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A10 Networks Thunder SSL Insight (SSLi) vs F5 BIG-IP Local Traffic Manager (LTM) comparison

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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)
F5 BIG-IP Local Traffic Man...
Average Rating
8.2
Reviews Sentiment
6.8
Number of Reviews
124
Ranking in other categories
Application Delivery Controllers (ADC) (1st)
 

Mindshare comparison

A10 Networks Thunder SSL Insight (SSLi) and F5 BIG-IP Local Traffic Manager (LTM) 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 23.9%, down 32.5% compared to last year.
F5 BIG-IP Local Traffic Manager (LTM), on the other hand, focuses on Application Delivery Controllers (ADC), holds 11.9% mindshare, down 15.9% since last year.
SSL/TLS Decryption Mindshare Distribution
ProductMindshare (%)
A10 Networks Thunder SSL Insight (SSLi)23.9%
Symantec SSL Visibility Appliance23.6%
GigaSMART18.3%
Other34.2%
SSL/TLS Decryption
Application Delivery Controllers (ADC) Mindshare Distribution
ProductMindshare (%)
F5 BIG-IP Local Traffic Manager (LTM)11.9%
NetScaler11.3%
HAProxy8.1%
Other68.69999999999999%
Application Delivery Controllers (ADC)
 

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.
edshyaa - PeerSpot reviewer
Network Engineer at Stryker
Load balancing has improved traffic distribution and currently supports high availability upgrades
F5 BIG-IP Local Traffic Manager (LTM) offers effective load balancing methods that help distribute traffic across our servers, whether we have two or several. This load balancing feature stands out as it is the fundamental work we do with F5 BIG-IP Local Traffic Manager (LTM). While I recognize there are many features, such as iRules, which I have not explored yet, we primarily work on VIPs, pool members, and traffic distribution. The load balancing algorithms' flexibility makes them very useful for our team, enabling us to choose different servers and manage load effectively. We use various methods based on user or application requirements, making the algorithms set up by F5 in the backend quite helpful. F5 BIG-IP Local Traffic Manager (LTM) positively impacts our organization primarily through its load balancing capabilities. We avoid traffic overload on individual servers by placing backend servers behind F5 BIG-IP Local Traffic Manager (LTM) VIP. This load balancing helps us manage traffic effectively. Since the configuration of the I-series, we have had smooth performance, and with the recent migration to the R-series, it is working faster than before, providing positive outcomes for our operations. Since moving to the R-series, I notice improved performance; it is user-friendly and handles traffic efficiently. The upgrading process is different as we create tenants and a main host. R-series has better CPU and memory, leading to higher throughput with minimal downtime, making it a significant improvement over the I-series.

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."
"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."
"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, 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."
"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."
"BIG-IP LTM's most valuable feature is that it allows you to seamlessly add more servers without impacting your application's configuration."
"The most valuable feature of this solution is IP Intelligence."
"F5 BIG-IP Local Traffic Manager (LTM) improves the resilience and quality of the application itself, the speed and the user experience for the application. The data that the users need from the application is actually acquired faster. So, it provides faster data acquisition."
"This is a very stable solution; I've been using their products for years and have never had any issues."
"In my experience, I have received excellent support from F5 for any technical issues that I or my customers have faced."
"The combination of ADC and WAN is the most valuable feature."
"The tech support we got from F5 BIG-IP Local Traffic Manager directly was pretty good."
"The technical support is one of the best I have seen in their field."
 

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. 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."
"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 a need for a more modular version to concentrate on the current monolithic structure of both the virtual and hardware versions."
"The technical support is very poor. They do not deliver on their SLAs, and even when we escalate the issue, we do not get a good response in 24 hours."
"Recently, I've seen one of the attacks on this particular network, where they managed to bypass its multi-factor authentication."
"Internet and cloud support could be improved."
"F5 BIG-IP Local Traffic Manager (LTM) could improve file upload speeds when opening cases and attaching files; sometimes, downloading files like QKView takes time, depending on size."
"A more hybrid approach would be beneficial for users."
"To improve the product, they could add more load balancing solutions in Kubernetes."
"A lot of functions that are attributed to iRules can actually be simple profile changes. iRules do have a certain performance impact. Therefore, instead of writing simple iRules, they can create certain profiles for classes that will perform the same function."
 

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."
"It is the best solution, but that comes with an increased price."
"It is sort of a commodity product. A load balancer is a load balancer. What will be, at the end of the day, the cheapest option or have the best performance, that is what it will come down to."
"I am a fan of using AWS natively. It is much cheaper."
"In my view, the cost is somewhat on the higher side. There are discounts available, but I wouldn't say it's overpriced. It's not cheap either, and the value for money is a bit higher from that perspective."
"F5 pricing is too high, compared to Citrix."
"The price is high."
"If you are planning to use security features, better to go for strong hardware and the best bundle license, which is great for web security."
"There are no additional fees to the standard licensing fee; everything is paid once."
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Top Industries

By visitors reading reviews
Outsourcing Company
15%
Comms Service Provider
9%
Manufacturing Company
9%
Recreational Facilities/Services Company
7%
Financial Services Firm
14%
Outsourcing Company
13%
Construction Company
7%
Manufacturing Company
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
By reviewers
Company SizeCount
Small Business62
Midsize Enterprise32
Large Enterprise86
 

Questions from the Community

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What needs improvement with F5 BIG-IP?
F5 BIG-IP Local Traffic Manager (LTM) could improve file upload speeds when opening cases and attaching files; sometimes, downloading files like QKView takes time, depending on size. I expect faste...
What is your primary use case for F5 BIG-IP?
My main use case for F5 BIG-IP Local Traffic Manager (LTM) is placing our applications on F5 and the backend servers on the pool. We also regularly renew SSL certificates before they expire, usuall...
 

Also Known As

Thunder SSLi
F5 BIG-IP, BIG-IP LTM, F5 ASM, Viprion, F5 BIG-IP Virtual Edition , Crescendo Networks Application Delivery Controller, BIG IP
 

Overview

 

Sample Customers

Klein Independent School District
Riken, TransUnion, Tepco Systems Administration, Daejeon University, G&T Bank, Danamon, CyberAgent Inc.
Find out what your peers are saying about Broadcom, A10 Networks, Gigamon and others in SSL/TLS Decryption. Updated: August 2026.
914,262 professionals have used our research since 2012.