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OPNsense vs Zscaler Cloud Firewall comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Sep 16, 2024

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

Fortinet FortiGate
Sponsored
Ranking in Firewalls
2nd
Average Rating
8.4
Reviews Sentiment
7.2
Number of Reviews
318
Ranking in other categories
Software Defined WAN (SD-WAN) Solutions (1st), WAN Edge (1st)
OPNsense
Ranking in Firewalls
3rd
Average Rating
8.2
Reviews Sentiment
7.2
Number of Reviews
39
Ranking in other categories
No ranking in other categories
Zscaler Cloud Firewall
Ranking in Firewalls
24th
Average Rating
8.4
Reviews Sentiment
7.3
Number of Reviews
17
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of March 2025, in the Firewalls category, the mindshare of Fortinet FortiGate is 20.8%, up from 17.8% compared to the previous year. The mindshare of OPNsense is 12.8%, down from 17.3% compared to the previous year. The mindshare of Zscaler Cloud Firewall is 0.3%, up from 0.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Firewalls
 

Featured Reviews

EhabAli - PeerSpot reviewer
Efficient, user-friendly, and affordable
In the past, NSS Labs was utilized to test files and verify the numbers and datasheets. It would be beneficial to have an organization or testing lab that can verify the numbers in our datasheets since changes are frequently made, which can be inconvenient for review. For instance, when comparing different competitors such as Forcepoint, Palo Alto, and Check Point, the throughput or numbers in the datasheet may be lower than the actual numbers. Conversely, Fortinet typically reports very high numbers, but they cannot be replicated in the real world. Therefore, it would be advantageous for them to partner with a neutral testing organization such as NSS Labs to validate these numbers, thus providing more credibility and comfort to everyone regarding the accuracy of the datasheets. For the migration, everyone has a firewall in use and I am selling Fortinet. Typically, I am replacing another firewall. Previously, there was a tool available to convert configurations from one firewall, such as Palo Alto, to Fortinet, but this tool is no longer free. If it could be made free again, it would be very beneficial. This tool shows a lot of promise and is very good. Making it free would help many companies deliver their products in a more efficient and integrated way. It would also be more valuable to include the tool with the firewall package or license instead of having to pay extra for it. Paying extra puts more pressure on small companies to deliver the firewall and complete the configuration, especially if they have hundreds or thousands of policies. It's very painful to move through these policies line by line. The stability has room for improvement. When it comes to Secure SD-WAN, everything is fine. They are going the right way. SD-WAN is very promising. They can provide the SD-WAN solution separately, but they will not take this approach because even the smallest firewall can support the features, so there is no need to have a separate service or appliance. They are following the right steps, and there is nothing to be improved. Feature-wise, I'm really satisfied with the new release, and the features they have added. For now, it's fine.
Eddy Ramirez - PeerSpot reviewer
Good interface and firewall capabilities and overall easy to use
The security has improved as we can isolate the network. We can do attrition prevention via a tool that comes with the solution. We can have a VPN solution in place for those that work from home, outside the network, in a secure manner. We also like that it offers good authentication. It offers radius-based authentication, which has been useful for the company. The main platform is under the Open VPN firewall. The solution has high availability. When we have different ISPs, we can actually load balance those links or actually put some priority or even classify the traffic that might go into one ISP or another.
Bhaskar Rao - PeerSpot reviewer
Though it helps deal with web traffic or any malicious traffic, it needs to work on its DC performance issues
The product's initial setup phase is moderate in level, so it is neither very complex nor very easy. For the deployment, my company first needs to gather all the requirements of the users and the domain names and consider how many users there are in the company. In the implementation and planning part, my company needs to consider what kind of policies we will create while ensuring that the policies are created based on the requirements of the users. There is a need to segregate the users' requirements since there are separate departments in the company, like the HR department, sales department, IT department, and manufacturing department, so that our company can create policies depending on their requirements. On-site, if you want a GRE tunnel, our company can handle GRE tunnel traffic routing and Zscaler Cloud Firewall, after which Zscaler will take action based on the policies created by our organization. For the deployments and maintenance, a team of five members consisting of two managers and three engineers is required.

