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Illumio Security Policy Guide 26.x (SaaS)

Loopback Interfaces

(Works with Linux VENs) VENs can report loopback interfaces and enforce policy on them.

The VEN reports all interfaces, including loopback interfaces. If the VEN detects a loopback interface that is not within the standard-defined IP block for loopback interfaces (127.0.0.0/8), the VEN reports it to the PCE as a loopback interface. If the workload is in scope for loopback interfaces to participate in policy enforcement, the workload distributes the IP address to peers and enforces policy on that interface.

The PCE web console defines the scope in which loopback interfaces participate in policy enforcement.

  1. Log in to the web console as a Global Ruleset Provisioner or a Global Org Owner.

  2. Choose Settings > Security.

  3. Click the Loopback Interfaces tab.

  4. Choose labels to define the scope.