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I'm new to managing EC2 instances. I have created one, and I can run it and remotely login with Windows Remote Desktop. I can ping external servers from inside my instance, but I cannot ping the instance from my machine using its DNS public name. I guess I'm doing something wrong with security groups. Any thoughts anybody?

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To ping an EC2 instance, you will first have to allow ICMP inbound traffic in the security group of that instance.

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