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Cisco Identity Services Engine (ISE) vs Portnox comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Dec 28, 2025

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
7.1
Cisco Identity Services Engine enhances security, simplifies operations, and reduces costs while boosting productivity and ensuring regulatory compliance.
Sentiment score
4.5
Portnox offers cost savings and efficiency by reducing staffing needs with cloud-hosted network visibility and security solutions.
Direct comparisons with Forescout reveal up to 30% to 40% difference in cost savings.
Service Line Manager (Service Operations Expert) - Network Access Control at a pharma/biotech company with 10,001+ employees
If I compare this to an on-premises environment using Cisco ISE or Aruba ClearPass, it would require phenomenally large teams for infrastructure management.
Sr. Cloud Security Architect at a tech services company with 11-50 employees
If you were moving from a traditional on-premise NAC that was 100% managed by the IT department, there would be great savings in going to a cloud-based NAC with Portnox.
IT Infrastructure Manager at a tech vendor with 501-1,000 employees
Most customers feel value immediately upon deployment.
Product Manager at Applied Principles Limited
 

Customer Service

Sentiment score
6.7
Cisco ISE support is highly rated for knowledge and responsiveness but struggles with response times and communication challenges.
Sentiment score
6.9
Portnox customer service is generally well-rated for responsiveness, though improvements in technical training and ticketing are needed.
I rate the technical support as one out of ten.
Service Line Manager (Service Operations Expert) - Network Access Control at a pharma/biotech company with 10,001+ employees
Cisco support has pretty good teams for support and every time we had good answers and we could somehow solve the issues we had.
Network and Technology Information Manager at Akkodis
Sometimes it's challenging to identify which support team is responsible for certain issues, which is a significant concern.
Solution Architect, Presales Engineer at a computer software company with 51-200 employees
The main area needing improvement is the technical knowledge of support staff.
Senior Network Engineer at a tech services company with 11-50 employees
For very high severity issues where the entire office is non-functional, response time is within 30 minutes.
Sr. Cloud Security Architect at a tech services company with 11-50 employees
They respond very immediately and provide detailed, amazing support.
Systems Analyst at a construction company with 1,001-5,000 employees
 

Scalability Issues

Sentiment score
7.3
Cisco ISE supports smooth scalability for diverse enterprises, but virtualization and hardware challenges may require strategic solutions.
Sentiment score
7.7
Portnox is praised for its scalability, flexible licensing, and ease of expansion, especially with its cloud-based Portnox Clear.
Factors like architecture, business nature, and legal limitations such as GDPR affect it.
Service Line Manager (Service Operations Expert) - Network Access Control at a pharma/biotech company with 10,001+ employees
However, you can have some latency issues depending on where your devices are.
Network and Technology Information Manager at Akkodis
We have never had any challenge based on a customer who has 1,000 devices versus a customer who has 30,000 devices; the feel is the same.
Product Manager at Applied Principles Limited
They ensure the backend can support it and do the provisioning while maintaining headroom and elasticity.
Sr. Cloud Security Architect at a tech services company with 11-50 employees
I rate scalability a ten; you simply pay and you get more.
Network And Security Engineer at a manufacturing company with 1,001-5,000 employees
 

Stability Issues

Sentiment score
7.7
Cisco ISE is stable and reliable, but large deployments may face challenges, requiring proper configuration and effective support.
Sentiment score
7.4
Portnox stability ratings vary, with more issues reported for CORE users, particularly regarding updates and communication processes.
Cisco Identity Services Engine (ISE) is considered very reliable and stable.
Solution Architect, Presales Engineer at a computer software company with 51-200 employees
The stability of Cisco Identity Services Engine (ISE) is poor for certain use cases, like authentication.
Service Line Manager (Service Operations Expert) - Network Access Control at a pharma/biotech company with 10,001+ employees
Sometimes when we have upgrades or failovers with Cisco Identity Services Engine (ISE), we had some minor issues.
Network and Technology Information Manager at Akkodis
The product itself is available and its uptime is 100%.
Systems Analyst at a construction company with 1,001-5,000 employees
In the four years that I used Portnox, if it crashed or the server crashed, that would not have been more than once.
Information Technology System Administrator at a energy/utilities company with 10,001+ employees
If there is a version one and another version, the communication between the organization using it and Portnox should be firm so they can coordinate effectively.
Windows Server Administrator/ IT Support Officer at a financial services firm with 5,001-10,000 employees
 

