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Security Groups & NACLs

Blacklist Port(s)

A network ACL that blacklist inbound and outbound traffic based on Port(s).

The template creates the network access list (NACL) into an existing VPC, and requires the following details: 

  • VPC ID: Provide the VPC ID to create the NACL in.
  • NACL Rules: Click on 'Customize Rules' and enter the missing rule information (Source IP, Port number, Protocol, and Action) depending on the NACL template. 

See Related Items section for configuration templates to create a new VPC.

Items
5
Size
1.2 KB
Missing Parameters
AWSTemplateFormatVersion: "2010-09-09"
Description: ""
Resources:
  NetworkAcl:
    Type: "AWS::EC2::NetworkAcl"
    Properties:
      VpcId: ""
  IngressRule0:
    Type: "AWS::EC2::NetworkAclEntry"
    Properties:
      Egress: false
      NetworkAclId:
        Ref: "NetworkAcl"
      CidrBlock: "0.0.0.0/0"
      Protocol: "tcp"
      PortRange:
        From: ""
        To: ""
      RuleNumber: "100"
      RuleAction: "deny"
  IngressRule1:
    Type: "AWS::EC2::NetworkAclEntry"
    Properties:
      Egress: false
      NetworkAclId:
        Ref: "NetworkAcl"
      CidrBlock: "0.0.0.0/0"
      Protocol: "-1"
      RuleNumber: "200"
      RuleAction: "allow"
  EgressRule0:
    Type: "AWS::EC2::NetworkAclEntry"
    Properties:
      Egress: true
      NetworkAclId:
        Ref: "NetworkAcl"
      CidrBlock: "0.0.0.0/0"
      Protocol: "tcp"
      PortRange:
        From: ""
        To: ""
      RuleNumber: "100"
      RuleAction: "deny"
  EgressRule1:
    Type: "AWS::EC2::NetworkAclEntry"
    Properties:
      Egress: true
      NetworkAclId:
        Ref: "NetworkAcl"
      CidrBlock: "0.0.0.0/0"
      Protocol: "-1"
      RuleNumber: "200"
      RuleAction: "allow"
Parameters: {}
Metadata: {}
Conditions: {}

Actions



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