Zscaler Cloud Firewall can be used for many purposes. It can be used for blocking, such as all the malicious IPs, unauthorized IPS, unauthorized sites, and unsanctioned sites. For example, many users use PDF converters, they can upload confidential data to it, we can detect it, and we can block them.
Implementation Engineer at a tech vendor with 201-500 employees
Stable, scalable, but better automatic blocking needed
Pros and Cons
- "The solution is scalable."
- "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."
What is our primary use case?
What needs improvement?
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.
For how long have I used the solution?
I have been using Zscaler Cloud Firewall for approximately two years.
What do I think about the stability of the solution?
I have found the Zscaler Cloud Firewall stable.
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January 2026
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What do I think about the scalability of the solution?
The solution is scalable.
How are customer service and support?
The support is helpful from Zscaler Cloud Firewall.
What's my experience with pricing, setup cost, and licensing?
There is an annual license required for the use of the Zscaler Cloud Firewall.
What other advice do I have?
I would recommend this solution to others.
I rate Zscaler Cloud Firewall a seven out of ten.
Disclosure: My company has a business relationship with this vendor other than being a customer. Partner
Chief Executive Officer at a tech services company with 1-10 employees
Scalable, very easy to use, and offers a full suite of security features
Pros and Cons
- "The initial setup is straightforward."
- "The product could improve its integration with some legacy systems."
What is our primary use case?
The product is an easy solution to replace on-prem firewalls and VPNs and provide security for any device from anywhere - whether a user is at home or on a corporate network.
How has it helped my organization?
The solution has been very useful as it enables us to work from any place as if we were connected to the corporate network. We don't have to be in the office to take advantage of its features.
What is most valuable?
The solution's overall simplicity is excellent. It's a great selling feature.
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 solution is quite broad in its offering and covers a lot of ground security-wise.
The initial setup is straightforward.
Overall, the solution offers excellent stability.
Technical support has been very good.
We've found the scalability to be excellent.
What needs improvement?
The product could improve its integration with some legacy systems.
The solution could offer more simplicity on deployment so that it's not quite so complex sometimes.
The solution could benefit from more CASBs - cloud access security brokers.
For how long have I used the solution?
I've been using the solution for ten or more years at this point. It's been a decade or more. I've used it for a while.
What do I think about the stability of the solution?
The solution is very, very stable. There are no bugs or glitches. It doesn't crash or freeze. It's been very good overall. I find it reliable in terms of performance.
What do I think about the scalability of the solution?
We have got 40,000 users on this platform. They are from various companies. Some are small, others are quite sizable. It's a solution that can work with a wide range of companies. The product, in general, has scaled well for companies. If an organization needs to expand it, it can do so.
How are customer service and technical support?
Technical support is very good. We're quite satisfied with the level of service. They are knowledgeable and responsive.
Which solution did I use previously and why did I switch?
We did use a different solution previously.
We switched as we had an appliance with end-of-life issues. We needed something that could work without the limitation of physical devices.
How was the initial setup?
The initial setup is fairly easy. It's not overly complex, although the deployment itself can be.
The process requires some planning in advance to integrate with multiple systems, such as firewalls. If the advanced work is done, the rest of the process happens very quickly.
What about the implementation team?
We are consultants. We use it, however, we also provide services. If a client needs help with the implementation we can assist.
What's my experience with pricing, setup cost, and licensing?
The licensing is on a yearly basis. It is somewhere around 30 or 40 pounds per user for our organization.
What other advice do I have?
We are partners with Zscaler.
I'd recommend the solution to other solutions. I would suggest they try it. It's simple to use and the costs aren't so high.
I would rate the solution at a nine out of ten. Overall, we have been very happy with the product.
Which deployment model are you using for this solution?
Public Cloud
Disclosure: My company has a business relationship with this vendor other than being a customer. Partner
Buyer's Guide
Zscaler Cloud Firewall
January 2026
Learn what your peers think about Zscaler Cloud Firewall. Get advice and tips from experienced pros sharing their opinions. Updated: January 2026.
881,733 professionals have used our research since 2012.
Security Subject Matter Expert at a comms service provider with 10,001+ employees
Good sandboxing and URL filtering with capability to scale
Pros and Cons
- "The solution offers good sandboxing."
- "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."
What is our primary use case?
We are establishing IT systems from the customers' routers to the nodes in Zscaler. Once we hand over the traffic to them, we wait for them to claim the full IP packet and we send the traffic back to them along with the destination. From our perspective, Zscaler is a security solution that is implemented in the cloud so it's a cloud supported service solution. We are not specifically working on a specific firewall.
What is most valuable?
The solution has this SSL feature which is quite interesting
URL filtering is quite good.
The solution offers good sandboxing.
What needs improvement?
We've had some concerns with Zscaler, but a new version is coming out that we hope will address them. This is scheduled to be released in March 2020. They've probably done some gap analysis and will be introducing more versatile features according to customer requests.
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.
For how long have I used the solution?
I've been using this solution for a year and a half.
What do I think about the stability of the solution?
The stability of the solution is good. Our customers have been quite happy with it.
What do I think about the scalability of the solution?
You can scale the solution without any issue. It's very good.
We largely work with enterprise-level organizations.
How are customer service and technical support?
I have the impression that technical support is good, but it's the customer that creates the tickets and has direct contact with them. I understand that the number of users is more than 10,000. That means Zscaler is providing a dedicated technical account manager who resolves all the outstanding queries and issues that arise on the network.
Which solution did I use previously and why did I switch?
This is the first vendor we have used as far as cloud security is concerned.
How was the initial setup?
The initial setup was straightforward. It wasn't too complex.
Deployment times vary. It depends on the number of sites, for example. We have a separate team that works on the delivery part so I'm not able to discuss implementation on a micro-level.
However, deployment depends on the complexity of the solution, the number of sites and what the specific requirements of the customer are. It may take a day or two to fully implement, or three days, at a maximum.
What's my experience with pricing, setup cost, and licensing?
From our perspective, we're selling three separate packages: Basic, Advanced and Premium.
Depending on the requirement of the customer, we offer the package that makes the most sense.
With Basic, we provide a very limited feature set. Advanced packages will probably provide some better and more advanced features. Premium will provide everything that Zscaler has to offer. That means URL filtering, sandboxing, endpoint mitigation, etc. I'm not sure of the exact costs from Zscaler's side.
The Zscaler pricing, in general, is okay. Once more vendors come into the picture, there will probably be more competition and they may have to reduce their costs. Still, as of right now, it's reasonable.
What other advice do I have?
We're partners with Zscaler.
We have this production suite which we have customized with Zscaler and we are selling this solution to a lot of customers in which we provide sandboxing, URL filtering, testing, blacklisting, etc. We're not using the solution ourselves so much as selling it to our customers.
Zscaler has a good foothold in the market and any new competitor will have to be cognizant of the fact that they will have to be affordable and provide all of the features Zscaler has while being good at threat analysis and filtering.
I'd rate the solution eight out of ten. If it had web browser isolation I'd rate it higher.
Which deployment model are you using for this solution?
Public Cloud
Disclosure: My company has a business relationship with this vendor other than being a customer. Reseller
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Updated: January 2026
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