What is the required action for devices that fail to meet security compliance in Cisco ISE?

When devices fail to meet security compliance in Cisco Identity Services Engine (ISE), they are placed in a Quarantine VLAN until compliance is achieved. This action is critical for maintaining the security integrity of the network. The use of a Quarantine VLAN effectively isolates non-compliant devices from the rest of the network, preventing potential security threats or vulnerabilities that could exploit these devices. By doing so, the network administrator can enforce security policies and ensure that only devices adhering to compliance standards gain full access to network resources.

This process is an integral part of Cisco ISE’s posture assessment feature, which continuously evaluates the security status of devices. While in Quarantine VLAN, these non-compliant devices can be redirected to remediation resources or given instructions on how to achieve compliance, thereby protecting the overall security posture of the network while still providing a pathway for these devices to regain full access once they meet the necessary compliance criteria.

The emphasis on moving non-compliant devices to a Quarantine VLAN reflects a proactive security stance that prioritizes the safety and integrity of the broader network environment.