特定のセキュリティグループのInboundの追加と削除のみができるIAM policy

gistfile1.json

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Action": [
                "ec2:AuthorizeSecurityGroupIngress",
                "ec2:RevokeSecurityGroupIngress"
            ],
            "Resource": [
                "arn:aws:ec2:ap-northeast-1:12345:security-group/sg-example"
            ]
        }
    ]
}

gistfile2.sh

#!/bin/bash

global_ip=$(curl -s inet-ip.info)

# IP制限追加
aws ec2 authorize-security-group-ingress --group-id $SG_GROUP_ID --protocol tcp --port 80 --cidr "$global_ip/32"
aws ec2 authorize-security-group-ingress --group-id $SG_GROUP_ID --protocol tcp --port 443 --cidr "$global_ip/32"

# IP制限削除
aws ec2 revoke-security-group-ingress --group-id $SG_GROUP_ID --protocol tcp --port 80 --cidr "$global_ip/32"
aws ec2 revoke-security-group-ingress --group-id $SG_GROUP_ID --protocol tcp --port 443 --cidr "$global_ip/32"