Imperva Web Application Firewall vs NetScaler comparison

Imperva and NetScaler are both solutions in the Web Application Firewall (WAF) category. Imperva is ranked #4 with an average rating of 8.9, while NetScaler is ranked #12 with an average rating of 8.3. Additionally, 97% of Imperva users are willing to recommend the solution, compared to 91% of NetScaler users who would recommend it.

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Executive SummaryUpdated on Jan 1, 2025

NetScaler and Imperva Web Application Firewall compete in application protection. User feedback indicates NetScaler holds an edge due to favorable deployment flexibility and robust support, while Imperva is recognized for its superior security features despite higher costs.

Features: NetScaler offers flexible deployment models, including the TriScale architecture, SSL offload capabilities, and global server load balancing to aid in cost management. Imperva provides inline transfer mode, strong threat intelligence, and extensive web application security for comprehensive protection.

Room for Improvement: NetScaler can enhance feature innovation, improve configuration capabilities, and manage frequent disruptive updates. Imperva could benefit from reducing its pricing and simplifying its licensing structure, alongside enhancing its configuration interface and management processes.

Ease of Deployment and Customer Service: NetScaler boasts adaptable deployment across on-premises and hybrid clouds but requires simplified configuration management. Its customer service sees mixed reviews in terms of responsiveness. Imperva is straightforward in cloud deployment but less so on-premises, with customer support noted for lack of responsiveness and high pricing complexities.

Pricing and ROI: NetScaler's pricing is considered high and complex, yet its ROI remains favorable due to management cost savings. Imperva's pricing is premium, justified by advanced security features, with its ROI seen as worthwhile by various users, though perceptions of cost-effectiveness differ.

To learn more, read our detailed Imperva Web Application Firewall vs. NetScaler Report (Updated: April 2025).

Buyer's Guide

Imperva Web Application Firewall vs. NetScaler

April 2025

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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

Featured Reviews

Spencer Malmad

Owner at Tech Exchange

It's easy to set up because you point the DNS to it, and it's working in under 15 minutes

Cloudflare is highly scalable. Cloudflare is a system with a web portal that the end users like me see. It's a console where we can adjust the DNS, caching, and security features all in that console. Cloudflare owns thousands of servers across the world that cache the data. It's a powerful solution. When clients sign up for Cloudflare, they're getting this monster content delivery network, security, and a web application firewall in one. It's all rolled into one, and it's massive. Unless you have your website hosted on a massive hosting provider, there's no way that you can deliver the amount of data that Cloudflare can provide to the end users. If you have static content, there's no way that you can ever match what Cloudflare can do. Obviously, there are competitors to Cloudflare that do the same, but I'm saying other types of solutions. Let's say you go with F5. Great, that's on-prem. That's in your colo. You can't deliver as much data to the internet as you can with a CDN. You don't have to spend $20,000 on a net scaler, F5, or whatever Cisco's selling now. You don't have to buy that. You pay them $50 a month or $150 a month. It's totally worth it because even in five years, you'll never get the performance value, not just the actual ROI. You have to consider how much throughput you can get with Cloudflare.

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Abdullah Jin

Principal Cyber Prevent and Defense Engineer at a comms service provider with 1,001-5,000 employees

Offers bot protection and DDoS Protection and protects public-facing portals

Support is one thing I wish Imperva could improve. They follow the phone model and keep rotating you from one customer service person to another. The layer one support isn't very clear about the workings of the product. My feedback is primarily about Imperva Cloud, not on-premise. On-premise is a whole new story. Support is the issue for Imperva Cloud. It's also a bit pricey. It's a premium service and very expensive. The licensing model is not very straightforward. Every feature is priced separately, and to enjoy maximum protection, you'll have to spend a lot of money. The licensing model is a bit complex, and each feature is very pricey. For example, API security and web application protection are two separate license packages.

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VivekKumar10

Co-Founder at Virajo

Good stability and offers various valuable features like WAF

Pricing is one area for improvement. It's on the higher side because NetScaler is a premium product used for over 70% of internet traffic worldwide. However, price is not the only concern. Manageability and adaptability can also be challenging for end customers, who may require the assistance of experts like us to deploy and manage the product effectively. Although this is good for us as partners, it can limit the product's appeal to customers who prioritize ease of use. Moreover, having some GUI-based tools for log management and troubleshooting would be helpful and make it easier for customers to manage and troubleshoot their databases. For the future release of Citrix NetScaler, I would like to see better pricing, as well as improved manageability and log management features. Another thing is if a problem occurs, we have to rely on the central support system. We need to collect the log and send it back to support for analysis, and then Citrix support will provide the solution. It would be much easier to troubleshoot if something is handy, such as a web portal or a common platform where customers can upload logs and resolve some of the issues automatically.

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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

"The solution automatically detects and responds to certain types of traffic based on geolocation."