Room For Improvement

Cisco ISE is hindered by complexity, compatibility issues, costly licensing, and needs improvements in usability, support, and performance.
Portnox requires improvements in data retrieval, authentication, support, documentation, costs, integration, server response, and MAC address filtering.
The whole setup works well with Cisco access points and Cisco switches, but when you have multiple vendors in the environment, such as HP switches or access points like Aruba, you'll find they will not work well with Cisco Identity Services Engine (ISE).
Technical Services Lead at Telenet Solutions
Pricing can be more expensive compared to other vendors, and there is a significant price gap observed, which doesn't seem justified by some specific features.
Solution Architect, Presales Engineer at a computer software company with 51-200 employees
They are very poor in asset classification and should focus on improving the preauthentication profiling, especially for NAC use cases.
Service Line Manager (Service Operations Expert) - Network Access Control at a pharma/biotech company with 10,001+ employees
Ideally, we should be able to search for any MAC address in the database, regardless of its authentication status, to see all its associated groups and potential conflicts.
President at TrackerSoft
When I reach the technical support, they give solutions that do not help me much, so I try to search the internet for other users' experiences to find solutions.
IT Project Manager at Xpress technologies
When I'm doing filtering at times, it doesn't filter the items properly.
Systems Analyst at a construction company with 1,001-5,000 employees
 

Setup Cost

Cisco ISE pricing is complex and costly, with strong vendor partnerships needed for discounts, favoring large enterprises over smaller businesses.
Portnox offers competitive, value-driven pricing with scalability, flexible subscriptions, and costs based on user numbers and devices.
Compared to other solutions like HPE ClearPass, Cisco is more costly, and the conversation suggests a possible forty percent price gap compared to competitors.
Solution Architect, Presales Engineer at a computer software company with 51-200 employees
The license costs can range between $50,000 to $100,000 per year for enterprises.
Technical Services Lead at Telenet Solutions
Cloud solutions are expensive, while on-prem setups with shared environments are cheaper but not effective.
Service Line Manager (Service Operations Expert) - Network Access Control at a pharma/biotech company with 10,001+ employees
If you compare Portnox with all other well-known standard products, it is the cheapest.
IT Network Engineer at a tech vendor with 5,001-10,000 employees
The pricing is a bit high, possibly due to the cloud features and running instances across regions like the US, Asia, and Europe.
President at TrackerSoft
You are charged according to the number of users.
Senior Network Engineer at a tech services company with 11-50 employees
 

Valuable Features

Cisco ISE excels in security, network access control, and integration, offering adaptability, scalability, and centralized management for organizations.
Portnox provides efficient, scalable network security and management with easy integration, praised UI, cost-efficiency, and effective visibility.
Cisco Identity Services Engine (ISE) offers authentication using RADIUS, enhancing network security by separating and segregating networks.
Technical Services Lead at Telenet Solutions
There is value because it helps us secure the network and prevents certain things from happening which could cause financial loss.
Ag Systems & Networks Head at UNBS
The adaptability of Cisco Identity Services Engine (ISE) policy enforcement can fit to the site we have depending on which kind of devices we have on site and then the needs for authentication, granting access and then assigning each device into its correct network for segmentation.
Network and Technology Information Manager at Akkodis
It's notable how Portnox has improved operational efficiency.
IT Network Engineer at a tech vendor with 5,001-10,000 employees
It is a very robust application because three teams use that part: the network team, the security team, and the support people.
Windows Server Administrator/ IT Support Officer at a financial services firm with 5,001-10,000 employees
It is possible to find the MAC address in the switch, but in Portnox, it is very useful to see the status of those ports, and that increases our security.
Assistant System Engineer at Tata Consultancy
 

Categories and Ranking

Cisco Identity Services Eng...
Ranking in Network Access Control (NAC)
2nd
Average Rating
8.2
Reviews Sentiment
6.6
Number of Reviews
144
Ranking in other categories
Cisco Security Portfolio (4th)
Portnox
Ranking in Network Access Control (NAC)
6th
Average Rating
8.0
Reviews Sentiment
7.0
Number of Reviews
29
Ranking in other categories
ZTNA (8th), Passwordless Authentication (1st)
 

