Enabling ICMP (Internet Control Messaging Protocol) lets you use the ping command to test network connectivity on a IPv4 or IPv6 interface.
From 12.4.2 onwards in AMC/CMC you can select multiple interface option for ICMP for internal only or external only or both interfaces.
In the AMC, navigate to System Configuration > Network Settings.
In the Basic section, click the Edit.
The Basic Network Settings page displays.
In the ICMP section, select the Enable ICMP pings checkbox.
In Allow on these interface(s), select any of the following:
Internal only
External only
Both Interfaces
Click Save and apply pending changes.
The CMS supports only the internal interface. Use other values when using policy synchronization to push ICMP configuration to managed appliances.