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A10 Networks Thunder SSL Insight (SSLi) vs Imperva Application Security Platform comparison

 

Comparison Buyer's Guide

Executive Summary

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

A10 Networks Thunder SSL In...
Average Rating
9.0
Number of Reviews
3
Ranking in other categories
SSL/TLS Decryption (2nd)
Imperva Application Securit...
Average Rating
8.6
Reviews Sentiment
6.9
Number of Reviews
147
Ranking in other categories
CDN (2nd), Web Application Firewall (WAF) (1st), Distributed Denial-of-Service (DDoS) Protection (4th), Bot Management (1st), API Security (2nd)
 

Mindshare comparison

A10 Networks Thunder SSL Insight (SSLi) and Imperva Application Security Platform aren’t in the same category and serve different purposes. A10 Networks Thunder SSL Insight (SSLi) is designed for SSL/TLS Decryption and holds a mindshare of 27.3%, up 25.0% compared to last year.
Imperva Application Security Platform, on the other hand, focuses on Distributed Denial-of-Service (DDoS) Protection, holds 8.5% mindshare, up 7.6% since last year.
SSL/TLS Decryption Mindshare Distribution
ProductMindshare (%)
A10 Networks Thunder SSL Insight (SSLi)27.3%
Symantec SSL Visibility Appliance23.2%
GigaSMART21.3%
Other28.200000000000003%
SSL/TLS Decryption
Distributed Denial-of-Service (DDoS) Protection Mindshare Distribution
ProductMindshare (%)
Imperva Application Security Platform8.5%
Cloudflare14.0%
Arbor DDoS7.2%
Other70.3%
Distributed Denial-of-Service (DDoS) Protection
 

Featured Reviews

KM
Data Center Network Engineer at BRIDGETON PUBLIC SCHOOLS
Enables our content filter to do its job without any noticeable delay
Its most valuable feature is its ability to do its job accurately, effectively, and very quickly. The amount of traffic that we have going through our system is astounding. We have 6,900 students and about 1,100 staff members. Most of our teachers and staff are connecting through our system. You add to that all the cell phones, the iPads, and all the computers, and then each individual website's connection, that's a lot of traffic in a period of one second. The delay with the SSL decryption turned on is almost unnoticeable. That is great because most SSL decryption solutions — a couple of competitors we did try — their devices crashed as soon as we turned decryption on.
reviewer2818155 - PeerSpot reviewer
Senior Associate at a tech vendor with 10,001+ employees
Application protection has improved and reporting and dashboards still need refinement
I believe Imperva Application Security Platform should have a more interactive wizard. While the dashboard is good, it could be more eye-catching. Based on my perspective, I recommend modifying the dashboards, especially the main dashboard where I can see the traffic hit count, alerts, and other latest information. In terms of reporting, I find it challenging to create reports; in my earlier days, it was difficult. Over time, I have learned how to create reports, but it should be easier to do so. I have used other tools such as firewalls or SolarWinds, where creating a report is straightforward and does not take much time, unlike in Imperva, where I have to add many elements. Modifications in the integration aspects would also be beneficial.

Quotes from Members

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

Pros

"By not renewing six proxy boxes, rather just three of them, it saved over $100,000."
"We have several proxies in our environment, so we localized internet traffic between these proxies. Instead of getting a really huge proxy box, according to our size, we can use three boxes and share the traffic with A10's load-balancer feature."
"Its most valuable feature is its ability to do its job accurately, effectively, and very quickly. The amount of traffic that we have going through our system is astounding... The delay with the SSL decryption turned on is almost unnoticeable."
"With the Thunder SSLi, we're better protected; we can stop use of VPN and proxies, are better protected against dirty traffic coming back to our schools, and having a secure decrypt zone with the equipment lowers the chances that our security infrastructure could possibly miss an attack."
"This is one of those devices that, once you turn it on and it's functioning properly, you'll forget that you have it."
"With the Thunder SSLi, we're better protected. We can stop use of VPN and proxies. We are better protected against dirty traffic coming back to our schools. Having a secure decrypt zone with the equipment lowers the chances that our security infrastructure could possibly miss an attack."
"The most valuable features of the Imperva Web Application Firewall are DDoS, malware, and the other malicious threat prevention it provides. Additionally, third-party integration is available. You can forward the log for further analysis."
"Based on my experience, and what I know this product can do, I would never recommend another solution."
"​Technical support provides good, quick responses."
"Well, just by using the security rules to block all secured areas by IP minimized the chance of sensitive data leaking outside."
"Anti-DDoS protection, as well as other protections like SQL injection, Cross-Site Scripting, and antiscanner, are valuable to the business due to the daily attacks on our portals that often cannot be seen without a tool like this."
"The stability of the product is good since I haven't had any problems with the solution."
"Integration with IBM AS/400 and Db2 is okay."
"The Imperva Web Application Firewall feature I have found the most valuable is the ease of deployment."
 