Mindshare comparison

As of March 2026, in the Network Access Control (NAC) category, the mindshare of Cisco Identity Services Engine (ISE) is 21.7%, down from 27.1% compared to the previous year. The mindshare of Portnox is 5.4%, up from 3.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Network Access Control (NAC) Mindshare Distribution
ProductMindshare (%)
Cisco Identity Services Engine (ISE)21.7%
Portnox5.4%
Other72.9%
Network Access Control (NAC)
 

Featured Reviews

NF
Network and Technology Information Manager at Akkodis
Has improved authentication management and simplified visitor network access
The log capacity in Cisco Identity Services Engine (ISE) could be enhanced because today natively on the ISE can only have a look at the logs from the day before. You cannot search into the oldest logs; you have to use another tool for that. This can be blocking if you don't have any log consolidation solution. To do a search for an issue or something that happened two days ago, you cannot search directly in there. The capacity of Cisco Identity Services Engine (ISE) could be enhanced. Something between one week and one month for the log capacity would be nice.
Maurice Mwaura - PeerSpot reviewer
Product Manager at Applied Principles Limited
Unified access control has improved compliance visibility and simplified passwordless access
There is work to be done when it comes to making the solution more seamless. For example, when a user is denied access, they would need a way to maybe self-resolve themselves, perhaps a way to generate a ticket on their own, something around resolutions. When it comes to users using the product, that is where good products are differentiated from products that are a bit of a challenge. Portnox has much to do in terms of their reporting. The generated reports need improvement. Things that other tools would say are normal are usually not present. For example, there is a page called NAS devices or NAS network that is able to show the switches that have been managed. Currently, there is no way of generating an easy report or an easy way of just generating something to tell the customer what they have been able to achieve so far. This is not done yet and is still very manual. I think there is work to be done there. More integrations around the various products being used would be beneficial. So far I have not encountered any major challenge. Where there was a challenge, I think support came in and helped us resolve. In fact, most of the challenges are not with the product; they are with the customer environment. I think that is just to update their documentation where they have come across a new vendor for easier integrations in the future.
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Top Industries

By visitors reading reviews
Manufacturing Company
11%
Computer Software Company
9%
Financial Services Firm
9%
Government
8%
Manufacturing Company
16%
Financial Services Firm
13%
Healthcare Company
9%
Computer Software Company
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business45
Midsize Enterprise32
Large Enterprise91
By reviewers
Company SizeCount
Small Business15
Midsize Enterprise5
Large Enterprise9
 

Questions from the Community

Which is better - Aruba Clearpass or Cisco ISE?
Aruba ClearPass is a Network Access Control tool that gives secure network access to multiple device types. You can adapt the policies to VPN access, wired, or wireless access. You can securely ...
What are the main differences between Cisco ISE and Forescout Platform?
OK, so Cisco ISE uses 802.1X to secure switchports against unauthorized access. The drawback of this is that ISE cannot secure the port if a device does not support 802.1x. Cameras, badge readers, ...
How does Cisco ISE compare with Fortinet FortiNAC?
Cisco ISE uses AI endpoint analytics to identify new devices based on their behavior. It will also notify you if someone plugs in with a device that is not allowed and will block it. The user exper...
What is your experience regarding pricing and costs for Portnox Clear?
Portnox's pricing is very conservative and offers great value for money. If I compare it with any other solution, pricing is definitely at the top of the list because it is very affordable. Pricing...
What needs improvement with Portnox Clear?
In Portnox, the area that has room for improvement is that older data is not fetching correctly. For an older switch, for example, a six-month-old switch that we just added, it does not happen to e...
What is your primary use case for Portnox Clear?
My use case for Portnox is for whitelisting ports and adding policies. We are using two modes: enforce mode and monitoring mode. For monitoring, we are using some smaller switches, just some busine...
 

Also Known As

Cisco ISE
Access Layers Portnox, Portnox CLEAR
 

Interactive Demo

Demo not available
 

Overview

 

Sample Customers

Aegean Motorway, BC Hydro, Beachbody, Bucks County Intermediate Unit , Cisco IT, Derby City Council, Global Banking Customer, Gobierno de Castilla-La Mancha, Houston Methodist, Linz AG, London Hydro, Ministry of Foreign Affairs, Molina Healthcare, MST Systems, New South Wales Rural Fire Service, Reykjavik University, Wildau University
Data Realty, Royal London, Wales Millennium Centre, McLaren Construction Group, EL AL Israeli Airlines, 
Find out what your peers are saying about Cisco Identity Services Engine (ISE) vs. Portnox and other solutions. Updated: March 2026.
884,933 professionals have used our research since 2012.