As network security threats become more sophisticated and complex, it is becoming increasingly important for organizations to implement strong network security protocols.
One such protocol is profiling, which involves identifying and categorizing devices on a network in order to better manage security policies.
Profiling is made possible through the use of profiler services and probes in Cisco ISE, a popular network security solution.
In this article, we will explore what profiling is, how it works, and the role of profiler services and probes in Cisco ISE.
What is Profiling?
Profiling is the process of identifying and categorizing devices on a network based on their characteristics, such as their operating system, device type, and software versions. Profiling is important because it allows network administrators to better manage network access policies and security protocols.
Profiling is typically done through the use of profiling services and probes, which are software components that work together to identify and categorize devices on a network.
How Profiling Works
Profiling begins with the deployment of profiler services and probes on a network. The profiler service collects information about devices on the network, such as their IP addresses, MAC addresses, and DNS names. The profiler service then sends this information to the profiler probe, which analyzes the information and categorizes each device based on its characteristics.
Once devices have been categorized, network administrators can use this information to create and enforce access policies. For example, a network administrator might create an access policy that only allows devices running a specific operating system to access certain resources on the network.
Profiler Services in Cisco ISE
Cisco ISE is a network security solution that provides profiling services and probes to identify and categorize devices on a network. Cisco ISE includes two types of profiler services: active and passive.
Active profiling involves actively sending requests to devices on the network in order to gather information about them. Passive profiling involves monitoring network traffic and analyzing the information contained in the traffic to identify and categorize devices.
Profiler Probes in Cisco ISE
Profiler probes in Cisco ISE are responsible for analyzing the information collected by the profiler services and categorizing devices based on their characteristics. Cisco ISE includes several types of profiler probes, including RADIUS, DHCP, and SNMP probes.
RADIUS probes are used to gather information about devices that authenticate using RADIUS. DHCP probes are used to gather information about devices that obtain IP addresses using DHCP. SNMP probes are used to gather information about devices that support SNMP.
Types of Profiling in Cisco ISE
There are two types of profiling available in Cisco ISE: endpoint profiling and application profiling.
Endpoint Profiling
Endpoint profiling involves identifying and categorizing devices on a network based on their endpoint characteristics. This includes information such as the device type, operating system, and installed applications.
Cisco ISE uses several techniques to identify endpoints, including RADIUS, DHCP, and SNMP probes. These probes gather information about endpoints as they connect to the network.
Once an endpoint has been identified, Cisco ISE can assign it to a specific endpoint identity group. These groups can be used to apply access policies to different types of devices. For example, an organization might create an endpoint identity group for mobile devices that restricts access to certain resources.
Application Profiling
Application profiling involves identifying and categorizing network applications based on their characteristics. This includes information such as the application type, protocol, and usage patterns.
Application profiling is important because it allows network administrators to identify and control the use of network resources. For example, an organization might want to restrict access to certain applications, such as peer-to-peer file sharing.
Cisco ISE uses several techniques to identify applications, including deep packet inspection (DPI). This involves analyzing the content of network traffic to identify the type of application being used.
Once an application has been identified, Cisco ISE can assign it to a specific application identity group. These groups can be used to apply access policies to different types of applications. For example, an organization might create an application identity group for social media applications that restricts access to certain websites.
Benefits of Profiling in Cisco ISE
There are several benefits to using profiling in Cisco ISE, including:
Improved Network Security
Profiling allows network administrators to better manage network access policies and enforce security protocols. By identifying and categorizing devices and applications on the network, administrators can ensure that only authorized users have access to sensitive resources.
Better Network Performance
Profiling can also improve network performance by allowing administrators to identify and control the use of network resources. This can help prevent network congestion and ensure that critical applications receive the necessary bandwidth.
Increased Visibility
Profiling provides increased visibility into network activity, allowing administrators to better understand how devices and applications are being used on the network. This information can be used to make more informed decisions about network policies and resource allocation.
Probes in Cisco ISE
Probes are an important part of profiling in Cisco ISE. They are used to gather information about endpoints and applications as they connect to the network. There are several types of probes available in Cisco ISE, including:
RADIUS Probes
RADIUS probes are used to gather information about endpoints as they connect to the network using the RADIUS protocol. This includes information such as the device type, operating system, and installed applications.
DHCP Probes
DHCP probes are used to gather information about endpoints as they obtain an IP address from the DHCP server. This includes information such as the device type, operating system, and installed applications.
SNMP Probes
SNMP probes are used to gather information about endpoints using the Simple Network Management Protocol (SNMP). This includes information such as the device type, operating system, and installed applications.
By using these probes, Cisco ISE can build a comprehensive profile of endpoints and applications on the network. This information can be used to enforce access policies and ensure network security.
Profiler Services in Cisco ISE
Profiler services in Cisco ISE are used to collect and analyze data from probes and other sources to build a profile of endpoints and applications on the network. There are several types of profiler services available in Cisco ISE, including:
Identity Services Engine Profiler
The Identity Services Engine (ISE) Profiler is a built-in service in Cisco ISE that collects data from probes and other sources to build a profile of endpoints and applications on the network.
Device Sensor
The Device Sensor is a profiler service in Cisco ISE that is used to identify endpoints that cannot be identified using standard probes. It does this by analyzing network traffic to identify unique device characteristics.
Network Scan
The Network Scan is a profiler service in Cisco ISE that is used to identify network applications that cannot be identified using standard probes. It does this by performing a comprehensive scan of the network to identify all devices and applications.
By using these profiler services, Cisco ISE can build a comprehensive profile of endpoints and applications on the network, which can be used to enforce access policies and ensure network security.
Conclusion
In conclusion, profiling, profiler services, and probes are essential tools for network security in Cisco ISE. By using these tools, network administrators can identify and categorize devices and applications on the network, enforce access policies, and detect potential security threats.
With the increasing need for network security, it is essential for IT professionals to be knowledgeable in the use of Cisco ISE. To learn more about Cisco ISE and how it can help secure your network, check out our Cisco ISE course page.
With our comprehensive training, you can gain the skills and knowledge needed to manage network security and ensure the safety of your network resources.