"From what I've seen so far, there are no negatives to report as of yet"

"The attacker won't have details since my public IP is anonymous. It offers us good privacy."

"The features of Cloudflare were found to be more beneficial and led to the decision to utilize it over other options."

"The simplicity of the overall dashboard makes it a great product for a user like me who has less understanding of the internet than a developer or other more technical people. It gives me peace of mind. I also love the easy customization of the Page Rules."

"The most valuable feature of Cloudflare DNS is its global reach and it is always evolving."

"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."

More Cloudflare pros

"The tool's profiling feature maps all the web application directories and related components on the profile directory. It has improved the security of my client's website applications."

"The solution is stable."

"The most valuable features of the Imperva Web Application Firewall are DDoS, malware, and the other malicious threat prevention it provides. Additionally, third-party integration is available. You can forward the log for further analysis."

"It has fewer false positives"

"Learning mode and custom policies are helpful features."

"We can prevent attacks or issues even before they happen."

"Data masking is the most valuable feature of this solution."

"The solution is cloud-based and offers us good uptime. It has combined web and API security. Therefore, with one license, you access both application security and also API security."

More Imperva Web Application Firewall pros

"I like app flows and custom flows. They integrate with multiple flows."

"This solution increases the backend network service performance, which is one of the things that we like the most."

"The stability is good. If there is a problem, the load will be shifted to other sites automatically, which has been a good experience for us."

"My customers have told me that the performance of this solution is good."

"The most valuable features are the VDA Delivery, Gateway Fort, and the load balancing."

"Helped us a lot with load balancing."

"The feature that I have found most valuable is its load balancing."

"Load Balancing and SSL offloading are key features."

More NetScaler pros

Cons

"The solution could work at being less expensive. It costs a lot to use it."

"They lack a good way to manage DNS as a company, since everything is relegated to single account logins until you get to the higher levels. They have come out with a paid feature to remedy this, but I have not had a chance to fully review it yet to know if it fixes the access problem."

"The tool needs to improve caching of servers. The product needs to include PFX certificate as well."

"The integration of LLMs on the dashboard is something that is needed in the tool."

"It would be beneficial for us if Cloudflare could offer a scrubbing solution. This would involve taking a snapshot of my website and keeping it live during a DDoS attack, ensuring uninterrupted service for our users. DDoS attacks are typically short in duration, and having Cloudflare maintain the site's availability from its secure network would enhance the overall user experience. I would appreciate it if Cloudflare could consider implementing this feature. Many organizations already utilize similar capabilities in their CDN platforms, where a static snapshot of the web page is displayed during DDoS attacks. In terms of features, Cloudflare needs to enhance its resilience and stay more focused on adopting new technologies. For instance, solutions like F5 XC Box, Access Solution, and Distributed Cloud Solution have impressive features, and Cloudflare should strive to match and exceed those capabilities. There's a need for improvement in areas like AI-based DDoS attacks and Layer 7 WAF features. Cloudflare should prioritize enhancements in areas such as behavioral DDoS and protection against SQL injection attacks, considering the prevalent trend of public exposure to the internet for business reasons. Overall, Cloudflare needs to invest more in advancing its feature set."

"It should have easier documentation for the configuration. It's very technical and people who aren't technical should also be able to do the configuration."

"There might be helpful if there was some web application firewall feature."

"The reporting can definitely be improved to offer a lot more explanation on something that may have happened or has actually happened."

More Cloudflare cons

"They recently separated the WAF and the DAM management gateways in order for each of these to be managed from different areas, so I believe it now requires additional investments for what was previously a single complete solution."

"The user interface could be better."

"Imperva Web Application Firewall is a good system, but we found that the visibility of the diverse-path server, e.g. where the traffic is coming from, the different IPs, etc., needs improvement."

"It is complicated to integrate the solution's on-cloud version with other platforms."

"The process to upgrade from one version to another can be a lot simpler than it is currently."

"The reporting is missing some features, such as: only two export formats, and the time period does not include the last day, week, year."

"The UI interface needs improvement."

"I loved the approach of the cloud. The cloud has a lot of new features, like advanced web protection and DDoS protection. If those could also be on-boarded onto the on-prem versions, that would be ideal. They need to pay attention to both deployment options and not just favor one."

More Imperva Web Application Firewall cons

"Currently, it is not easy to use the configuration capabilities of the product."

"We had some bugs in the previous firmware. These were not big issues, but more testing on the firmware would be key to happier customers."

"Its GUI should be improved. Its CLI is powerful, but GUI needs more features."

"This is an expensive solution."

"The technical support could be better. Whenever I contacted support, I rarely got the solution that we needed. And most of the time, I finished fixing the problem by looking on the internet or by finding documents about the problem on Google."

"I feel that Citrix NetScaler's customer support needs to improve."

