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Cisco Umbrella vs Illumio vs Zscaler Internet Access comparison

 

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:
 

ROI

Sentiment score
7.2
Cisco Umbrella enhances security, reduces costs, and integrates easily, offering quick deployment and significant financial returns within a year.
Sentiment score
6.4
Illumio is praised for its cost-effectiveness, operational value, East-West traffic visibility, and time-saving benefits.
Sentiment score
5.7
Zscaler Internet Access drives cost savings by reducing on-premises needs, enhancing security, and cutting hardware and staffing costs.
Cisco is a big brand in the networking domain, but in security, they are pushing a lot and improving day by day.
Chief Technology Officer at Binary Global Limited
From my point of view, the biggest return on investment when using the solution is that it makes it a lot easier to delegate some of the tasks that were traditionally used, such as building policies on the firewalls and doing it through Cisco Umbrella.
Network Engineer at a tech consulting company with 501-1,000 employees
The biggest return on investment when using Cisco Umbrella for me is the ease of use of the fact that we've deployed this with our Cisco VPN Secure Client, so every computer has the Umbrella module in it.
Senior Network Engineer at Mintz, Levin, Cohn, Ferris, Glovsky and Popeo, P.C.
I observe extensive return on investment with Illumio.
Senior Security Consultant at Orange Cyberdefense
Illumio is known to be the cheapest solution among the security solutions we evaluated.
IT Specialist at Allianz
The managed service aspect of Zscaler Internet Access has allowed for reduced staffing costs, resulting in a saving of approximately 20-25% compared to prior expenses.
Sr. Cloud Security Architect at a tech services company with 11-50 employees
 

Customer Service

Sentiment score
8.0
Cisco Umbrella offers professional, reliable customer support with expertise, though some users desire faster response times and streamlined processes.
Sentiment score
1.0
Illumio's customer support is generally satisfactory with 24/7 availability, though some report delays and varying helpfulness levels.
Sentiment score
6.5
Zscaler Internet Access customer service is responsive and knowledgeable, with high ratings but occasional scheduling and resource issues.
I would rate customer support ten out of ten due to the excellent assistance throughout the POC process.
Manager Cyber Security Department at Mana
Cisco's support is fantastic, providing assistance when needed, especially during the initial installation process.
Director at Infosonik Systems Ltd
If I don't need to go to support all the time, that means the product is working fine, so I'm very happy with them.
Network Engineer at a tech consulting company with 501-1,000 employees
Even if we raise an issue on non-working days like Saturdays or Sundays, we receive prompt responses.
IT Specialist at Allianz
From my experience, they are very responsive.
Technical Associate at a healthcare company with 11-50 employees
The technical support for Zscaler Internet Access is rated around seven out of ten due to some response time issues and the engagement model.
Sr. Cloud Security Architect at a tech services company with 11-50 employees
Zscaler Internet Access customer service is really very good.
Product Owner at a financial services firm with 501-1,000 employees
I find customer support to be quite adequate
Group IT Manager at a wholesaler/distributor with 10,001+ employees
 

Scalability Issues

Sentiment score
8.2
Cisco Umbrella offers a scalable, adaptable, and efficient solution for various company sizes, simplifying user and site management.
Sentiment score
6.5
Illumio excels in scalability, supporting cloud expansions and large installations, receiving positive ratings from diverse users and teams.
Sentiment score
7.2
Zscaler Internet Access offers scalable cloud solutions for easy expansion, with some challenges in cost, bandwidth, and deployment complexity.
Cisco Umbrella scales incredibly with the growing needs of my organization.
Network Engineer at a construction company with 1,001-5,000 employees
Cisco Umbrella scales really well with the growing needs of my company, bringing the ability to ensure that people are safe and connected.
Senior Network Engineer at Mintz, Levin, Cohn, Ferris, Glovsky and Popeo, P.C.
Cisco Umbrella scales effectively with the growing needs of my company; it's excellent, and I have experienced no issues.
Senior Network Engineer at Boys Town
Scaling it to a large level is not an issue for us.
Cyber Security Architect at a tech vendor with 10,001+ employees
With the pricing structure that they currently have, it is only for big customers.
Product Owner at a financial services firm with 501-1,000 employees
I find Zscaler Internet Access to be highly scalable, which was one of the reasons for choosing it.
Group IT Manager at a wholesaler/distributor with 10,001+ employees
Zscaler Internet Access is scalable and has points of presence across the globe to ensure low latency and reliable connections.
Sr. Cloud Security Architect at a tech services company with 11-50 employees
 

