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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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Last Modified
06:46, 22 Jan 2014

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