amazon web services - My EC2 instance has a Public IP but don't have a Public DNS -

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i created new vpc called testglobal 2 subnets: opennet, closednet

so created ec2 instances on subnets , can't ping them.

in ec2 panel shows public ip don't shows public dns.

they associated elasticips , added group traffic in/out.

am doing wrong?

ec2 instances in public subnet (what you've called opennet) have public dns , public ip address. able ping them if in security group allows icmp echo requests client-side ip address.

instances in private subnet (closednet) not have public ip addresses or public dns names. have private addresses within range of subnets. intent of private subnet - not allow direct public internet traffic. access systems in private subnets instance in public subnets, or alternatively via vpn.

more specific advice require further information, screenshots of instance, subnet, route table , security group details.


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