# ModifyVpcBlockPublicAccessOptions
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Modify VPC Block Public Access (BPA) options. VPC Block Public Access (BPA) enables you to block resources in VPCs and subnets that you own in a Region from reaching or being reached from the internet through internet gateways and egress-only internet gateways. To learn more about VPC BPA, see [Block public access to VPCs and subnets](https://docs.aws.amazon.com/vpc/latest/userguide/security-vpc-bpa.html) in the *Amazon VPC User Guide*.

## Request Parameters
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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](CommonParameters.md).

 **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

 **InternetGatewayBlockMode**   
The mode of VPC BPA.  
+  `off`: VPC BPA is not enabled and traffic is allowed to and from internet gateways and egress-only internet gateways in this Region.
+  `block-bidirectional`: Block all traffic to and from internet gateways and egress-only internet gateways in this Region (except for excluded VPCs and subnets).
+  `block-ingress`: Block all internet traffic to the VPCs in this Region (except for VPCs or subnets which are excluded). Only traffic to and from NAT gateways and egress-only internet gateways is allowed because these gateways only allow outbound connections to be established.
Type: String  
Valid Values: `off | block-bidirectional | block-ingress`   
Required: Yes

## Response Elements
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The following elements are returned by the service.

 **requestId**   
The ID of the request.  
Type: String

 **vpcBlockPublicAccessOptions**   
Details related to the VPC Block Public Access (BPA) options.  
Type: [VpcBlockPublicAccessOptions](API_VpcBlockPublicAccessOptions.md) object

## Errors
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For information about the errors that are common to all actions, see [Common client error codes](errors-overview.md#CommonErrors).

## See Also
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For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS Command Line Interface V2](https://docs.aws.amazon.com/goto/cli2/ec2-2016-11-15/ModifyVpcBlockPublicAccessOptions) 
+  [AWS SDK for .NET V4](https://docs.aws.amazon.com/goto/DotNetSDKV4/ec2-2016-11-15/ModifyVpcBlockPublicAccessOptions) 
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/ec2-2016-11-15/ModifyVpcBlockPublicAccessOptions) 
+  [AWS SDK for Go v2](https://docs.aws.amazon.com/goto/SdkForGoV2/ec2-2016-11-15/ModifyVpcBlockPublicAccessOptions) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/ec2-2016-11-15/ModifyVpcBlockPublicAccessOptions) 
+  [AWS SDK for JavaScript V3](https://docs.aws.amazon.com/goto/SdkForJavaScriptV3/ec2-2016-11-15/ModifyVpcBlockPublicAccessOptions) 
+  [AWS SDK for Kotlin](https://docs.aws.amazon.com/goto/SdkForKotlin/ec2-2016-11-15/ModifyVpcBlockPublicAccessOptions) 
+  [AWS SDK for PHP V3](https://docs.aws.amazon.com/goto/SdkForPHPV3/ec2-2016-11-15/ModifyVpcBlockPublicAccessOptions) 
+  [AWS SDK for Python](https://docs.aws.amazon.com/goto/boto3/ec2-2016-11-15/ModifyVpcBlockPublicAccessOptions) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/ec2-2016-11-15/ModifyVpcBlockPublicAccessOptions)