CODEWITHSUNDEEP
aws-cloudformation
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Reputation: 9193

aws cloudformation, what does the following mean

I have inherited an aws project with the following cloudformation settings for a vpc security group.

SecurityGroupEgress:
  - IpProtocol: -1
    FromPort: -1
    ToPort: -1
    CidrIp: 0.0.0.0/0

I am not an expert in networking or VPC, could someone explain to me what the following means, specifically the -1.

Upvotes: 0

Views: 60

Answers (1)

John Rotenstein
John Rotenstein

Reputation: 269284

It means:

  • On whatever security group this configuration is attached
  • Allow all traffic
  • On any port
  • From anywhere in the Internet (0.0.0.0/0)

From AWS::EC2::SecurityGroupEgress - AWS CloudFormation:

You can use -1 for the type or code to mean all types or all codes.

Upvotes: 1

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