Firewall works perfectly fine; it pretty much does everything that an Advanced WAF on-premises should do."
"F5 Silverline offers load balancing, flexibility, and reliability."
"The most valuable feature is flexibility."
"The product’s UI is easy to understand."
"The most valuable feature of F5 Silverline Managed Services is the benchmark performance."
"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."
"Not only did SiteLock's website scanner find the issue with my website, but with SiteLock I was able to implement a security system to prevent future breaches."
"It seems to provide a bit of useful information on website health."
 

Cons

"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."
"Improvements could include the creation of highly optimized profiles, optimization deployments, and compression profiles for better performance."
"We'd like more AI to be used. Right now, they don't use it enough."
"One thing that was a hassle for us regarding F5 Silverline Managed Services was the deployment of this particular software."
"There is room for improvement in the stability of the solution."
"We need to have support for cloud protection, which is not offered by this solution."
"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."
"One negative aspect is that the product is expensive."
"Sitelock may perform a useful service, but be wary of giving them your credit card information."
 

Pricing and Cost Advice

"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."
"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 product’s pricing is reasonable."
"You can't just stop auto-renew from your billing panel, the way you can with reputable businesses."
report
Use our free recommendation engine to learn which Distributed Denial-of-Service (DDoS) Protection solutions are best for your needs.
920,769 professionals have used our research since 2012.
 

Top Industries

By visitors reading reviews
Financial Services Firm
14%
Outsourcing Company
10%
Construction Company
9%
Comms Service Provider
8%
Construction Company
16%
Comms Service Provider
14%
Manufacturing Company
14%
Transportation Company
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business9
Midsize Enterprise2
Large Enterprise13
No data available
 

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...
Ask a question
Earn 20 points
 

Also Known As

F5 Silverline Web Application Firewall, F5 Silverline DDoS Protection
No data available
 

Overview

 

Sample Customers

City Bank, Ricacorp Properties, Miele, American Systems, Bangladesh Post Office
galaxyguitar.com, robertasinc.com, indiarunning.com, comprarenpr.com, idbasolutions.com, newgrip.com
Find out what your peers are saying about F5 Silverline Managed Services vs. SiteLock and other solutions. Updated: September 2026.
920,769 professionals have used our research since 2012.