Rule ID
SV-217492r382735_rule
Version
V1R4
CCIs
CCI-001414
An inactive interface is rarely monitored or controlled and may expose a network to an undetected attack on that interface. Unauthorized personnel with access to the communication facility could gain access to a router by connecting to a configured interface that is not in use.
Verify inactive interfaces on the router are disabled by executing a "show interface status" command and confirming the line "disabled" is present on any interface where the interface is inactive. If there are any inactive interfaces enabled on the router, this is a finding.
Remove subinterfaces and disable any inactive ports on the router via the "shutdown" command on the interface configuration mode.