"The security is okay, but the monitoring and reporting need improvement."

"The solution's pricing is a big concern and should be improved."

More NetScaler cons

Pricing and Cost Advice

"In terms of licensing costs, we don't pay for licensing for Cloudflare. We only establish communication, then for peering, Cloudflare takes care of the cross-connection in different data centers."

"The tool is a premium product, so it is very expensive."

"The cost primarily depends on the size of the organization."

"That is one of the great features. I was able to access the majority of the features and services for free."

"I give the price a five out of ten."

"The pricing for the service is reasonable, neither excessively cheap nor prohibitively expensive. It aligns well with the value of their solution."

"We are using the free version."

"It's a premium model. You can start at zero and work your way up to the enterprise model, which has a very high pricing level."

More Cloudflare pricing and cost advice

"The price is high compared to other solutions like FortiWeb."

"Imperva Web Application Firewall's pricing is expensive."

"The price of this solution is a little bit high compared to competitors."

"The tool is expensive."

"It is very costly, but the return on investment is very high. Its cost was around $70,000, and we got it back in just six months."

"The cost of this solution depends on the platform."

"Imperva Web Application Firewall price is higher compared to other solutions. However, everything is included in the price."

"Licensing can range from one to twenty thousand dollars annually. Additionally, some features, including software support, require an annual subscription as well."

More Imperva Web Application Firewall pricing and cost advice

"Our licensing fees including technical support are approximately $3,500 USD."

"I do not have any experience with the pricing of the product."

"We are quite happy with price. It's not too high."

"After deployment, Citrix Netscaler shifted to a subscription-based license scheme for support, which is slightly more expensive."

"The solution is expensive compared to one of its competitors."

"Citrix Web App and API Protection are in the middle when we talk about pricing and licensing"

"We have been evaluating F5, Citrix, and other ADC products. Citrix is the most expense of all of them."

"It is true that it is a bit pricey compared to newer technologies coming to the market. For example, A10 is a load balancer that does everything that Citrix can and it does a lot more than what NetScaler does when it comes to the security space, and their prices are so cheap. Every box comes with its own license and support built into it. When you compare that with NetScaler, you have to buy licenses separately, you have to buy a support agreement that is going to be separate. A small NetScaler, even if it is a VPX which is a virtual server, could cost you close to $150,000 to $200,000 dollars. So the pricing is really high."

More NetScaler pricing and cost advice

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Top Industries

By visitors reading reviews

Educational Organization

19%

Computer Software Company

13%

Comms Service Provider

Financial Services Firm

17%

Computer Software Company

13%

Insurance Company

Manufacturing Company

Computer Software Company

15%

Educational Organization

14%

Financial Services Firm

11%

Government

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...

See all answers

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...

See all answers

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.

See all answers

Which is the best DDoS protection solution for a big ISP for monitoring and mitigating?

My recommendation is Imperva.

See all answers

Is Citrix ADC (formerly Netscaler) the best ADC to use and if not why?

For ADC, any ADC can do a good job. But in case if you want to add WAF functionality to the same ADC hardware you hav...

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DDoS solutions: Any other solutions to consider aside from Radware DDoS Protection Service and F5 Silverline DDoS Protection?

You can have a look to Imperva Cloud WAF, the anti-DDoS mitigation is under 1s and works very well. I observed a lot ...

See all answers

What do you like most about Citrix ADC?

The most valuable feature for us is the application firewalling in Citrix NetScaler, ensuring only valid traffic ente...

See all answers

What is your experience regarding pricing and costs for Citrix ADC?

After deployment, Citrix Netscaler shifted to a subscription-based license scheme for support, which is slightly more...

See all answers

What needs improvement with Citrix ADC?

Citrix NetScaler is a robust product, but mastering it requires significant learning and training due to its complexi...

See all answers

Comparisons

Quad9 vs Cloudflare

Compared 50% of the time

Akamai vs Cloudflare

Compared 4% of the time

Azure Front Door vs Cloudflare

Compared 4% of the time

Azure DNS vs Cloudflare

Compared 3% of the time

Amazon Route 53 vs Cloudflare

Compared 2% of the time

More Cloudflare Competitors

Microsoft Azure Application Gateway vs Imperva Web Application Firewall

Compared 16% of the time

F5 Advanced WAF vs Imperva Web Application Firewall

Compared 12% of the time

Azure Front Door vs Imperva Web Application Firewall

Compared 11% of the time

AWS WAF vs Imperva Web Application Firewall

Compared 10% of the time

F5 Distributed Cloud Services vs Imperva Web Application Firewall

Compared 2% of the time

More Imperva Web Application Firewall Competitors

Microsoft Azure Application Gateway vs NetScaler

Compared 11% of the time

HAProxy vs NetScaler

Compared 11% of the time

Fortinet FortiADC vs NetScaler

Compared 9% of the time

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

Compared 8% of the time

More NetScaler Competitors

Product Reports

Buyer's Guide

Cloudflare

April 2025

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Buyer's Guide

Imperva Web Application Firewall

April 2025

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Buyer's Guide

NetScaler

March 2025

Download NetScaler product report

Also Known As

Cloudflare DNS

No data available

Citrix ADC, Citrix NetScaler VPX, NetScaler Console, NetScaler Web Application Firewall

