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OPNsense vs Palo Alto Networks CN-Series 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

OPNsense
Ranking in Firewalls
7th
Average Rating
8.2
Reviews Sentiment
6.6
Number of Reviews
47
Ranking in other categories
No ranking in other categories
Palo Alto Networks CN-Series
Ranking in Firewalls
37th
Average Rating
9.6
Reviews Sentiment
7.4
Number of Reviews
2
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of October 2026, in the Firewalls category, the mindshare of OPNsense is 7.2%, down from 11.1% compared to the previous year. The mindshare of Palo Alto Networks CN-Series is 0.5%, up from 0.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Firewalls Mindshare Distribution
ProductMindshare (%)
OPNsense7.2%
Palo Alto Networks CN-Series0.5%
Other92.3%
Firewalls
 

Featured Reviews

PM
IT Manager at a comms service provider with 201-500 employees
Open-source firewall has provided affordable real-time protection and secure remote access
In my opinion, OPNsense could improve by incorporating either an open side of wireless management or a way that you can also manage your interconnected devices. You could easily have SNMP, Simple Network Management Protocol, incorporated in it so that you can easily manage the devices and easily get the information about the devices that you are managing. Additionally, the inclusion of Pi-hole would allow you to create an ad-free network instead of adding it on a separate device. I would prefer that incorporated into OPNsense, or if it is there, I would appreciate guidance on how to use it.
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…

Quotes from Members

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

Pros

"We have found pretty much all the features of the solution to be valuable."
"Offering this solution has provided some of our clients with firewall protection and UTM, which basically just protects them from the internet."
"With the VPN solutions, it is possible to cover up all the scenarios which we have."
"Its user interface is one of the best interfaces I have used."
"The initial implementation process is simple."
"OPNsense impacts my projects and home network positively because its cost-effectiveness is perfect for lab and enterprise setup without expensive licensing, and the flexibility, easy VLAN and DMZ configuration supports different zones such as web servers, mail servers, and log servers."
"The interface and the dashboard are the most valuable features of this solution."
"The feature I find most valuable, is that the program helped me to realize all the requested functionality that was needed."
"The stability of Palo Alto Networks CN-Series is excellent."
"The app inspection is very helpful for network security."
 

Cons

"There is room for improvement in SSL inspection."
"You will need additional training before you can actually start to use it."
"The monitoring is a little complicated and I have tried to use a plug-in, but it's quite complicated to configure."
"My mark for OPNsense technical support is a four for the free version since they do not care when they realize you are using the free version; they just ghost on you."
"The support for OPNsense is good because we have documents available on the internet. The support could improve a little."
"When using the solution at the beginning was difficult. There was a steep learning curve."
"I think the most important thing is that it should be easily accessible, but currently, that doesn't seem to be the case. We need a hardware platform that's based on common standards and open computing principles, which would be like a commodity and benefit us greatly."
"An area for improvement in OPNsense is the hardware, which needs to be updated more frequently. DNS blocking is another good feature I want to be added to the solution. pfSense has a peer-blocking feature that I also want to see in OPNsense."
"Palo Alto Networks CN-Series could improve on its pricing as it is quite expensive."
"I'd like to see more IOPs features."
 

Pricing and Cost Advice

"I would rate the pricing a nine out of ten, especially considering the availability of a free community edition."
"There are no licensing costs for OPNsence."
"OPNsense is a well known open-source tool."
"The price of OPNsense is good."
"It's not expensive."
"OPNsense is open source software so at this time it is free for us to use."
"It is a free solution, and when you compare it to alternatives like FortiGate, which is quite powerful but also costly, the value becomes evident."
"I would rate the pricing three out of ten."
Information not available
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Top Industries

By visitors reading reviews
Comms Service Provider
18%
Manufacturing Company
8%
Computer Software Company
8%
Outsourcing Company
7%
University
11%
Construction Company
9%
Financial Services Firm
9%
Manufacturing Company
9%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business32
Midsize Enterprise6
Large Enterprise8
No data available
 

Questions from the Community

What is the difference between PfSense and OPNsense?
Two of the most common and well recognized firewalls, PfSense and OPNsense both support site-to-site IPsec VPN and client, Open VPN and client, and PPTP client. Both also have intrusion detection a...
What is your experience regarding pricing and costs for OPNsense?
Setup cost is almost zero as one can simulate the whole environment using open source version. Pricing seems fair enough. Open source license allows a beginner to have a complete firewall solution ...
What needs improvement with OPNsense?
When I talk about VPN, I am not completely satisfied with the VPN functions of OPNsense. What I have received so far is that sometimes the VPN route caches for some time and sometimes I want to cha...
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...
 

Overview

 

Sample Customers

1. Deciso B.V. 2. iXsystems, Inc.  3. EuroBSDCon  4. Netgate  5. Claranet  6. Voleatech  7. Open Systems AG  8. Securebit AG  9. Proxmox Server Solutions GmbH  10. AVM Computersysteme Vertriebs GmbH  Additional customers include: T-Systems International GmbH, Deutsche Telekom AG, Vodafone GmbH, 1&1 IONOS SE, OVHcloud, Hetzner Online GmbH, Strato AG, PlusServer GmbH, Host Europe GmbH, United Internet AG, 1&1 Versatel Deutschland GmbH, QSC AG, Bechtle AG, Cancom SE, Computacenter AG & Co. oHG, T-Systems Multimedia Solutions GmbH, Atos SE, Capgemini SE, Accenture plc, IBM Corporation, Hewlett Packard Enterprise Company, Cisco Systems, Inc.
Information Not Available
Find out what your peers are saying about OPNsense vs. Palo Alto Networks CN-Series and other solutions. Updated: September 2026.
915,341 professionals have used our research since 2012.