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Showing content from https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_CreateNetworkAcl.html below:

CreateNetworkAcl - Amazon Elastic Compute Cloud

CreateNetworkAcl

Creates a network ACL in a VPC. Network ACLs provide an optional layer of security (in addition to security groups) for the instances in your VPC.

For more information, see Network ACLs in the Amazon VPC User Guide.

Request Parameters

The following parameters are for this specific action. For more information about required and optional parameters that are common to all actions, see Common Query Parameters.

ClientToken

Unique, case-sensitive identifier that you provide to ensure the idempotency of the request. For more information, see Ensuring idempotency.

Type: String

Required: No

DryRun

Checks whether you have the required permissions for the action, without actually making the request, and provides an error response. If you have the required permissions, the error response is DryRunOperation. Otherwise, it is UnauthorizedOperation.

Type: Boolean

Required: No

TagSpecification.N

The tags to assign to the network ACL.

Type: Array of TagSpecification objects

Required: No

VpcId

The ID of the VPC.

Type: String

Required: Yes

Response Elements

The following elements are returned by the service.

clientToken

Unique, case-sensitive identifier to ensure the idempotency of the request. Only returned if a client token was provided in the request.

Type: String

networkAcl

Information about the network ACL.

Type: NetworkAcl object

requestId

The ID of the request.

Type: String

Errors

For information about the errors that are common to all actions, see Common client error codes.

Examples Example

This example creates a network ACL in the specified IPv6-enabled VPC. The response includes default IPv4 and IPv6 entries for egress and ingress traffic, each with a high rule number. These are the last entries we process to decide whether traffic is allowed in or out of an associated subnet. If the traffic doesn't match any rules with a lower rule number, then these default entries ultimately deny the traffic.

Sample Request

https://ec2.amazonaws.com/?Action=CreateNetworkAcl
&VpcId=vpc-11ad4878
&AUTHPARAMS

Sample Response

<CreateNetworkAclResponse xmlns="http://ec2.amazonaws.com/doc/2016-11-15/">
   <requestId>59dbff89-35bd-4eac-99ed-be587EXAMPLE</requestId> 
   <networkAcl>
      <networkAclId>acl-5fb85d36</networkAclId>
      <vpcId>vpc-11ad4878</vpcId>
      <default>false</default>
      <entrySet>
         <item>
            <ruleNumber>32767</ruleNumber>
            <protocol>all</protocol>
            <ruleAction>deny</ruleAction>
            <egress>true</egress>
            <cidrBlock>0.0.0.0/0</cidrBlock>
         </item>
         <item>
            <ruleNumber>32767</ruleNumber>
            <protocol>all</protocol>
            <ruleAction>deny</ruleAction>
            <egress>false</egress>
            <cidrBlock>0.0.0.0/0</cidrBlock>
         </item>
        <item>
           <ruleNumber>32768</ruleNumber>
           <protocol>all</protocol>
           <ruleAction>deny</ruleAction>
           <egress>true</egress>
           <ipv6CidrBlock>::/0</ipv6CidrBlock>
        </item>
        <item>
           <ruleNumber>32768</ruleNumber>
           <protocol>all</protocol>
           <ruleAction>deny</ruleAction>
           <egress>false</egress>
           <ipv6CidrBlock>::/0</ipv6CidrBlock>
        </item>
      </entrySet>
      <associationSet/>
      <tagSet/>
   </networkAcl>
</CreateNetworkAclResponse>