Stability Issues

Sentiment score
8.3
Cisco Umbrella is praised for its stability, reliability, minimal maintenance, and quick resolution of rare connectivity issues.
Sentiment score
7.7
Illumio is considered stable and reliable, with users praising its SaaS option and rating stability 8.5 out of 10.
Sentiment score
7.4
Zscaler Internet Access is globally stable and secure, with minor regional latency issues, and straightforward deployment praised by users.
I have not experienced any major stability issues with Cisco Umbrella.
Director at Infosonik Systems Ltd
Cisco Umbrella Secure Access is pretty stable in my mind, and we have not seen many glitches that would have interrupted services at customer locations.
Chief Technology Officer at Binary Global Limited
The stability and reliability of the Cisco Umbrella platform have been great.
Senior Network Engineer at Mintz, Levin, Cohn, Ferris, Glovsky and Popeo, P.C.
Illumio is a stable solution with no glitches or bugs reported, making it a reliable product for us.
IT Specialist at Allianz
Zscaler Internet Access is stable and capable of building resilient architectures.
Sr. Cloud Security Architect at a tech services company with 11-50 employees
Zscaler Internet Access is very stable, and I would rate its stability as nine out of ten.
Group IT Manager at a wholesaler/distributor with 10,001+ employees
 

Room For Improvement

Cisco Umbrella needs enhancements in reporting, integration, user-friendliness, protection, licensing, infrastructure, and support for an improved user experience.
Illumio requires better support, integration, security, and flexibility, with improved upgrades, visibility, and interactive tech sessions for users.
Zscaler Internet Access needs improved integration, reporting, user interface, support, pricing, scalability, and feature enhancements for better overall performance.
Making it more flexible and easy to deploy, particularly when integrating with other technologies like Active Directory and proxies, would be beneficial.
Manager Cyber Security Department at Mana
The product can only shield a small area, making it less effective for larger spaces or multiple users.
Director at Infosonik Systems Ltd
I have to write an email to Umbrella support to get assistance, unlike the other products where I can call the Cisco technical assistance center and get an engineer.
CTO at Next Technologies Ltd
They need to install an agent in the container world, while Akamai Guardicore does not need to install an agent, so they have native support that Illumio lacks.
Senior Security Consultant at Orange Cyberdefense
There could also be more examples of how the automations can be done using Illumio.
Cyber Security Architect at a tech vendor with 10,001+ employees
Another improvement might be around scalability, ensuring that as organizations grow, Illumio can handle even larger, more complex environments seamlessly.
DevOps at a marketing services firm with 51-200 employees
The response time and engagement model for technical support could be improved to handle complex outages more efficiently.
Sr. Cloud Security Architect at a tech services company with 11-50 employees
In future updates, I would like to see some of the features bundled into the existing product set, perhaps more AI features and a refreshed interface.
Cyber Security Architect at a manufacturing company with 1,001-5,000 employees
Zscaler Internet Access has introduced AI control for tools such as ChatGPT, providing options to restrict to text-only input without file or image uploads through CASB restriction controls.
Associate Vice President at Novac Technology Solutions
 

Setup Cost

Cisco Umbrella's pricing is fair yet varies, offering value in security coverage with opportunities to bundle for discounts.
Illumio's pricing is competitive and flexible, varying by workload and duration, appealing to enterprises over traditional firewalls.
Zscaler Internet Access pricing is high, with a per-user model, making it cost-effective yet potentially inaccessible for small businesses.
We've bundled that with our firewall stuff and our VPN, which brings the price down and adds the ability to grow.
Senior Network Engineer at Mintz, Levin, Cohn, Ferris, Glovsky and Popeo, P.C.
The only cost associated is the license cost unless additional solutions need to be integrated with Umbrella, which would incur extra costs.
Director at Infosonik Systems Ltd
The prices need to be lower as the current pricing is exceedingly high.
Network Solutions Architect at a financial services firm with 10,001+ employees
I know that Illumio is the cheapest solution in the security area.
IT Specialist at Allianz
But when you compare it to firewalls, then it may not be that expensive.
Senior Security Consultant at Orange Cyberdefense
I think it's not very expensive if we compare it with Guardicore.
Cyber Security Architect at a tech vendor with 10,001+ employees
Zscaler Internet Access is recognized as an expensive solution.
Group IT Manager at a wholesaler/distributor with 10,001+ employees
Zscaler Internet Access is less expensive than competitors like Palo Alto, offering a premium service justified by security enhancements and cost-effective scalability.
Sr. Cloud Security Architect at a tech services company with 11-50 employees
Of course, it is an expensive product.
Product Owner at a financial services firm with 501-1,000 employees
 

