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[ aws . s3api ]



Creates or modifies the PublicAccessBlock configuration for an Amazon S3 bucket. To use this operation, you must have the s3:PutBucketPublicAccessBlock permission. For more information about Amazon S3 permissions, see Specifying Permissions in a Policy .


When Amazon S3 evaluates the PublicAccessBlock configuration for a bucket or an object, it checks the PublicAccessBlock configuration for both the bucket (or the bucket that contains the object) and the bucket owner's account. If the PublicAccessBlock configurations are different between the bucket and the account, Amazon S3 uses the most restrictive combination of the bucket-level and account-level settings.

For more information about when Amazon S3 considers a bucket or an object public, see The Meaning of "Public" .

Related Resources

See also: AWS API Documentation

See 'aws help' for descriptions of global parameters.


--bucket <value>
[--content-md5 <value>]
--public-access-block-configuration <value>
[--cli-input-json <value>]
[--generate-cli-skeleton <value>]


--bucket (string)

The name of the Amazon S3 bucket whose PublicAccessBlock configuration you want to set.

--content-md5 (string)

The MD5 hash of the PutPublicAccessBlock request body.

--public-access-block-configuration (structure)

The PublicAccessBlock configuration that you want to apply to this Amazon S3 bucket. You can enable the configuration options in any combination. For more information about when Amazon S3 considers a bucket or object public, see The Meaning of "Public" in the Amazon Simple Storage Service Developer Guide .

Shorthand Syntax:


JSON Syntax:

  "BlockPublicAcls": true|false,
  "IgnorePublicAcls": true|false,
  "BlockPublicPolicy": true|false,
  "RestrictPublicBuckets": true|false

--cli-input-json (string) Performs service operation based on the JSON string provided. The JSON string follows the format provided by --generate-cli-skeleton. If other arguments are provided on the command line, the CLI values will override the JSON-provided values. It is not possible to pass arbitrary binary values using a JSON-provided value as the string will be taken literally.

--generate-cli-skeleton (string) Prints a JSON skeleton to standard output without sending an API request. If provided with no value or the value input, prints a sample input JSON that can be used as an argument for --cli-input-json. If provided with the value output, it validates the command inputs and returns a sample output JSON for that command.

See 'aws help' for descriptions of global parameters.


To set the block public access configuration for a bucket

The following put-public-access-block example sets a restrictive block public access configuration for the specified bucket.

aws s3api put-public-access-block \
    --bucket my-bucket \
    --public-access-block-configuration "BlockPublicAcls=true,IgnorePublicAcls=true,BlockPublicPolicy=true,RestrictPublicBuckets=true"

This command produces no output.