Can I add dns name in aws security group [closed]

Answer 1

Security Groups and ACLs are not able to resolve DNS hostnames.

You can use the AWS CLI to script the update of your IP dynamic address:

aws ec2 authorize-security-group-ingress --group-id --protocol tcp --port 22 --cidr /24

http://docs.aws.amazon.com/cli/latest/userguide/cli-ec2-sg.html