AWS IAM Policy Examples

00_README.md

Create EC2 Instance

• NAME: iam-testing-instance
• Ubuntu 24.04LTS image
• t3.micro instance type
• Select your keypair
• Create new security group (or use existing one) that allows port 22 from your current address

Once created, SSH into the instance and await next steps.

01-install-awscli.sh

# install the aws cli tools
sudo snap install aws-cli --classic

# verify CLI is working w/ role
aws sts get-caller-identity

02-manage-ec2-instances.json

{
    "Version":"2012-10-17",		 	 	 
    "Statement": [
        {
            "Effect": "Allow",
            "Action": [
                "ec2:StartInstances",
                "ec2:StopInstances"
            ],
            "Resource": "arn:aws:ec2:*:*:instance/*",
        },
        {
            "Effect": "Allow",
            "Action": "ec2:DescribeInstances",
            "Resource": "*"
        }
    ]
}

02-tagged-ec2-management.json

{
    "Version":"2012-10-17",		 	 	 
    "Statement": [
        {
            "Effect": "Allow",
            "Action": [
                "ec2:StartInstances",
                "ec2:StopInstances"
            ],
            "Resource": "arn:aws:ec2:*:*:instance/*",
            "Condition": {
                "StringEquals": {
                    "aws:ResourceTag/Owner": "${aws:username}"
                }
            }
        },
        {
            "Effect": "Allow",
            "Action": "ec2:DescribeInstances",
            "Resource": "*"
        }
    ]
}

03-date-limited-access.json

{
    "Version":"2012-10-17",		 	 	 
    "Statement": [
        {
            "Effect": "Allow",
            "Action": "service-prefix:action-name",
            "Resource": "*",
            "Condition": {
                "DateGreaterThan": {"aws:CurrentTime": "2020-04-01T00:00:00Z"},
                "DateLessThan": {"aws:CurrentTime": "2020-06-30T23:59:59Z"}
            }
        }
    ]
}

04manage-security-groups.json

{
   "Version":"2012-10-17",		 	 	 
   "Statement": [{
      "Effect": "Allow",
      "Action": [
         "ec2:DescribeSecurityGroups",
         "ec2:DescribeSecurityGroupRules",
         "ec2:DescribeTags"
      ],
      "Resource": "*"
    },
    {
      "Effect": "Allow",
      "Action": [
         "ec2:AuthorizeSecurityGroupIngress", 
         "ec2:RevokeSecurityGroupIngress", 
         "ec2:AuthorizeSecurityGroupEgress", 
         "ec2:RevokeSecurityGroupEgress", 
         "ec2:ModifySecurityGroupRules",
         "ec2:UpdateSecurityGroupRuleDescriptionsIngress", 
         "ec2:UpdateSecurityGroupRuleDescriptionsEgress"
      ],
      "Resource": [
         "arn:aws:ec2:us-east-1:111122223333:security-group/*"
      ],
      "Condition": {
         "StringEquals": {
            "aws:ResourceTag/Department": "Test"
         }
      }
     },     
     {
      "Effect": "Allow",
      "Action": [
         "ec2:ModifySecurityGroupRules"
      ],
      "Resource": [
         "arn:aws:ec2:us-east-1:111122223333:security-group-rule/*"
      ]
     }
   ]
}

05-dynamodb-table-access.json

{
    "Version":"2012-10-17",		 	 	 
    "Statement": [
        {
            "Sid": "AllAPIActionsOnBooks",
            "Effect": "Allow",
            "Action": "dynamodb:*",
            "Resource": "arn:aws:dynamodb:us-west-2:123456789012:table/Books"
        }
    ]
}