Quotes from Members

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

Pros

"Some of the valuable features are the firewall, IPS, web filter, and gateway capabilities. Additionally, it is easy to use and flexible."
"The license management is very valuable. You can get a new license each year, or you can enroll every two to four years. You can get the logs, and you will get the information on the risk in your network and the entire organization. With this information, you can take action on your actives, computers, or devices. You can bring your own device as an SSE."
"The product offers very good security."
"It is quite easy to handle."
"We purchased Fortinet because of the pricing, its functionality, because it met our requirements, and the total cost of ownership over five years was quite reasonable. In the market, Fortinet is rated quite well."
"The most valuable features of Fortinet FortiGate are the different types of profiling. It has been the most effective for me. The WAF and the antivirus profile are the most effective in network protection."
"The IPS is good. It protect my network from attackers."
"The most valuable feature is the VDOM, which allows the customer to have multiple firewalls in a single campus."
"URL blocking, Wireguard, Tail Scale, Engine Blocker, and VPN are the most valuable features for me."
"We have found pretty much all the features of the solution to be valuable."
"One of the most valuable features is the network checking. Additionally, the firewall and web filtering functionalities are highly useful."
"The most valuable features in OPNsense are reporting and visibility."
"It has firewall and VPN capabilities, which are very valuable features."
"The initial implementation process is simple."
"I mostly rely on the solution's network intrusion detection and prevention system, along with other systems, CMs, and log management."
"OPNsense is highly stable."
"The scalability is okay. We have around 2200 people using this solution."
"It helps a lot of companies to reduce their downtime. Also, It helps businesses in terms of being secured and protected from any threats."
"The initial setup is straightforward."
"Zscaler is still a very good product."
"The product’s firewall and VPN package are fantastic compared to any other solution."
"Zscaler provides effective protection against various cyber threats ensuring a safe environment"
"Most of the features that Zscaler has to offer, we will deploy."
"The solution offers good sandboxing."
 

Cons

"Fortinet needs to overhaul its documentation."
"The sniffing packets or packet captures, can be simplified and improved because it's a little confusing."
"The stability of Fortinet FortiGate could improve."
"There is room for improvement related to the logging and reporting aspect."
"Improvement is needed in the Web Filter quotas to restrict users with allocated quotas."
"From a reporting perspective, there's room for improvement. They're providing FortiAnalyzer through which one can get some enhancements, but the visibility and reporting still need slight improvement."
"The biggest "gotcha" is that if the client purchases what they call the UTM shared bundle, which has unified threat management on both, it's not as easy to manage if you have more than one firewall."
"There are some complex administration tasks in their administration portal. That needs to be improved."
"There are some add-ons that need enhancements to make management easier for users, especially the reporting features. Some reports don't show the level of detail I'm looking for, and I've had trouble installing certain add-ons, especially for Internet bandwidth shaping within my company."
"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."
"There are issues with stability and reliability."
"They should improve IPEs for security in the future."
"OPNsense showed me some problems when using it in different environments. The problem is integration with a virtual server."
"I would like to see better SD-WAN performance."
"Given that OPNsense plays a pivotal role as a firewall, safeguarding against various threats, having a reliable backup ensures uninterrupted protection even if unforeseen events impact the primary virtual machine."
"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."
"It would be nice to have some sort of a form factor, a physical form factor perhaps, or virtual machine that you could install on devices or on a cloud, and have some cloud computing."
"Instead of the standard license, they should certainly provide customers with the visibility to access and view the logs."
"The issue right now is probably that Zscaler is not providing web browser isolation. Another solution, Menlo, offers this. For one customer, we had to send traffic to Menlo to do the isolation for us. It was requested by the customer so that they could integrate any iframe. Zscaler needs to add this type of feature in their next release."
"They do not provide a few components that are fundamental to differentiate the products"
"Because it's on cloud, it doesn't allow application of extra settings."
"If I can get rid of Jetscaler, I will use Twingate for sure."
"The product could improve its integration with some legacy systems."
 

