Posture is a service in Cisco ISE that checks the compliance of endpoints with corporate security policies before allowing them to connect to the network. Posture policies define the requirements that endpoints must meet to be compliant, such as having antivirus software installed and updated, or having a specific registry key value. If an endpoint is compliant, Cisco ISE can apply a Change of Authorization (CoA) to grant it access to the network resources. CoA is a mechanism that allows Cisco ISE to dynamically change the authorization attributes of an existing session, such as VLAN, dACL, or SGT, without requiring the user to reauthenticate.
CoA can be triggered by various events, such as posture assessment results, profiling changes, or manual actions by the administrator. CoA can also be used to quarantine or disconnect non-compliant endpoints.
Therefore, ensuring that an endpoint is compliant with a posture policy configured in Cisco ISE provides the benefit of allowing CoA to be applied if the endpoint status is compliant. References :=
* Cisco Identity Services Engine Administrator Guide, Release 2.2 - Configure Client Posture Policies
* Cisco Identity Services Engine Administrator Guide, Release 2.2 - Change of Authorization

Reference: https://blogs.cisco.com/security/sensitive-data-exfiltration-and-the-insider

Explanation Explanation As the new device does not have a supplicant, we cannot use 802.1X. MAC Authentication Bypass (MAB) is a fallback option for devices that don't support 802.1x. It is virtually always used in deployments in some way shape or form. MAB works by having the authenticator take the connecting device's MAC address and send it to the authentication server as its username and password. The authentication server will check its policies and send back an Access-Accept or Access-Reject just like it would with 802.1x. Cisco ISE Profiling Services provides dynamic detection and classification of endpoints connected to the network. Using MAC addresses as the unique identifier, ISE collects various attributes for each network endpoint to build an internal endpoint database. The classification process matches the collected attributes to prebuilt or user-defined conditions, which are then correlated to an extensive library of profiles. These profiles include a wide range of device types, including mobile clients (iPads, Android tablets, Chromebooks, and so on), desktop operating systems (for example, Windows, Mac OS X, Linux, and others), and numerous non-user systems such as printers, phones, cameras, and game consoles. Once classified, endpoints can be authorized to the network and granted access based on their profile. For example, endpoints that match the IP phone profile can be placed into a voice VLAN using MAC Authentication Bypass (MAB) as the authentication method. Another example is to provide differentiated network access to users based on the device used. For example, employees can get full access when accessing the network from their corporate workstation but be granted limited network access when accessing the network from their personal iPhone. Reference: https://community.cisco.com/t5/security-documents/ise-profiling-design-guide/ta-p/3739456 Explanation As the new device does not have a supplicant, we cannot use 802.1X.
MAC Authentication Bypass (MAB) is a fallback option for devices that don't support 802.1x. It is virtually always used in deployments in some way shape or form. MAB works by having the authenticator take the connecting device's MAC address and send it to the authentication server as its username and password. The authentication server will check its policies and send back an Access-Accept or Access-Reject just like it would with 802.1x.
Cisco ISE Profiling Services provides dynamic detection and classification of endpoints connected to the network. Using MAC addresses as the unique identifier, ISE collects various attributes for each network endpoint to build an internal endpoint database. The classification process matches the collected attributes to prebuilt or user-defined conditions, which are then correlated to an extensive library of profiles. These profiles include a wide range of device types, including mobile clients (iPads, Android tablets, Chromebooks, and so on), desktop operating systems (for example, Windows, Mac OS X, Linux, and others), and numerous non-user systems such as printers, phones, cameras, and game consoles.
Once classified, endpoints can be authorized to the network and granted access based on their profile. For example, endpoints that match the IP phone profile can be placed into a voice VLAN using MAC Authentication Bypass (MAB) as the authentication method. Another example is to provide differentiated network access to users based on the device used. For example, employees can get full access when accessing the network from their corporate workstation but be granted limited network access when accessing the network from their personal iPhone.
Explanation Explanation As the new device does not have a supplicant, we cannot use 802.1X. MAC Authentication Bypass (MAB) is a fallback option for devices that don't support 802.1x. It is virtually always used in deployments in some way shape or form. MAB works by having the authenticator take the connecting device's MAC address and send it to the authentication server as its username and password. The authentication server will check its policies and send back an Access-Accept or Access-Reject just like it would with 802.1x. Cisco ISE Profiling Services provides dynamic detection and classification of endpoints connected to the network. Using MAC addresses as the unique identifier, ISE collects various attributes for each network endpoint to build an internal endpoint database. The classification process matches the collected attributes to prebuilt or user-defined conditions, which are then correlated to an extensive library of profiles. These profiles include a wide range of device types, including mobile clients (iPads, Android tablets, Chromebooks, and so on), desktop operating systems (for example, Windows, Mac OS X, Linux, and others), and numerous non-user systems such as printers, phones, cameras, and game consoles. Once classified, endpoints can be authorized to the network and granted access based on their profile. For example, endpoints that match the IP phone profile can be placed into a voice VLAN using MAC Authentication Bypass (MAB) as the authentication method. Another example is to provide differentiated network access to users based on the device used. For example, employees can get full access when accessing the network from their corporate workstation but be granted limited network access when accessing the network from their personal iPhone. Reference: https://community.cisco.com/t5/security-documents/ise-profiling-design-guide/ta-p/3739456

The Python script code snippet for the Cisco ASA REST API is used to add a global rule into policies. The script uses the urllib2 module to create an HTTP request with the URL, headers, and post_data. The post_data is a JSON object that contains the parameters for the global rule, such as the destination service, the source address, the permit value, and the position. The script also uses the base64 module to encode the username and password for authentication. The script then sends the request to the ASA REST API and prints the status code and the response. If the status code is 201, it means the operation was successful and the global rule was added. If the status code is not 201, it means there was an error and the script prints the JSON error message.
The script also handles any HTTP errors and value errors that might occur during the execution. References:
* Cisco ASA REST API Quick Start Guide
* Configure Secure Access to Use REST API with Python
* GitHub - timwukp/Cisco-ASA-REST-API