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Cisco Identity Services Engine (ISE) vs Forescout Platform vs Portnox 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
7.1
Cisco Identity Services Engine enhances security, simplifies operations, and reduces costs while boosting productivity and ensuring regulatory compliance.
Sentiment score
6.4
Forescout Platform enhances security by automating risk remediation, identifying devices, and targeting vulnerabilities, leading to cost savings.
Sentiment score
4.5
Portnox improves network security with efficient cloud-based management, reducing maintenance needs and offering quick policy control advantages.
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
6.8
Forescout Platform's customer service is responsive and knowledgeable but needs improvements in partner interactions and consistent service quality.
Sentiment score
6.9
Portnox's customer service is praised for responsiveness and helpfulness, though some suggest improvements in local services and partner training.
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
We have had experience with their technical support and must pay additionally for maintenance, support, and regional service.
IT Head at a tech services company with 11-50 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
7.6
Forescout Platform is praised for scalability and adaptability, accommodating various environments and needs despite network issues.
Sentiment score
7.7
Portnox effectively scales for multiple deployments, supports thousands of endpoints, and adjusts easily, though large environments may need tweaks.
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
Scalability can be costly since a physical box needs to be installed for every site.
Director, International IT Infrastructure Support & Information Security at a manufacturing company with 1,001-5,000 employees
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
8.0
Forescout Platform is highly stable, with minor issues resolved quickly by effective support, earning user confidence in its performance.
Sentiment score
7.4
Portnox is generally reliable, with high stability ratings, but experiences occasional glitches and recommends improved update communication.
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
I would rate its stability as 9.5 out of ten.
Director, International IT Infrastructure Support & Information Security at a manufacturing company with 1,001-5,000 employees
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.
Forescout users seek enhanced memory management, detection, integration, reporting, interfaces, AI features, affordability, and improved support.
Portnox users seek better integration, interface improvements, flexible configuration, enhanced reporting, and reduced cloud reliance for on-premises solutions.
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
It would help if during integration, an admin user could check the password or credential used, as they currently cannot see the password after it is entered and saved.
Security Consultant at a tech vendor with 10,001+ employees
Forescout Platform could enhance its integration of AI to improve IoT and OT device security to better meet our needs.
IT Head at a tech services company with 11-50 employees
The console is a fat client, and a web interface would be preferable.
Director, International IT Infrastructure Support & Information Security at a manufacturing company with 1,001-5,000 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.
Forescout Platform is costly but offers scalable value, with flexible licensing based on devices and potential discounts available.
Portnox offers competitive, transparent pricing under $20 per device annually, though opinions on affordability vary among users.
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
Installing a physical box on each site can be expensive.
Director, International IT Infrastructure Support & Information Security at a manufacturing company with 1,001-5,000 employees
The overall pricing of Forescout Platform is reasonable for the functionality it provides.
IT Head at a tech services company with 11-50 employees
The price of Forescout Platform is reasonable and not overly costly.
Security Consultant at a tech vendor 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.
Forescout Platform offers agentless network access, endpoint visibility, and seamless integration for efficient security and compliance management.
Portnox provides agentless, scalable network visibility and security with easy management and integration, streamlining access control and operational efficiency.
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
One of the most valuable features of Forescout Platform is its automation, particularly the ability to automate remediation of rogue devices on the network.
Director, International IT Infrastructure Support & Information Security at a manufacturing company with 1,001-5,000 employees
The most effective feature has been network access management, which has been crucial for our primary use cases in the organization.
IT Head at a tech services company with 11-50 employees
When it comes to the effectiveness of Forescout Platform's real-time visibility in reducing the overall attack surface, I give it a 9 out of 10.
Security Consultant at a tech vendor with 10,001+ employees
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
 

Mindshare comparison

As of April 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 Forescout Platform is 10.3%, down from 13.4% 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%
Forescout Platform10.3%
Portnox5.4%
Other62.6%
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.
AshishKumar Rai - PeerSpot reviewer
Security Consultant at a tech vendor with 10,001+ employees
Comprehensive visibility has strengthened endpoint control and automated threat response across networks
When it comes to improving Forescout Platform, I have faced some issues recently, particularly with the switch integration part. When integrating a switch, it asks for the vendor type, and often it does not match. For example, one series of HP switches may not be found in that vendor list. This leads to frustration because you have to check again with different HP models, and once you integrate a switch, you cannot edit the vendor list without removing it. Other issues are being worked on, particularly related to switch integration. I believe they will be fixed in the next upgrade or patch fix. There are no major issues, but the configuration changes needed for the switch model are necessary, and I think it would help if during integration, an admin user could check the password or credential used, as they currently cannot see the password after it is entered and saved.
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
8%
Financial Services Firm
8%
Government
8%
Manufacturing Company
12%
Financial Services Firm
11%
Computer Software Company
8%
Government
7%
Manufacturing Company
16%
Financial Services Firm
12%
Healthcare Company
9%
Computer Software Company
5%
 

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 Business30
Midsize Enterprise10
Large Enterprise44
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...
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 cann...
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 some...
What advice do you have for others considering Forescout Platform?
Forescout is a very powerful NAC product that does not rely on port level configuration. It can detect and block unau...
What advice do you have for others considering Forescout Platform?
I would rate the Forescout Device and Visibility Control Platform at a six out of ten.
What advice do you have for others considering Forescout Platform?
I recommend doing a compression demo. If people use it, they will buy it. So they have to see the product in place. T...
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, pri...
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,...
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 monit...
 

Also Known As

Cisco ISE
Forescout Platform, CounterACT for Endpoint Compliance, ForeScout CounterACT
Access Layers Portnox, Portnox CLEAR
 

Interactive Demo

Demo not available
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
NHS Sussex, SAP, SEGA, Vistaprint, Miami Children's Hospital, Pioneer Investments, New York Law School, OmnicomGroup, Meritrust
Data Realty, Royal London, Wales Millennium Centre, McLaren Construction Group, EL AL Israeli Airlines, 
Find out what your peers are saying about Hewlett Packard Enterprise, Cisco, Fortinet and others in Network Access Control (NAC). Updated: March 2026.
885,728 professionals have used our research since 2012.