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

The compared A10 Networks and F5 solutions aren't in the same category. A10 Networks is ranked #2 in STD , and holds a 27.3% mindshare in the category. F5 is ranked #1 in ADC , with an average rating of 9.2, and holds a 13.0% mindshare. Additionally, 75% of A10 Networks users are willing to recommend the solution, compared to 83% of F5 users who would recommend it.

A10 Networks Thunder SSL In...

Read 3 A10 Networks Thunder SSL Insight (SSLi) reviews

666 Views
346 Comparison Views

75% willing to recommend

F5 BIG-IP Local Traffic Man...

Read 124 F5 BIG-IP Local Traffic Manager (LTM) reviews

9,455 Views
6,524 Comparison Views

83% willing to recommend

A10 Networks Thunder SSL In...

F5 BIG-IP Local Traffic Man...

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Executive Summary

We performed a comparison between A10 Networks Thunder SSL Insight (SSLi) and F5 BIG-IP Local Traffic Manager (LTM) based on real PeerSpot user reviews.

Find out what your peers are saying about Broadcom, A10 Networks, Gigamon and others in SSL/TLS Decryption.

To learn more, read our detailed SSL/TLS Decryption Report (Updated: April 2026).

Buyer's Guide

SSL/TLS Decryption

April 2026

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Helped 892,943 peers since 2012

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

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 27.3%, up 25.0% compared to last year.
F5 BIG-IP Local Traffic Manager (LTM), on the other hand, focuses on Application Delivery Controllers (ADC), holds 13.0% mindshare, down 15.4% since last year.

SSL/TLS Decryption Mindshare Distribution
Product	Mindshare (%)
A10 Networks Thunder SSL Insight (SSLi)	27.3%
Symantec SSL Visibility Appliance	23.2%
GigaSMART	21.3%
Other	28.200000000000003%

SSL/TLS Decryption

Application Delivery Controllers (ADC) Mindshare Distribution
Product	Mindshare (%)
F5 BIG-IP Local Traffic Manager (LTM)	13.0%
NetScaler	12.1%
HAProxy	8.9%
Other	66.0%

Application Delivery Controllers (ADC)

Featured Reviews

Kenneth Murray

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.

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edshyaa

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.

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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."

"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."

"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."

"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 capability is at a seven or eight out of ten."

"F5 BIG-IP Local Traffic Manager is a stable and reliable solution."

"We used to have Cisco, then we have Citrix NetScaler, but the Citrix NetScaler is just a load balancer and did not give me the complete ADC features, which is why F5 is the king of load balancing."

"The most valuable features are the WAF and the big IP."

"LTM's most valuable features include application security, data collection, and parameter-level rules."

"F5 BIG-IP Local Traffic Manager (LTM) is a perfect product for load balancing and WAF, and I would recommend it far more than any other product."

"F5 BIG-IP is very stable."

"The scalability of the solution depends on the sizing of the network. Generally, the scalability is quite good."

More F5 BIG-IP Local Traffic Manager (LTM) pros

Cons

"SSLi is a very powerful device. It has many features and to get them configured is kind of tough."

"I would like them to have a better UI (better universal design)."

"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."

"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."

"The user interface could be improved in F5 BIG-IP Local Traffic Manager."

"Based on my experience using F5 and by only taking into consideration the last seven years, I have found that the reporting mechanism is bad."

"Right now, there are a lot of products within F5's portfolio. They acquired a couple of companies like NGINX and Volterra, and some features and technologies overlapped when this acquisition occurred, so they need to refine it and come up with a single, proper solution."

"They can improve on the DDOS solution and have more stable solutions."

"BIG-IP LTM is taking a long time to mature in cloud environments. They plan to improve cloud integration in the next version, but it isn't out yet. It's essential because more companies are moving to the cloud these days and using things like Kubernetes or microservices. F5 needs to improve in that direction, and they are."

"Unfortunately, we faced hardware failures and a lot of other problems, as well. With the hardware failure problem, we faced a management problem via the GUI."

"The pricing of the product is a bit too high."

"Its GUI could be a bit better. Other than that, it's already pretty good. We don't use it in a high-performance environment. So, we don't really care so much about too many features."

More F5 BIG-IP Local Traffic Manager (LTM) cons

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."

"F5 is expensive."

"Unless the price difference is large, this is not the primary concern for the product. The performance and product-related issues (secure for VPN, multi-function for network device, etc.) are the keys."

"It is a little pricey. I wish the pricing was cheaper, but I wish the pricing was cheaper for everything."

"Compared to using open-source products, the prices are not cheap."

"F5 is more expensive than other solutions, so you have to be sure F5 is the best solution to fit the requirements."

"The pricing is inclusive of many features."

"I use a yearly subscription, which is the most expensive one now compared to its competitors."

"It is the best solution, but that comes with an increased price."

