CloudFormation SG Self-Referenced

sg-self-reference.yml

---
Description: Create a VPC with a SG which references itself
AWSTemplateFormatVersion: '2010-09-09'
Resources:
  vpc:
    Type: AWS::EC2::VPC
    Properties:
      CidrBlock: 172.16.0.0/16
      EnableDnsSupport: false
      EnableDnsHostnames: false
      InstanceTenancy: default
      Tags:
      - Key: Name
        Value: vpc-main
  sgcluster:
    Type: AWS::EC2::SecurityGroup
    DependsOn: vpc
    Properties:
      GroupDescription: vpc tester sg
      VpcId:
        Ref: vpc
  sgclusteringress:
    Type: AWS::EC2::SecurityGroupIngress
    DependsOn: sgcluster
    Properties:
      GroupId:
        Ref: sgcluster
      IpProtocol: tcp
      FromPort: '0'
      ToPort: '65535'
      SourceSecurityGroupId:
        Ref: sgcluster