NetScaler vs R&S Web Application Firewall (DenyAll) comparison

NetScaler and Rohde & Schwarz are both solutions in the Web Application Firewall (WAF) category. NetScaler is ranked #12 with an average rating of 8.3, while Rohde & Schwarz is ranked #39. Additionally, 91% of NetScaler users are willing to recommend the solution, compared to 100% of Rohde & Schwarz users who would recommend it.

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Executive Summary

We performed a comparison between NetScaler and R&S Web Application Firewall (DenyAll) based on real PeerSpot user reviews.

Find out what your peers are saying about Amazon Web Services (AWS), F5, Microsoft and others in Web Application Firewall (WAF).

To learn more, read our detailed Web Application Firewall (WAF) Report (Updated: March 2025).

Buyer's Guide

Web Application Firewall (WAF)

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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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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SeydouSidibe

General Manager at 3R Technologie

Geo-localization and IP reputation help to keep our clients secure and more available

The area that should be improved is licensing. When using an active/passive cluster, we have to pay 70% of the master appliance and license for the passive server that does not work. Since we know that only one server works at a time, we should pay only one license for the appliances and for the support as well. In my opinion, this has to be improved. If possible, the client software should be a web application instead of downloading software for the management. This can avoid login problems when they update or patch.

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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 offers the flexibility to control configuration rules."

"DDoS attacks target unprotected machines. Cloudflare detects and stops these attacks using internal systems. It identifies incoming DDoS attacks, issuing challenges or blocking them immediately."

"The overall experience with Cloudflare is positive, with a rating of eight out of ten."

"The UI is good."

"Even when there is a high load on our servers, Cloudflare is able to cache the data and serve it to users, ensuring they can still access the website."

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

"The technical support is good."

"The most valuable features of the solution are performance and security."

More Cloudflare pros

"The maintenance of the solution is not complex."

"Content Redirection and SSO integration with Citrix XenApp/XenDesktop. The GUI was wonderful."

"The GSLB feature allows us to move services between data centers. We can do this in either a planned or unplanned manner. We have experienced service provider outages at our primary data center and GSLB will kick in to automatically modify DNS records to point to a secondary data center (active/passive). We also make use of GeoIP information to point clients to the closest data center for accessing applications."

"High availability, performance, and security are the main pillars. It enhances the security for accessing the applications."

"It is a stable solution. It crashed only once, four years ago...There is a return on investment using the solution."

"I can turn on features without actually owning a license. I can test them out, I can use them for a while, and then I can be licensed up. That's awesome. I don't have to have a license immediately before I can start to deploy things rapidly, rapid deployment is a plus."

"I find all of it to be valuable, because of the flexibility that is built into this product."

"It is a very stable solution."

More NetScaler pros

"The three most valuable features that I noticed are the geo-localization of the user, the IP reputation, and the compartmental analysis."

Cons

"Even if I wanted to, I wouldn't be able to buy Cloudflare in my country."

"The solution could use more analytics on the backend to give us more insights into everything. More reports would be helpful."

"There should be a specific price list for enterprise-level customers."

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

"For the free and Pro plans, Cloudflare could use a simple bot to provide information to users. This would improve support, especially for less advanced users who utilize the free components."

"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."

"If they improve on the placement of their data centers, it would be better. I'm living in a remote area. I would like to connect to them without any kind of lag."

"The timing aspect can lead to it being considered overpriced. This is a particular concern we have with Cloudflare, as they may struggle with accurately detecting the client."

More Cloudflare cons

"It was challenging explaining to customers that it's no longer NetScaler but ADC, and now it's not just ADC but also the rebranding from NetScaler."

"The setup was not simple."

"The configuration is complex, and only one or two people know how to assist when problems arise."

"The technical support could be improved. They do not respond or assist customers in a timely manner."

"They can improve the scalability and the multi-tenancy feature. We recently tried to configure an authentication, and we ran into some issues while using the web-based GUI. It was very slow when you log in with your credentials in the web-based GUI. Each time we clicked on the menu, it tried to do the authentication. It works properly in the console."

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

"I would like to see support for scripting, like "iRule", which gives you the option to implement any configuration which is not available out of the box."

"Overall the price of Citrix ADC could be more competitive."

More NetScaler cons

"The area that should be improved is licensing."

Pricing and Cost Advice

"Cloudflare's pricing is not much higher and is good for middle-level organizations."

"The product's pricing is minimal compared to other products."

"The price of the solution is expensive."

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

"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."

"A free version of the solution is available."

"The product's pricing is cheap."

"We don't have any issues with the price."

More Cloudflare pricing and cost advice

"We get value for money. Its price is fair. I don't think it is overpriced."

"The licensing costs for this solution vary depending on which model is being used."

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

"The solution is undoubtedly very good, but it is expensive."

"F5 BIG-IP is much more expensive than Citrix ADC. For example, If we choose two platforms, Citrix ADC, 3000 version, and we choose F5, F4200 version. F5 BIG-IP has connections, timers, and throughput similar to Citrix ADC, but the price is very expensive."

"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 price for Citrix ADC here in Mexico was good, when you compare it with F5 and Radware."

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

More NetScaler pricing and cost advice

Information not available

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Top Industries

By visitors reading reviews

Educational Organization

17%

Computer Software Company

14%

Comms Service Provider

Financial Services Firm

Computer Software Company

15%

Educational Organization

13%

Financial Services Firm

11%

Government

No data available

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

No data available

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

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...

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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

Which Web Application Firewall (WAF) would you recommend? R&S or Imperva?

Imperva is a strong choice, given their security focus and ongoing R&D into the product in areas such as bot mana...

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

Imperva DDoS vs Cloudflare

Compared 2% of the time

More Cloudflare 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

VMWare Avi Load Balancer vs NetScaler

Compared 8% of the time

More NetScaler Competitors

No data available

Product Reports

Buyer's Guide

Cloudflare

April 2025

Download Cloudflare product report

Buyer's Guide

NetScaler

April 2025

Download NetScaler product report

Buyer's Guide

Web Application Firewall (WAF)

March 2025

R&S Web Application Firewall (DenyAll) report

Download R&S Web Application Firewall (DenyAll) product report

Also Known As

Cloudflare DNS

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

Rohde & Schwarz Web Application Firewall, R&S WAF, DenyAll Web Application Security

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

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

Beyond the basic capabilities of traditional negative and positive security models, DenyAll’s scoring mechanism, user behavior tracking and advanced detection engines deliver best-of-breed security that won’t let you down. None of our customers have made the headlines with security breaches.

Web Services and automated machine-to-machine communications support business processes, internal and with ecosystem partners that are often critical. DenyAll makes it easy to optimize and secure these XML-based data flows, with capabilities found in no other WAF or SOA Gateway.

Rohde & Schwarz

Sample Customers

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

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

Information Not Available

Buyer's Guide

Web Application Firewall (WAF)

March 2025

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