More F5 BIG-IP Local Traffic Manager (LTM) pricing and cost advice

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Top Industries

By visitors reading reviews

No data available

Financial Services Firm

16%

Computer Software Company

Manufacturing Company

Government

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

No data available

By reviewers
Company Size	Count
Small Business	62
Midsize Enterprise	32
Large Enterprise	86

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...

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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...

See all answers

What is your experience regarding pricing and costs for F5 BIG-IP Local Traffic Manager (LTM)?

The product is costly. I would rate the price a five out of ten.

See all answers

Comparisons

GigaSMART vs A10 Networks Thunder SSL Insight (SSLi)

Compared 22% of the time

Symantec SSL Visibility Appliance vs A10 Networks Thunder SSL Insight (SSLi)

Compared 19% of the time

Fortinet FortiADC vs A10 Networks Thunder SSL Insight (SSLi)

Compared 18% of the time

Comodo Essential SSL Wildcard Certificate vs A10 Networks Thunder SSL Insight (SSLi)

Compared 15% of the time

More A10 Networks Thunder SSL Insight (SSLi) Competitors

Fortinet FortiADC vs F5 BIG-IP Local Traffic Manager (LTM)

Compared 15% of the time

NetScaler vs F5 BIG-IP Local Traffic Manager (LTM)

Compared 6% of the time

HAProxy vs F5 BIG-IP Local Traffic Manager (LTM)

Compared 6% of the time

NGINX Plus vs F5 BIG-IP Local Traffic Manager (LTM)

Compared 5% of the time

A10 Networks Thunder ADC vs F5 BIG-IP Local Traffic Manager (LTM)

Compared 5% of the time

More F5 BIG-IP Local Traffic Manager (LTM) Competitors

Product Reports

Buyer's Guide

A10 Networks Thunder SSL Insight (SSLi)

May 2026

A10 Networks Thunder SSL Insight (SSLi) report

Download A10 Networks Thunder SSL Insight (SSLi) product report

Buyer's Guide

F5 BIG-IP Local Traffic Manager (LTM)

May 2026

F5 BIG-IP Local Traffic Manager (LTM) report

Download F5 BIG-IP Local Traffic Manager (LTM) product report

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

A10 Networks Thunder SSL Insight (SSLi) enhances network visibility by decrypting SSL traffic, allowing enterprises to inspect encrypted data seamlessly.

A10 Networks Thunder SSL Insight (SSLi) is designed for businesses needing in-depth traffic inspection while maintaining security compliance. By decrypting SSL traffic, it ensures deeper visibility into encrypted data without compromising security. It integrates smoothly into existing infrastructures, offering comprehensive analytics and real-time threat detection capabilities, addressing the growing challenge of encrypted traffic in networks.

What are the key features of A10 Networks Thunder SSLi?

Advanced Traffic Decryption: Efficiently decrypts SSL traffic for seamless inspection.
Scalable Integration: Easily fits within existing network architectures.
Comprehensive Analytics: Delivers detailed insights into network traffic.

What benefits can users expect from A10 Networks Thunder SSLi?

Enhanced Security: Improves threat detection by exposing encrypted threats.
Increased Visibility: Provides a clearer understanding of network traffic patterns.
Improved Compliance: Helps ensure adherence to security regulations.

A10 Networks Thunder SSL Insight (SSLi) is widely implemented in finance and healthcare sectors, where data security and compliance are critical. It supports seamless integration that assists these industries in maintaining strict privacy standards while gaining comprehensive insight into network activities.

A10 Networks

F5 BIG-IP Local Traffic Manager (LTM) specializes in load balancing, iRules, and application security. It provides flexibility and stability, supporting SSL offloading and enhancing application performance and reliability with low downtime.

F5 BIG-IP LTM is designed for efficient traffic management and security. Its intuitive interface allows users to customize traffic through iRules and ensures stable application delivery. Its performance stability and ability to inspect TLS traffic, along with web application firewall features, make it preferred for consistent application delivery. While praised for its capabilities, users note its challenges with complex configuration and management. Calls for streamlined processes, training, support, better logging, and cloud integration highlight areas for improvement.

What are the key features of F5 BIG-IP LTM?

Load Balancing: Distributes HTTP and HTTPS traffic to ensure high availability.
iRules: Allows for customized traffic management.
Application Security: Includes TLS inspection and web application firewall capabilities.
SSL Offloading: Reduces server load by handling SSL processing.

What benefits and ROI should users expect?

Performance Stability: Ensures high reliability and less downtime.
Flexibility: Offers customizable traffic management through iRules.
Security: Provides strong protection against application attacks.
Network Management Efficiency: Simplifies traffic distribution and infrastructure management.

F5 BIG-IP LTM is widely used in industries requiring robust application delivery and security, such as finance and healthcare. It supports load balancing and traffic management across different environments and acts as a reverse proxy, helping companies secure their infrastructure against cyber threats while facilitating high availability and scalability.

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: April 2026.

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