Cisco Identity Services Engine vs Zscaler: What are the differences?

Introduction

Cisco Identity Services Engine (ISE) and Zscaler are two popular security solutions used by organizations. While both offer powerful features for securing network and data, there are several key differences between them.

1. Deployment: Cisco ISE is typically deployed on-premises and requires hardware or virtual appliances to be installed within the organization's network. On the other hand, Zscaler is a cloud-based solution that leverages a global network of data centers to secure traffic regardless of the user's location.

2. User Authentication: Cisco ISE primarily focuses on user authentication and access control. It integrates with Active Directory, LDAP, and other user repositories to authenticate and authorize users based on policies. Zscaler, on the other hand, provides secure web gateway functionality and focuses on securing web traffic and preventing attacks.

3. Network Visibility: Cisco ISE provides detailed network visibility by collecting and analyzing network traffic, user behavior, and device information. It helps organizations gain insights into network usage and identify potential security risks. Zscaler also offers network visibility, but its focus is primarily on securing web traffic and preventing threats, rather than detailed network analysis.

4. Traffic Routing: With Cisco ISE, organizations can define network access policies and control how traffic is routed within the network. It allows for granular control over traffic flow and enables organizations to enforce security policies. Zscaler, being a cloud-based solution, routes all web traffic through its data centers, allowing for centralized security enforcement and protection.

5. Integration with Other Security Solutions: Cisco ISE integrates seamlessly with other Cisco security products, such as Firepower Threat Defense, to provide a comprehensive security solution. It allows for policy enforcement and threat mitigation across different security layers. Zscaler also integrates with other security solutions and offers integration options for web proxies, firewalls, and other security tools.

6. Scalability and Performance: Cisco ISE is known for its scalability and high-performance capabilities, making it suitable for large enterprise environments. It can handle a large number of users and devices without compromising performance. Zscaler, being a cloud-based solution, offers scalability on-demand and leverages its global network of data centers to provide optimal performance regardless of user location.

In summary, Cisco ISE is an on-premises solution focused on user authentication, network visibility, and traffic control, while Zscaler is a cloud-based solution primarily focused on securing web traffic and preventing attacks. Cisco ISE provides detailed network analysis and integrates with other Cisco security products, while Zscaler offers scalability and performance through its global network of data centers.