Valuable Features

Cisco Umbrella offers DNS-based protection, ease of use, and integration, enhancing productivity, security compliance, and visibility across networks.
Illumio enhances security and operational efficiency with centralized rule management, traffic analysis, and secure micro-segmentation features.
Zscaler Internet Access enhances security with URL filtering, SSL inspection, threat protection, and seamless remote management, improving efficiency globally.
The DNS layer security provided by Cisco Umbrella is very effective for our security posture, offering us vast improvements in visibility over DNS queries and potential threats.
Manager Cyber Security Department at Mana
The most valuable feature of Cisco Umbrella is its DNS security.
Network Solutions Architect at a financial services firm with 10,001+ employees
The best possible thing is that it is very easy to deploy, easy to configure, and very fast to get onboarded with a customer because this is a cloud-based service.
Chief Technology Officer at Binary Global Limited
Illumio helps in audit purposes by saving data and showing blocked traffic, ensuring no outside traffic is allowed.
IT Specialist at Allianz
The most important feature is the traffic review analysis, where we use the draft view and the reported view that helps us understand how the application interacts with other applications in the environment, and based on that, we are able to define the policies.
Cyber Security Architect at a tech vendor with 10,001+ employees
The dependency map is the most valuable aspect.
Technical Associate at a healthcare company with 11-50 employees
It prevents numerous web attacks through its AI/ML incorporated capability which identifies malware, threats, and viruses.
Associate Vice President at Novac Technology Solutions
Zscaler Internet Access has positively impacted my organization by reducing the dependency on on-premises hardware and improving security posture, enabling faster user onboarding, and providing better performance for remote users.
Senior Network Engineer at Anthology
The most valuable feature for me is the ability to see how my network and traffic looks with modules like analytics and insights.
Group IT Manager at a wholesaler/distributor with 10,001+ employees
 

Mindshare comparison

Domain Name System (DNS) Security Mindshare Distribution
ProductMindshare (%)
Cisco Umbrella20.5%
Infoblox Advanced DNS Protection10.7%
Palo Alto Networks DNS Security8.1%
Other60.7%
Domain Name System (DNS) Security
Cloud and Data Center Security Mindshare Distribution
ProductMindshare (%)
Illumio18.4%
Akamai Guardicore Segmentation17.6%
Cisco Secure Workload10.7%
Other53.3%
Cloud and Data Center Security
Secure Web Gateways (SWG) Mindshare Distribution
ProductMindshare (%)
Zscaler Internet Access12.1%
Cisco Umbrella12.8%
Prisma Access by Palo Alto Networks8.8%
Other66.3%
Secure Web Gateways (SWG)
 

Featured Reviews

BB
Senior Network Engineer at Mintz, Levin, Cohn, Ferris, Glovsky and Popeo, P.C.
Ensures comprehensive protection with seamless threat logging and efficient policy management
My favorite feature of Cisco Umbrella is probably just the DNS and the fact that when a security threat happens, all of that gets logged in their Umbrella portal, and it's very easy to find who's been accessing the site and how many people have accessed it, so that we can go to them and make sure they're not compromised. The features of Cisco Umbrella benefit my company by providing less time to search for things through logs, to look for what we need. It's just one place to go, and we just search for it, and we find it really fast. The fact that there's a virtual database that has all that information is great on our portal.
US
Cyber Security Architect at a tech vendor with 10,001+ employees
Have created granular security policies based on roles and application behavior
The best feature that Illumio offers is that we can easily understand how to label the applications, how to install Illumio agent on the client machines, how to install the agent on the servers, and how to do the ring-fencing. The log analysis is very simple, and we can map the traffic very easily, such as the traffic view and map view. We have many views to do that, and then we have a topology environment where we can expand the topology and understand how we want to prepare our policy based on the requirement. These are some of the very good use cases that Illumio provides, which none of the other vendors can offer in such an easy and usable way. The most important feature is the traffic review analysis, where we use the draft view and the reported view that helps us understand how the application interacts with other applications in the environment, and based on that, we are able to define the policies. It has increased the business for the organization. We are creating business by supporting the client. The client is getting more security and is more confident in their network because they now have the micro-segmentation feature in their environment. This is new technology and that's how it helps the organization as a whole. The clients we support are benefited, and at the same time, we are making money out of it. This is definitely a good approach. After implementing Illumio, there has been significant progress. Most of the app owners now understand what applications are communicating, how these applications interact with others, and we are more aware of which application is talking to what other servers and applications, and their roles. For instance, whether an application is talking to the DB server or an app server. We have a more granular understanding of the traffic view. Additionally, after implementing Illumio, there is greater segmentation, and fewer incidents are occurring. There have been times when an attack was halted from expanding laterally.
Mohan Janarthanan - PeerSpot reviewer
Associate Vice President at Novac Technology Solutions
User access management and threat prevention are enhanced with user-friendly controls
The best features Zscaler Internet Access offers include application control, tenant segregation, and PoP center regions which have low availability zones. The internet access is very successful and bandwidth speed is excellent. It also has application-based control, URL-based control, and SSL inspection capabilities, which are very useful. Additionally, the in-depth CASB segregation is very beneficial to us. One unique feature I found helpful is the tenant level restrictions, which we use to only access our organization's tenant level mail IDs, drives, and specific tenant level access while restricting public access. Zscaler Internet Access has positively impacted our organization as we have noticed substantial outputs and income. It has improved our security environment control and endpoint protection. It prevents numerous web attacks through its AI/ML incorporated capability which identifies malware, threats, and viruses. It has a toggle button to enable features entirely at the tenant level for all users onboarded into Zscaler Internet Access, resulting in much better outcomes.
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Top Industries