Pricing and Cost Advice

"Its price is reasonable. They have a clear pricing policy. It is not complicated by the number of VPN users at a time. We know what the price is. The yearly subscription for the security license is rather high, but it is all included for whatever number of users you have and the kind of functions you need."
"Setup costs and pricing depends on many variables, but it's mostly affordable."
"The price is fine."
"It is too expensive for us. My organization is very small, and we have a total of ten users. We have three internal users and seven external users. The FortiGate 100D series is too expensive for renewing the licenses."
"I think that the pricing is fair."
"By default, they give SD-WAN along with the firewall. They don't have separate licensing for the SD-WAN functionality. However, they have security licenses that are sold separately on a subscription basis. Customers can consume these security features to protect their users from internet traffic."
"For medium and enterprise organizations, FortiGate is more affordable."
"It is not a very costly product if you compare it with other products. The return on investment is also good. If you compare the return of investment and money that you are spending on this product with Palo Alto, Cisco, Check Point, and other solutions, the investment is very less. We are happy with this solution. The optional licenses are there, and you can choose which one you want and which one to avoid."
"The price of OPNsense is good."
"It is not an expensive product. Basically, I deployed it because it was the fastest solution to satisfy our needs in open source."
"I would rate the pricing three out of ten."
"OPNsense is a well known open-source tool."
"The solution is not expensive."
"It costs about $1000."
"Its pricing is unbeatable in comparison to other firewalls. You can have a small instance that could be €80 a month with the hardware underneath. Azure Firewall and FortiGate are out of the question at this price. If you are on a public cloud, you need the underlying infrastructure. Other than that, there is no additional cost. If you have it on-prem, you have to buy the server or the appliance. The hardware cost is replaced with the infrastructure cost in the cloud. You also have costs for the public IPs and underlying VMs, but that's not related to OPNsense. It would be the same for a FortiGate deployment on Azure. You need a FortiGate license, and you need the underlying infrastructure that scales up depending on your needs."
"It's a free solution."
"There is an annual license required for the use of the Zscaler Cloud Firewall."
"The licensing is on a yearly basis. It is somewhere around 30 or 40 pounds per user for our organization."
"There are licensing costs, and I would not say that it's a cheap vendor."
"It is expensive for small businesses."
"It is not the most budget-friendly solution, but it's important to consider its overall value."
"It comes at a significantly reduced cost while ensuring control and effectiveness."
"There are different subscription models 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."
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Top Industries

By visitors reading reviews
Educational Organization
22%
Computer Software Company
14%
Comms Service Provider
7%
Manufacturing Company
6%
Computer Software Company
16%
Comms Service Provider
13%
Government
7%
Educational Organization
6%
Computer Software Company
12%
Financial Services Firm
11%
Manufacturing Company
8%
Government
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
 

Questions from the Community

Which is the better NGFW: Fortinet Fortigate or Cisco Firepower?
When you compare these firewalls you can identify them with different features, advantages, practices and usage a...
What is the biggest difference between Sophos XG and FortiGate?
From my experience regarding both the Sophos and FortiGate firewalls, I personally would rather use FortiGate. I know...
What are the biggest technical differences between Sophos UTM and Fortinet FortiGate?
As a solution, Sophos UTM offers a lot of functionality, it scales well, and the stability and performance are quite ...
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 cl...
What do you like most about OPNsense?
What I like the most about OPNsense is that it offers an easy-to-use dashboard for device management and control.
What is your experience regarding pricing and costs for OPNsense?
I consider the pricing of OPNsense to be high when compared with other market products. However, as a free firewall p...
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, datac...
What do you like most about Zscaler Cloud Firewall?
The product’s firewall and VPN package are fantastic compared to any other solution.
What is your experience regarding pricing and costs for Zscaler Cloud Firewall?
The product is a bit expensive compared to the solutions offered by its competitors, like Palo Alto. There is a need ...
 

Also Known As

FortiGate 60b, FortiGate 60c, FortiGate 80c, FortiGate 50b, FortiGate 200b, FortiGate 110c, FortiGate, Fortinet Firewall
No data available
No data available
 

Overview

 

Sample Customers

Amazon Web Services, Microsoft, IBM, Cisco, Dell, HP, Oracle, Verizon, AT&T, T-Mobile, Sprint, Vodafone, Orange, BT Group, Telstra, Deutsche Telekom, Comcast, Time Warner Cable, CenturyLink, NTT Communications, Tata Communications, SoftBank, China Mobile, Singtel, Telus, Rogers Communications, Bell Canada, Telkom Indonesia, Telkom South Africa, Telmex, Telia Company, Telkom Kenya
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.
Zenith Live, Azure, Carlsberg Group
Find out what your peers are saying about OPNsense vs. Zscaler Cloud Firewall and other solutions. Updated: March 2025.
842,592 professionals have used our research since 2012.