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How do I enable ICMP echo (ping reply)?

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    In most cases with public-facing instances, it is desirable by system administrators to allow ping reply as a basic means of verifying network response. This is a common AWS EC2 FAQ.

    Create a security group (or use an existing one) and add a permission for ICMP IPs with a type and code of -1 e.g:

    screen-AddIPs-v1.png

    Note: You can assign the IPs as 0.0.0.0/0 to allow all IPs and networks or restrict access with the appropriate CIDR notation.
     

    Once added, the permission will be listed in the security group as follows: 

    screen-Allow-v1.png
     

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