What occurs when a host firewall is tampered with?

When a host firewall is tampered with, a validation process begins where Illumio-added rules are restored. This process is critical for maintaining the security posture of the system. Illumio employs a set of security policies and rules that are essential for regulating and protecting network traffic on individual hosts.

If these rules are altered or removed, the integrity of the host’s security is compromised, leading to potential vulnerabilities. The validation process is an automated response designed to ensure that the security configurations remain intact. It actively checks the current state of the firewall against the desired state defined by Illumio's policies, and if discrepancies are found due to tampering, it works to reinstate the original rules. This helps in quickly restoring the host's secure state without requiring a complete shutdown or interruption of network services, thereby minimizing disruption and maintaining ongoing protections.

This mechanism illustrates the importance of having robust security measures in place that can automatically respond to unauthorized changes, keeping the systems secure against threats.