What is an important step after addressing VEN issues?

Disabling listen-only mode is a crucial step after addressing VEN (Virtual Enforcement Node) issues because it allows the PCE (Policy Compute Engine) to actively communicate with the VENs and enforce updated security policies. When in listen-only mode, the VENs do not receive any new policy updates or configuration changes, which can hinder the effectiveness of the security posture.

By switching off listen-only mode, the VENs can move from a passive state to an active state, applying the configured policies that have been adjusted or corrected after troubleshooting any issues. This is vital for ensuring that the security measures intended to protect the environment are effectively implemented.

Rebooting the PCE, updating security policies, or performing another backup are not immediate steps that contribute to restoring full functionality to the VENs. While updating security policies might be necessary in the broader context of an overall security strategy, it is the action of disabling listen-only mode that allows those policies to be enforced and operational following the resolution of any issues with the VEN.