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A10 Thunder TPS vs Corero comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Dec 5, 2024

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

Cloudflare
Sponsored
Ranking in Distributed Denial-of-Service (DDoS) Protection
1st
Average Rating
8.6
Reviews Sentiment
7.1
Number of Reviews
76
Ranking in other categories
CDN (1st), Managed DNS (1st), Cloud Security Posture Management (CSPM) (13th)
A10 Thunder TPS
Ranking in Distributed Denial-of-Service (DDoS) Protection
15th
Average Rating
8.6
Reviews Sentiment
7.0
Number of Reviews
15
Ranking in other categories
No ranking in other categories
Corero
Ranking in Distributed Denial-of-Service (DDoS) Protection
18th
Average Rating
8.4
Reviews Sentiment
7.3
Number of Reviews
6
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of August 2025, in the Distributed Denial-of-Service (DDoS) Protection category, the mindshare of Cloudflare is 19.7%, up from 18.9% compared to the previous year. The mindshare of A10 Thunder TPS is 2.0%, up from 1.5% compared to the previous year. The mindshare of Corero is 2.7%, down from 2.9% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Distributed Denial-of-Service (DDoS) Protection
 

Featured Reviews

Carlos Alam Hernandez Baruch - PeerSpot reviewer
Fast and secure deployments simplify operations for government and fintech clients
It is a fast and secure DNS. It is very easy to deploy, and my customers are happy with this tool. Additionally, the CDN performance in Mexico is excellent, providing fast service and tools. It offers reliability during high-traffic periods, ensuring no impact on the environment. It helps my clients avoid using on-premise boxes, simplifying operations as they only use the prices on Cloudflare.
David Mello - PeerSpot reviewer
A highly stable solution that can be used for load balancing
We contacted the solution's technical support to maintain and exchange the power supply. A few versions ago, we had some CPU and memory problems. We just started the appliance, and it was already on 70% of CPU usage. We first contacted our reseller in Brazil and then escalated the issue to A10 Thunder TPS support. The reseller in Brazil was a little slow, but the A10 Thunder TPS support was fast.
Björn Lindman - PeerSpot reviewer
The product is highly stable and has valuable features, but it must provide more Layer 7 capabilities
We use the solution for DDoS protection in the routers The DDoS protection features are valuable. The product must provide more Layer 7 capabilities. It must provide deep inspection features. I have been using the solution for ten years. The tool has high stability. I rate the stability a nine…

Quotes from Members

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

Pros

"Cloudflare consolidates various capabilities into one product, streamlining processes."
"Generally, I am satisfied with this product."
"The UI is good."
"The most valuable feature is the web application firewall."
"The most valuable feature of the solution is external DNS. It is also very secure. They have their own main server and once you configure it, the product takes care of everything. There are no issues in resolving IPs and low latency is also present."
"The solution is stable, and the DNS servers are simple to use."
"It is a stable solution. I rate the stability a ten out of ten...I rate the scalability a ten out of ten."
"It is easier to configure and develop documentation to see how we have configured firewalls."
"The solution is easy to use and implement in terms of operations."
"The solution has reduced the amount of manual intervention required during an attack. We have the inline solution and when it comes to the customers that we have on it, it has saved us some troubleshooting time."
"The product's initial setup phase is very simple."
"The GUI is very use-friendly. You can configure it through CLI or GUI, they give you an option to choose. It's a good solution in terms of the appliance itself. It's very light compared to other brands that offer DDoS solutions."
"The solution's support is one of the coolest things about the product. I"
"The most valuable feature of A10 Thunder TPS is load balancing."
"The primary benefit that we see from their systems is that their filtering technology has the ability to detect and drop the malicious traffic from the legitimate traffic with a high success rate. That, in combination with the very small effort needed to manage their systems, are the two most important benefits to us."
"Thunder TPS has automated mitigation and fully managed support in case the device cannot handle the attack. They have engineers available to respond."
"The most important aspect, in general, is that the price is suitable for most clients."
"SmartWall devices occupy only one-fourth of the width of a rack unit, making them very easy to install."
"It is a good solution. Its vendor support is the most valuable. It is simple and works well if you have Juniper MX routers."
"It is an agnostic and transparent inline platform, which means that the maximum visibility of the symmetric and asymmetric traffic is available, even allowing bidirectional detection of the attack."
"The DDoS protection features are valuable."
"This is a hybrid solution."
"The most valuable feature of Corero is its ability to handle smaller attacks in terms of the amount of volume and time. You can handle almost 100 perfect of the attacks locally."
 