By visitors reading reviews
Computer Software Company
14%
Manufacturing Company
8%
Financial Services Firm
8%
Comms Service Provider
6%
Financial Services Firm
17%
Computer Software Company
11%
Manufacturing Company
8%
Healthcare Company
6%
Computer Software Company
12%
Manufacturing Company
10%
Financial Services Firm
10%
Comms Service Provider
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business50
Midsize Enterprise30
Large Enterprise51
By reviewers
Company SizeCount
Small Business4
Midsize Enterprise1
Large Enterprise9
By reviewers
Company SizeCount
Small Business17
Midsize Enterprise10
Large Enterprise37
 

Questions from the Community

Which is the better security solution - Cisco Umbrella or Zscaler?
Cisco Umbrella and Zscaler Internet Access are two broad-spectrum Internet security solutions that I have tried. Zs...
Which is the better security solution - Cisco Umbrella or Microsoft Cloud App Security?
Cisco Umbrella is an integral component of the Cisco SASE architecture. It integrates security in a single, cloud-nat...
What is your experience regarding pricing and costs for Cisco Umbrella?
The pricing for Cisco Umbrella is fair compared to other platforms out there for DNS security. We acquired it as a bu...
What is your experience regarding pricing and costs for Illumio Adaptive Security Platform?
My experience was really good because I think it's not very expensive if we compare it with Guardicore. I believe tha...
What needs improvement with Illumio Adaptive Security Platform?
Illumio can be improved if we have more interactive sessions with the tech team. The support of Illumio can be better...
What is your primary use case for Illumio Adaptive Security Platform?
The main use case for Illumio is providing micro-segmentation where we don't want to segment the network based on IP ...
Which is better, Zscaler internet access or Netsckope CASB?
We researched Netskope but ultimately chose Zscaler. Netskope is a cloud access security broker that helps identify ...
What is your experience regarding pricing and costs for Zscaler Internet Access?
It is only for big companies currently and they only focus on that. That is one of the problems to get into the marke...
What needs improvement with Zscaler Internet Access?
The admin UI and documentation for Zscaler Internet Access could be more intuitive for new users, specifically during...
 

Also Known As

OpenDNS
Illumio Adaptive Security Platform, Illumio ASP
ZIA
 

Overview

 

Sample Customers

Chart Industries, City of Aspen, Eastern Mountain Sports, FLEXcon, George Washington University, Jackson Municipal Airport Authority, Ohio Public Library Information Network, PTC, Richland Community College, Smart Motors, Tulane University, VeriClaim
Plantronics, NTT Innovation Institute Inc.
Ulster-Greene ARC, BanRegio, HDFC, Ralcorp Holdings Inc., British American Tobacco, Med America Billing Services Inc., Lanco Group, Aquafil, Telefonica, Swisscom, Brigade Group
Find out what your peers are saying about Cisco, Infoblox, Palo Alto Networks and others in Domain Name System (DNS) Security. Updated: March 2026.
885,444 professionals have used our research since 2012.