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Palo Alto Networks CN-Series vs Zscaler Cloud Firewall comparison

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Comparison Buyer's Guide

Executive Summary

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

Palo Alto Networks CN-Series
Ranking in Firewalls
38th
Average Rating
9.6
Reviews Sentiment
7.4
Number of Reviews
2
Ranking in other categories
No ranking in other categories
Zscaler Cloud Firewall
Ranking in Firewalls
37th
Average Rating
8.2
Reviews Sentiment
6.3
Number of Reviews
20
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of September 2026, in the Firewalls category, the mindshare of Palo Alto Networks CN-Series is 0.5%, up from 0.1% compared to the previous year. The mindshare of Zscaler Cloud Firewall is 1.0%, up from 0.4% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Firewalls Mindshare Distribution
ProductMindshare (%)
Zscaler Cloud Firewall1.0%
Palo Alto Networks CN-Series0.5%
Other98.5%
Firewalls
 

Featured Reviews

Ahmed_Shalaby - PeerSpot reviewer
Senior Cyber Security Engineer at Beta Information Technology
Application control excels and integration with monitoring system boosts efficiency
I am an integrator working with Palo Alto Networks CN-Series and Panorama. I have been involved with the implementation of Palo Alto Networks CN-Series The stability of Palo Alto Networks CN-Series is excellent. Application control is one of the most valuable features. Its monitoring capability…
Farzad Ebrahimi - PeerSpot reviewer
Senior Devsecops Cloud Cybersecurity Specialist at CGI
Cloud data protection has improved and automation reduces manual security tasks
The best features that Zscaler Cloud Firewall offers are that it is AI powered and automated. The automation especially reduces manual tasks as we used to have lots of manual activities for such services. Reporting is very powerful regarding the features of Zscaler Cloud Firewall. Zscaler Cloud Firewall has positively impacted my organization by increasing ROI, especially by reducing costs.

Quotes from Members

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

Pros

"The stability of Palo Alto Networks CN-Series is excellent."
"The app inspection is very helpful for network security."
"I like the ease of deployment and its flexibility. We don't need to deal with license, quotes, procurement, delivery, and installation. Everything is software-based, and it's very easy to operate."
"Zscaler is the Rolls Royce for this kind of solution."
"Includes advanced tech protection."
"Zscaler Cloud Firewall can be used for blocking all the malicious IPs, unauthorized IPs, unauthorized sites, and unsanctioned sites, such as when many users use PDF converters and can upload confidential data that we can detect and block."
"We like URL filtering, category filtering, and content filtering."
"Users are offered protection from anywhere on any device, with a full set of security features including firewall, IPS, web security, CASB, and DLP."
"The product’s firewall and VPN package are fantastic compared to any other solution."
"The initial setup is straightforward."
 

Cons

"Palo Alto Networks CN-Series could improve on its pricing as it is quite expensive."
"I'd like to see more IOPs features."
"There are some areas it could improve when it comes to blocking, we have to block some things manually. For example, if we block a top-level domain we have seen that the new IPs come through, the IPs are not blocked. There should be some more granular way of doing it. My only request is if you're blocking something at a top level, the sub-level sub-domains and all those other IPs should be blocked too automatically."
"When it comes to customer support, there is room for improvement in Zscaler's service."
"One area for improvement lies in their customer service, which feels less ideal for a premium product. The response and support are sometimes inadequate, which detracts from the overall experience of an otherwise impressive solution."
"Certain criteria need to be met if you want to scale this solution."
"Because it's on cloud, it doesn't allow application of extra settings."
"Apart from the issues associated with the product in areas like the DC performance issues and DC failover, Zscaler Cloud Firewall's IP should not have a proxy IP."
"The needed improvements involve scalability, which is something I wish they would address."
"It would be better if they improved their policy, package visibility, and flexibility while we're creating rules for inspection. It could also be cheaper or more things could be included in the basic package. In the next release, I would like better coverage in the Asia Pacific region and better quality of service."
 

Pricing and Cost Advice

Information not available
"The product is a bit expensive compared to the solutions offered by its competitors, like Palo Alto. There is a need to make yearly payments towards the license in charges associated with the product."
"There are licensing costs, and I would not say that it's a cheap vendor."
"It comes at a significantly reduced cost while ensuring control and effectiveness."
"The licensing is on a yearly basis. It is somewhere around 30 or 40 pounds per user for our organization."
"Zscaler is priced too high compared to the cost of Fortinet."
"It is not the most budget-friendly solution, but it's important to consider its overall value."
"On a scale from one to ten, where one is cheap, and ten is expensive, I rate the solution's pricing an eight out of ten."
"There are different subscription models available."
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Top Industries

By visitors reading reviews
University
11%
Construction Company
9%
Financial Services Firm
9%
Manufacturing Company
9%
Construction Company
10%
Manufacturing Company
9%
Outsourcing Company
8%
Comms Service Provider
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
By reviewers
Company SizeCount
Small Business5
Midsize Enterprise2
Large Enterprise13
 

Questions from the Community

What is your experience regarding pricing and costs for Palo Alto Networks CN-Series?
The pricing of Palo Alto Networks CN-Series is quite expensive, rating around eight on a scale of one to ten for cost.
What needs improvement with Palo Alto Networks CN-Series?
Palo Alto Networks CN-Series could improve on its pricing as it is quite expensive. The SD-WAN implementation using Panorama needs enhancement because it involves a specific plugin and configuring ...
What is your primary use case for Palo Alto Networks CN-Series?
I am an integrator working with Palo Alto Networks CN-Series ( /products/palo-alto-networks-cn-series-reviews ) and Panorama. I have been involved with the implementation of Palo Alto Networks CN-S...
Which lesser known firewall product has the best chance at unseating the market leaders?
Netscope, Zscaler if they continue route they are on now. FIrewalls needs great deal of automation on each end, datacenter and endpoint. In between you have branch office. So blending EPP and firew...
What is your experience regarding pricing and costs for Zscaler Cloud Firewall?
My experience with pricing, setup cost, and licensing was fine.
What needs improvement with Zscaler Cloud Firewall?
I think Zscaler Cloud Firewall can be improved by adding more features. The needed improvements involve scalability, which is something I wish they would address.
 

Overview

 

Sample Customers

Information Not Available
Zenith Live, Azure, Carlsberg Group
Find out what your peers are saying about Palo Alto Networks CN-Series vs. Zscaler Cloud Firewall and other solutions. Updated: September 2026.
913,806 professionals have used our research since 2012.