Overview

Cloudflare is a highly-regarded Content Delivery Network (CDN) and a Distributed Denial-of-Service (DDoS) protection solution. The robust global connectivity cloud platform that is Cloudflare ensures users are able to connect to the Internet quickly, securely, and reliably. Cloudflare is one of the world's largest networks in the marketplace today. Using Cloudflare, businesses, educational entities, NGOs, vloggers, bloggers, and anyone else with an internet presence can experience more secure, faster websites and applications.

Currently, there are millions of Internet locations on Cloudflare, and the Cloudflare network
continues to grow every day by the thousands. The solution is able to fulfill the requests for
millions of websites seamlessly and serves on average 45 million HTTP requests per second.

Cloudflare has safe, secure data centers in close to 300 cities worldwide to ensure every
client request is filled as quickly as possible. It is Cloudflare’s edge network that makes this
possible by keeping content and other services as close to each client as possible, so the
information requests are always only seconds away.

Many organizations that work in democracy, civil society, human rights, or the arts are able to
access Cloudflare's highest levels of protection for free via Project Galileo. Additionally, official
election websites can be secured from hacking and fraud through Cloudflare’s Project
Athenian, also at no additional cost.

Cloudflare can also help organizations of all sizes develop a robust zero-trust strategy to
ensure the highest levels of productivity and profitability. Employees, stakeholders, and end users have a greater level of satisfaction and overall improved user experience, which can, in
turn, result in higher revenues and overall ROI. Zero-trust and BYOD (bring your own device)
access ensure end users and employees always have the best resources and technology
available to them at all times.

Cloudflare benefits

Cloudflare has many benefits. Some of its most valuable benefits include:

- Faster load times

- Robust DNS security

- Intuitive cloud Web Application Firewall (WAF)

- Free universal SSL

- Image enhancement

- Automatic browser caching

- Next-generation cloud load balancer

- Accelerated Mobile Pages (AMP)

- Rate limiting

- Minification

- Zero-trust capabilities

- Cost-effective

- Reduced carbon footprint

Reviews from real users

“Many websites require an SSL certificate because they sell stuff and want SSL. Cloudflare
comes with an SSL certificate built in. It's automatic. You sign yourself up for Cloudflare, and
an SSL certificate automatically protects your website. If you have a connection between your
website and your host, the server, Cloudflare, and the host, you don't necessarily need a
certificate.” Spencer M., Owner at Tech Exchange

“What I like best about Cloudflare is that my company can use it to trace and manage
applications and monitor traffic. The solution tells you if there's a spike in traffic. Cloudflare
also sends you a link to check your equipment and deployment and track it through peering,
so it's a valuable tool.” Daniel P., Network Engineer at Ufinet

“The most valuable feature of Cloudflare is the GUI. You are able to control the solution very
well through the interface. There is a lot of functionality that is embedded in the service.” PeerSpot user, Competence Center Manager at a tech services company

Cloudflare

Imperva Web Application Firewall is a versatile solution that protects web applications and databases from various attacks, including DDoS, cross-site scripting, and SQL injection attacks. It offers data security, availability, and access control and can be deployed on-premises or on the cloud.

The solution has good security against web attacks and offers advanced bot protection, API security, and mitigation features. Imperva WAF is easy to configure and deploy; it has good customer service and an excellent user interface.

Imperva

One platform for a consistent application delivery and security experience because nobody has time to learn multiple systems to manage ADC deployments. NetScaler is built with a single code base using a software-based architecture, so no matter which ADC form factor you choose — hardware, virtual machine, bare metal, or container — the behavior will be the same.

NetScaler

Sample Customers

Trusted by over 9,000,000 Internet Applications and APIs, including Nasdaq, Zendesk, Crunchbase, Steve Madden, OkCupid, Cisco, Quizlet, Discord and more.

BlueCross BlueShield, eHarmony, EMF Broadcasting, GE Healthcare, Metro Bank, The Motley Fool, Siemens

ABB Schweiz, Aer Lingus, AIDS Healthcare Foundation, Amnet Technology Solutions, Aramex International, Ascenty, Atos, Autodesk

Buyer's Guide

Imperva Web Application Firewall vs. NetScaler

April 2025

Free Report: Imperva Web Application Firewall vs. NetScaler

Find out what your peers are saying about Imperva Web Application Firewall vs. NetScaler and other solutions. Updated: April 2025.

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