Cons

"In the last two years, there has been a certain amount of downtime when using the VDM."
"Technical support is not well developed. While there are good engineers, Cloudflare does not offer hands-on technical support to fix customer problems but rather a self-service model."
"There could be more courses with engineers. I like e-learning, however, having a specialist in a classroom is more comfortable for me."
"The tool needs to improve caching of servers. The product needs to include PFX certificate as well."
"For large enterprises, the pricing is okay. However, the enterprise price for small projects is a bit high. A mid-tier pricing option would be beneficial."
"There might be helpful if there was some web application firewall feature."
"Sometimes their more advanced caching tools can cause higher first-byte times and problems with JavaScript."
"Cloudflare could be improved by introducing a mid-tier pricing option."
"The solution needs improvement in terms of fail-open."
"The problem here is when you buy another box from A10, they want to put Thunder TPS to run, and it works okay, after which we cannot block it for another solution to be used, which is a problem for me where improvements are needed."
"Its documentation could be better."
"We have had some issues with implementation. So, it is the only area that needs improvement."
"I rate Thunder TPS seven out of 10 for scalability."
"The solution is a little expensive."
"They have a cloud scrubbing feature that redirects the traffic if the on-prem appliance can't accommodate a large amount of traffic but it's not available where we are."
"We currently do not use the solution's machine-learning-powered Zero-day Automated Protection because of an issue with it... We also use the aGalaxy platform, which is a management platform for the TPS devices. The issue is that some TPS features were added at the TPS level but weren't carried over to aGalaxy, and we manage all of our devices through aGalaxy. So we can't actually use some of the new features that are available on the TPS because that functionality doesn't exist in aGalaxy. That is one of my biggest complaints."
"It could use support in Spanish."
"Lacks international presence."
"Corero needs to improve its application DDoS prevention capabilities and user behavior detection features."
"The product must provide more Layer 7 capabilities."
"The approach taken by Corero is to partner with other organizations in order to address volumetric attacks that cannot be handled by the hardware installed in the infrastructure. Corero does not have a solution for these attacks, so they are looking for partners to help them manage them. This approach is supplemented by local hardware, but the main focus is on the partnerships. It would be beneficial to have a more complete solution."
"Juniper is known in our country, but it is not very popular. There is also not enough information about Corero. Our enterprise and financial sectors don't know about this solution. They need to provide more information and do more marketing for this solution in our country."
 

Pricing and Cost Advice

"A free version of the solution is available."
"The tool is a premium product, so it is very expensive."
"The pricing for the service is reasonable, neither excessively cheap nor prohibitively expensive. It aligns well with the value of their solution."
"For Cloudflare, I recommend it heavily for small businesses with revenue under a couple of million dollars. Onboarding is easy, and they even have a free plan. This makes it simple for businesses in the $100,000-$500,000 range to try it out and see its value, allowing them to scale up their infrastructure as needed."
"I believe their performance has improved, but I'd like to refrain from discussing the pricing aspect related to the cloud. The pricing, in my opinion, could be simplified, and I think they should consider reevaluating the pricing for support, as it can be quite high. At times, this cost can make it challenging to choose CARFAGuard or opt for the support."
"The price of the solution is expensive."
"The pricing depends on the usage, but the cheapest would be around 5,000 USD a month."
"The solution has many features but there are ones that you need to pay for. Sometimes you have to find out which is available for free and which you have to pay for."
"Pricing is very reasonable."
"Pricing was much higher with Arbor (APS) for the same type of solution."
"We had a customer who was down for six hours and the loss of revenue for him was three times the price he was paying for us per year. The customer just said, "I don't care about paying you because on only one attack I saved money. It's three times better than losing money.""
"The financials are always a challenge with this type of technology. That's not really a product-functionality thing but it's the area where we push A10 the most."
"We did a price survey, and compared to other solutions, A10 Thunder TPS wasn't cheap."
"We may need to pay fifty percent more if we purchase other solutions. For the payments made to A10 Thunder TPS, we have received three-year support."
"The tool is expensive. If one is low price and ten is expensive, I rate the tool's price as a ten."
"The price of Corero is affordable."
"Its price is normal."
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Top Industries

By visitors reading reviews
Computer Software Company
15%
Comms Service Provider
11%
Financial Services Firm
9%
Manufacturing Company
7%
Comms Service Provider
36%
Financial Services Firm
8%
Computer Software Company
6%
Performing Arts
5%
Computer Software Company
22%
Comms Service Provider
11%
Government
7%
Financial Services Firm
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
 

Questions from the Community

Which is the best DDoS protection solution for a big ISP for monitoring and mitigating?
Cloudflare. We are moving from Akamai prolexic to Cloudflare. Cloudflare anycast network outperforms Akamai static GR...
Which would you choose - Cloudflare DNS or Quad9?
Cloudflare DNS is a very fast, very reliable public DNS resolver. It is an enterprise-grade authoritative DNS service...
What do you like most about Cloudflare?
Cloudflare offers CDN and DDoS protection. We have the front end, API, and database in how you structure applications.
What do you like most about A10 Thunder TPS?
The most valuable feature of A10 Thunder TPS is load balancing.
What is your experience regarding pricing and costs for A10 Thunder TPS?
I have not seen specific prices, like $10,000 or $20,000. A frustrating aspect is the lack of demo versions. The vend...
What needs improvement with A10 Thunder TPS?
I had issues with the user interface because, when putting settings up, the system asked me for strange things like v...
What do you like most about Corero?
The DDoS protection features are valuable.
What needs improvement with Corero?
Corero needs to improve its application DDoS prevention capabilities and user behavior detection features.
What is your primary use case for Corero?
I use Corero for network DDoS protection projects. It is particularly effective in providing protection against netwo...
 

Comparisons

 

Also Known As

Cloudflare DNS
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Overview

 

Sample Customers

Trusted by over 9,000,000 Internet Applications and APIs, including Nasdaq, Zendesk, Crunchbase, Steve Madden, OkCupid, Cisco, Quizlet, Discord and more.
DDoS defense solution trusted for more than 200 service providers, online gaming, and enterprises including; Bungie, Comcast, KDDI Corporation, Leaseweb, Microsoft Azure, NTT Docomo, Softbank, Turkcell Superonline, Verizon and more.
Telesystem, Jagex, Hivelocity, Los Angeles Dedicated, Netrics hosting, Hyve, Zacks Investment Research, Dynamic Business Systems, G4BOX INC., GamersFirst, Fastmetrics, San Miguel County
Find out what your peers are saying about A10 Thunder TPS vs. Corero and other solutions. Updated: July 2025.
865,295 professionals have used our research since 2012.