Cons

"There is one thing I would like to see changed. In their features for setting things up, there is a templating system that would normally assist clients."
"I would like them to have a better UI (better universal design)."
"It would be great if it supported SSL operations according to Active Directory users. For example, if we want to bypass one of the servers or a client's internet access for SSL interception, we have to do it according to the IP address. It would be better if we could do it according to the Active Directory username. A10 says they kind of support that but we haven't tested it."
"I would like them to have a better UI (better universal design)."
"SSLi is a very powerful device. It has many features and to get them configured is kind of tough."
"There is one thing I would like to see changed. In their features for setting things up, there is a templating system that would normally assist clients. However, we had a better time setting up the device either through the command line or through the interface and not using the templates that were pre-installed. So there is room for improvement to the templates for initial installation."
"The firewall aspect of the solution needs improvement."
"The user interface could be better."
"We faced issues regarding compliance with client procedures. The client had strict compliance rules, and Imperva needed to be on a VM, while the client required containerization, causing a conflict. They went with Imperva for the on-premise version but shelved the cloud project due to too many blockers."
"Imperva Application Security Platform could be improved by providing a more user-friendly dashboard."
"In the past, I have bugs on the WAF. I've contacted Imperva about them. Future releases should be less buggy."
"It would be better if we were able to manage and apply changes to multiple websites/web applications, and search WAF logs for multiple websites, via the Incapsula dashboard."
"HTML minification could be improved. The actual HTML minification does not provide the maximum HTML minification nor provides the best result."
"Management of policies and rules can be complicated and the physical setup of the product has implications on HA."
 

Pricing and Cost Advice

"Our licensing costs, yearly, are just under $15,000. Your initial cost of acquisition is obviously going to be more than $15,000..."
"We always pay for support. Any organization of our size who doesn't is asking for problems."
"When you purchase the equipment, you purchase the licensing and warranty. It's all fairly standard. We haven't been caught with anything surprising."
"The solution's pricing is an issue."
"For enterprise contracts you will be in touch with a dedicated account manager who will guide you regarding licensing."
"The data packages are higher than our needs so we end up paying for data that we don't use."
"On a scale from one to ten, where one is cheap and ten is expensive, I rate the solution's pricing a five out of ten."
"We are satisfied with the pricing."
"The tool's pricing is good."
"The license is on a yearly basis."
"The price is high compared to other solutions like FortiWeb."
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Top Industries

By visitors reading reviews
No data available
Financial Services Firm
12%
Manufacturing Company
8%
Computer Software Company
7%
Comms Service Provider
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
By reviewers
Company SizeCount
Small Business88
Midsize Enterprise25
Large Enterprise70
 

Questions from the Community

Ask a question
Earn 20 points
Which Web Application Firewall (WAF) would you recommend? R&S or Imperva?
Imperva is a strong choice, given their security focus and ongoing R&D into the product in areas such as bot management.
What is your experience regarding pricing and costs for Imperva DDoS?
The pricing, setup costs, and licensing of Imperva DDoS are reasonable for the amount of technical capabilities provided. I would rate the pricing of Imperva DDoS as five, where one is very cheap a...
What needs improvement with Imperva DDoS?
I would like to see improvements in the pooling of threats and attacks, possibly to enlarge the scale of indicators of compromise. For example, the initiation of an attack on the endpoint level cou...
 

Also Known As

Thunder SSLi
Imperva Bot Management, Imperva Web Application Firewall, Imperva API Security
 

Overview

 

Sample Customers

Klein Independent School District
Hitachi, BNZ, Bitstamp, Moz, InnoGames, BTCChina, Wix, LivePerson, Zillow and more.
Find out what your peers are saying about Broadcom, A10 Networks, Gigamon and others in SSL/TLS Decryption. Updated: May 2026.
895,399 professionals have used our research since 2012.