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: March 2025).

Buyer's Guide

Imperva Web Application Firewall vs. NetScaler

March 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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DEMİRHAN ÇAVUŞOĞLU

Cloud Consultant at Migros Ticaret A.Ş.

A tool for centralized management including inventory and sales tracking

Citrix ADM has the ability to implement policies to tighten security. For instance, you can restrict access to your network from outsiders or lack necessary security measures such as antivirus programs. Additionally, there's the Delivery Controller, which allows for comprehensive monitoring and management tasks such as remote restarts, maintenance, and registration. Another essential component is the Director, which provides detailed insights into sessions, including identifying session failures, connection issues, user lockouts, etc. It presents a list of problems to address, enabling you to click on them and resolve them efficiently.

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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

"Generally, I am satisfied with this product."

"We're using dynamic components to build flexible pages to create and manage Git merge requests for code and reviews."

"Centralized, full-featured DNS."

"Cloudflare has many features."

"When using services like Heroku, Cloudflare is very useful for CNAME flattening. I also use it for their end-to-end SSL with TLS authentication on nginx for securing servers."

"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."

"The tool is user-friendly."

"The UI is good."

More Cloudflare pros

"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."

"The solution is very scalable. It is one of the most important features. You can also expand resources and features as well."

"The solution can be configured in just a couple of minutes."

"Protection is the best solution since it has profile functionality."

"The most valuable features of the Imperva Web Application Firewall are performance and flexibility. We can extend or customize the box itself."

"The configurability of the tools and the ease of operation to be the most valuable feature of Imperva."

"It has threat intelligence and we are using Incapsula. With threat intelligence, we can separate HTTP and HTTPS traffic. We can use Incapsula to send all the threat intelligence to the WAF."

"Imperva monitors all traffic, even customer access, to the web application. Then, Imperva uses features like signatures to identify attacks like cross-site scripting or SQL injection."

More Imperva Web Application Firewall pros

"The load balancing and VPN features are most valuable. AAA authentication is also valuable."

"One of its most valuable features is fundamental load balancing, supporting both basic load balancing and database teams."

"HTTP analysis and action. We have a lot of custom web applications that sometimes require custom header insertions. Some of these custom apps are external and, via the content switching, we can use one IP and leverage various back-end web app servers."

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

"Content filtering, security layer, and application customization features are the most valuable."

"Global load balancing between data centers."

"If you need PCI-compliance and have high security requirements, WAF is the most valuable feature. If you need to monitor your load-balancing services with complex types of monitoring, make sure everything is alright, and load balancing is important, Content Switching and Monitoring features are the keys to your needs. If you want to provide a lot of static images or data, the Caching feature works best for you."

"Load Balancing and SSL offloading are key features."

More NetScaler pros

Cons

"We have noticed multiple instances where Cloudflare falsely indicates that our servers are down, even when there is no actual load on them. This makes it challenging for us to identify the exact issue."

"I think the APIs are a little bit hard for us to work with. The APIs could be more open so that we could integrate better with our SolarWinds or our monitoring solution."

"The documentation could improve for Cloudflare DNS."

"The analytics, basically the dashboard, doesn't have much to it."

"Support response time could be improved."

"There are some issues with the CDN services."

"Sometimes their more advanced caching tools can cause higher first-byte times and problems with JavaScript."

"One area of improvement is in the Access Rules. Hypothetically, if we wanted to block or challenge traffic outside of the United States, the only way to currently do that (as far as I know) is to enter every single country outside of the United States. That could be a labor intensive job. A solution could be to enable users to create a rule where traffic is only allowed within a certain country."

More Cloudflare cons

"Sometimes our web application firewall will slow down."

"It would be nice to have more security control over mobile applications so I would suggest adding more mobile security features. It would also be beneficial to see improvements in regards to interface bandwidth performance, CPU time, and RAM size. Learning capability of the device is quite weak."

"I am looking for more data enrichment. We should have the ability to add our own custom data to the system, to the live traffic."

"I don't really use it and therefore can't speak to areas of improvement."

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

"It would be useful if the solution used more intelligence in attack protection. For example, firewalls are to be dependent on the configuration, but if they could have some data science around it the solution would be even better. The profiling of the traffic, and making decisions surrounding that should be intelligence-based, instead of being based on the configuration of the firewall itself."

"Sometimes, support tickets don't get addressed quickly."

More Imperva Web Application Firewall cons

"Citrix NetScaler has been recently acquired by another company and the support has been negatively impacted, the solution is at its end of life. The support for the solution could improve. The sales team needs to be improved."

"An area for improvement would be the difficulty in finding information about standard licensing costs over the internet. They should provide some reference prices on the net to be quickly referred to."

"Citrix ADC can improve if it provides a more user-friendly interface and clear working protocols. Citrix is not working with classic RFC, it is working with Citrix RFC, which is not common in the world. If engineers of Citrix can provide us with more information on working with the classic IP networks it would be a benefit."

"Citrix is more expensive than Horizon."

"There is room for improvement regarding the pricing policy for Citrix offices."

"The reporting is not so good. They don't have an application to connect the logs."

"I am not an expert in this solution, but simplicity and user-friendly interfaces are crucial for me. I would appreciate advice from Citrix, particularly in the form of an interactive guide for API protection. It would be helpful if they could provide specific points and recommendations for cybersecurity, indicating areas that need attention or improvement. I find such interactive guidance valuable."

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

More NetScaler cons

Pricing and Cost Advice

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

"The solution is expensive when compared to other products but offers unlimited bandwidth."

"The product's pricing is cheap."

"The price of the solution is expensive."

"There are no additional costs beyond the standard licensing fees."

"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."

"I think the pricing is competitive. I think as far as licensing is concerned it's pretty straightforward because it's based on domain. It's just that sometimes domains could be tricky with some customers."

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

More Cloudflare pricing and cost advice

"The price of Imperva Web Application Firewalls is expensive compared to others."

"Everybody complains about the price of this solution."

"The solution's pricing is an issue."

"The pricing is somewhat expensive. It is actually a huge investment when compared to other countries."

"It's an excellent product, but it can be very costly."

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

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

"There is a license for this solution and we purchase the license annually with no additional fees."

More Imperva Web Application Firewall pricing and cost advice

"The licenses for this product are payable as a yearly subscription, and carry a high price-point. The subscription scheme is quite complicated, and costs will increase with each additional feature that is required, outside of the basic setup."

"The license for Citrix NetScaler is on an annual basis and it is reasonably priced."

"I rate the pricing an eight out of ten since it is expensive."

"I rate the tool's pricing an eight out of ten."

"For partners, NetScaler is not as expensive price-wise versus F5."

"The client pays for the Citrix NetScaler license annually."

"It is an enterprise solution. Thus, its costs are reasonable."

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

More NetScaler pricing and cost advice

See which vendors are best for you

Use our free recommendation engine to learn which Web Application Firewall (WAF) solutions are best for your needs.

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Top Industries

By visitors reading reviews

Educational Organization

21%

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

15%

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 BIG-IP Local Traffic Manager (LTM) vs Imperva Web Application Firewall

Compared 2% of the time

More Imperva Web Application Firewall Competitors

Microsoft Azure Application Gateway vs NetScaler

Compared 12% 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

March 2025

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Buyer's Guide

Imperva Web Application Firewall

March 2025

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Buyer's Guide

NetScaler

March 2025

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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

March 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: March 2025.

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