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A10 Networks Thunder SSL Insight (SSLi) vs Symantec Web Application Firewall 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)
Symantec Web Application Fi...
Average Rating
8.6
Reviews Sentiment
7.4
Number of Reviews
4
Ranking in other categories
Web Application Firewall (WAF) (29th)
 

Mindshare comparison

A10 Networks Thunder SSL Insight (SSLi) and Symantec Web Application Firewall 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 31.8%, up 24.8% compared to last year.
Symantec Web Application Firewall, on the other hand, focuses on Web Application Firewall (WAF), holds 0.3% mindshare, up 0.2% since last year.
SSL/TLS Decryption Market Share Distribution
ProductMarket Share (%)
A10 Networks Thunder SSL Insight (SSLi)31.8%
GigaSMART26.6%
Symantec SSL Visibility Appliance20.8%
Other20.799999999999997%
SSL/TLS Decryption
Web Application Firewall (WAF) Market Share Distribution
ProductMarket Share (%)
Symantec Web Application Firewall0.3%
F5 Advanced WAF9.0%
Microsoft Azure Application Gateway7.5%
Other83.2%
Web Application Firewall (WAF)
 

Featured Reviews

CH
We used to have to bypass on the firewall, proxy, and IPS; now we can do it in one place
For us, 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. Another thing is SNI. A10 intercepts all the traffic according to the SNI, the server name indicator. It would be better if it intercepted traffic according to the IP addresses. A10 can only understand that a website is within the banking category or the website is in the social media category, according to the SNI. Without SNI, there is no way to understand it; there is no bypass operation. It would be better if worked without SNI as well. Also, the solution comes with web categories like banking and social media. There are suspicious URLs, malicious URLs, etc. It would be better if it had an application category as well. For example, it would be helpful if we had the chance to bypass all Office 365 applications: OneDrive, Skype, Outlook, etc. According to Microsoft, we need to bypass SSL for all Office 365 applications but we need to create custom categories and put all the Microsoft URLs in them and then we can bypass. It would be great if an application category could recognize Dropbox, for example. For now, we have to put the Dropbox URLs in one custom category and bypass them. Application categories could be very useful.
Vatsal Mehta - PeerSpot reviewer
Boosts Security Measures with Easy Deployment and Implementation
Regarding areas for improvement in Symantec Web Application Firewall, I think they can enhance the features they currently focus on, as there are various types of web applications, and it would be great if they could develop features to cater to all these types. For example, a feature to scan for unauthorized plugins or extensions could let us know if those extensions are authorized, unauthorized, or malicious. There's room for improvement in Symantec Web Application Firewall by introducing AI into their dashboard so that we can query the dashboard and fetch data insights, similar to querying ChatGPT for answers. They currently have this feature but can make improvements for better querying to get insights.

Quotes from Members

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

Pros

"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. 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."
"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."
"The interface is user-friendly."
"The best feature of Symantec Web Application Firewall is that it is very easy to use, and the deployment and implementation processes are really easy."
"The setup was straightforward."
"The solution has an up-to-date data repository to deal with external threats."
"The best feature of Symantec Web Application Firewall is that it is very easy to use, and the deployment and implementation processes are really easy."
 

Cons

"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."
"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."
"There's room for improvement in Symantec Web Application Firewall by introducing AI into their dashboard so that we can query the dashboard and fetch data insights, similar to querying ChatGPT for answers."
"There's room for improvement in Symantec Web Application Firewall by introducing AI into their dashboard so that we can query the dashboard and fetch data insights, similar to querying ChatGPT for answers."
"Sometimes scanning slows down the endpoints."
"It would be an improvement if the management dashboards were not reliant upon Java."
"I'm not convinced that it's necessary the best solution going forward in the future."
 

Pricing and Cost Advice

"When you purchase the equipment, you purchase the licensing and warranty. It's all fairly standard. We haven't been caught with anything surprising."
"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."
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Top Industries

By visitors reading reviews
Financial Services Firm
12%
Manufacturing Company
10%
Recreational Facilities/Services Company
8%
Government
8%
No data available
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
No data available
 

Questions from the Community

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What needs improvement with Symantec Web Application Firewall?
Regarding areas for improvement in Symantec Web Application Firewall, I think they can enhance the features they currently focus on, as there are various types of web applications, and it would be ...
What is your primary use case for Symantec Web Application Firewall?
Our use case for Symantec Web Application Firewall is primarily for security purposes as we develop web application solutions for our customers. We have a business where we provide solutions for cr...
What advice do you have for others considering Symantec Web Application Firewall?
I would recommend Symantec Web Application Firewall to other users due to all the benefits I mentioned earlier, such as ease of use, ease of implementation, good technical support, and compared to ...
 

Also Known As

Thunder SSLi
Symantec WAF, Blue Coat Protecting Web Applications
 

Overview

 

Sample Customers

Klein Independent School District
Information Not Available
Find out what your peers are saying about Broadcom, A10 Networks, Fidelis Security and others in SSL/TLS Decryption. Updated: October 2025.
871,358 professionals have used our research since 2012.