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

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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 22.3%, down 31.8% compared to last year.
F5 BIG-IP Local Traffic Manager (LTM), on the other hand, focuses on Application Delivery Controllers (ADC), holds 11.6% mindshare, down 16.1% since last year.
SSL/TLS Decryption Mindshare Distribution
ProductMindshare (%)
A10 Networks Thunder SSL Insight (SSLi)22.3%
Symantec SSL Visibility Appliance25.0%
Fidelis Elevate19.0%
Other33.7%
SSL/TLS Decryption
Application Delivery Controllers (ADC) Mindshare Distribution
ProductMindshare (%)
F5 BIG-IP Local Traffic Manager (LTM)11.6%
NetScaler11.6%
HAProxy8.3%
Other68.5%
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

"This is one of those devices that, once you turn it on and it's functioning properly, you'll forget that you have it."
"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."
"By not renewing six proxy boxes, rather just three of them, it saved over $100,000."
"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."
"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."
"Use F5. It has a good reputation."
"F5's attack signatures and automation are the most valuable features. The disaster recovery capabilities are also excellent. You don't need to do anything. It has automatic failover from production."
"We're able to do load balancing and global load balancing. When you marry those two products together, you can do a lot more. We're able to deliver our applications more securely and faster. It has improved our deliverability where we have more service across the shared data centers. We can intelligently reach all of those client connections across all of the servers and do it fairly quickly. It has helped improve our application delivery and performance."
"In summary, this is a very good product and we are actively suggesting it to our customers."
"BIG-IP LTM's most valuable feature is that it allows you to seamlessly add more servers without impacting your application's configuration."
"Technical support and documentation are excellent."
"F5 Big-IP Local Traffic Manager has better modular features especially LTM, which according to the clients, is very beneficial, and most of the users opt for a combination of Big-IP LTM and WAF which helps them to leverage application load balancing and enhance application security many-fold."
"The benefit is security; it's able to track issues and attacks, enabling us to catch the attacks before they hit us."
 

Cons

"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."
"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."
"In future, I would like there to be more device security. I would like the tool to support SSL links, along with SSL and TLS."
"This solution could be improved by reducing the cost."
"It requires a particular skill or training before being able to manage it."
"Currently, the product offers everything we need. I can't recall any features that may be lacking."
"For integration with other AWS environments, we do some tie-ins with some autoscaling groups. This has been challenging for us. We have had issues, where when autoscaling groups scale up, there are some instances which are not showing up in the proper size. Then, those IPs would get registered with F5, but never get released. Therefore, we are ending up with a whole bunch of ghosted IPs."
"I wouldn't recommend the tool to small companies, considering its high price and the infrastructure needs of small businesses."
"The product is expensive."
"I would like to see improvement in the manageability and easier setup."
 

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."
"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."
"The price should be reduced because it is expensive when compared to the competition."
"F5 isn’t cheap but is worth the price."
"There are additional costs depending on what modules or what functionality is required."
"When we purchased additional licenses for our other locations, we received a discount of between 20% and 25%."
"Purchasing through the AWS Marketplace was good. We chose to go through the AWS Marketplace because everything that we needed was a soft appliance. We needed something to work in Amazon, and this product was available there."
"We purchased through the AWS Marketplace because it was a popular way to go, and we were intrigued. The price of this product is not an issue. They have good pricing and licensing."
"It is a little pricey. I wish the pricing was cheaper, but I wish the pricing was cheaper for everything."
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Top Industries

By visitors reading reviews
Outsourcing Company
14%
Comms Service Provider
9%
Manufacturing Company
9%
Construction Company
7%
Financial Services Firm
14%
Outsourcing Company
12%
Manufacturing Company
8%
Construction 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: October 2026.
916,212 professionals have used our research since 2012.