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security-groups.yaml
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security-groups.yaml
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Description: >
This template contains the security groups required by our entire stack.
Parameters:
EnvironmentName:
Description: An environment name that will be prefixed to resource names
Type: String
VPC:
Type: AWS::EC2::VPC::Id
Description: Choose which VPC the security groups should be deployed to
Resources:
# This security group defines who/where is allowed to access the ECS hosts directly.
ECSHostSecurityGroup:
Type: AWS::EC2::SecurityGroup
Properties:
VpcId: !Ref VPC
GroupDescription: Access to the ECS hosts and the tasks/containers that run on them
SecurityGroupIngress:
# Only allow inbound access to ECS from the ELB
- SourceSecurityGroupId: !Ref LoadBalancerSecurityGroup
IpProtocol: TCP
FromPort: 32768
ToPort: 65535
# Allow SSH access to ECS instances from everywhere
- CidrIp: 0.0.0.0/0
Description: "Allow SSH access to ECS Instances"
IpProtocol: TCP
FromPort: 22
ToPort: 22
Tags:
- Key: Name
Value: !Sub ${EnvironmentName}-ECS-Hosts
# This security group defines who/where is allowed to access the Application Load Balancer.
LoadBalancerSecurityGroup:
Type: AWS::EC2::SecurityGroup
Properties:
VpcId: !Ref VPC
GroupDescription: Access to the load balancer that sits in front of ECS
SecurityGroupIngress:
# Allow http/https access to our ECS services
- CidrIp: 0.0.0.0/0
IpProtocol: -1
Tags:
- Key: Name
Value: !Sub ${EnvironmentName}-LoadBalancers
Outputs:
ECSHostSecurityGroup:
Description: A reference to the security group for ECS hosts
Value: !Ref ECSHostSecurityGroup
LoadBalancerSecurityGroup:
Description: A reference to the security group for load balancers
Value: !Ref LoadBalancerSecurityGroup