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Restricting Access to a Bucket for Specific IP Addresses

Updated on 2024-02-29 GMT+08:00

Scenario

This case describes how to restrict the source IP addresses that can access an OBS bucket. The following shows how to deny a client access whose source IP address is within the range of 114.115.1.0/24.

Recommended Configuration

Bucket policy

Procedure

  1. In the navigation pane of OBS Console, choose Object Storage.
  2. In the bucket list, click the bucket name you want to go to the Overview page.
  3. In the navigation pane, choose Permissions.
  4. On the Bucket Policies page, click Create Bucket Policy under Custom Bucket Policies.
  5. Configure parameters for a bucket policy.

    Table 1 Parameters for creating a bucket policy

    Parameter

    Description

    Policy Mode

    Select Customized.

    Effect

    Select Deny.

    Principal

    • Choose Include > Other account.
    • Account ID: Enter *, which indicates that the setting takes effect for all registered users and anonymous users.
    • User ID: Leave the user ID blank.

    Resources

    Select Include > Entire bucket.

    Actions

    • Include
    • Action Name: Select *, which indicates all permissions.

    Conditions

    • Conditional Operator: IpAddress
    • Key: Select SourceIp.
    • Value: Enter 114.115.1.0/24.
      NOTE:

      Use commas (,) to separate multiple IP addresses.

    NOTE:

    If you want to allow clients whose IP addresses are outside the configured range to access your bucket, grant access permissions to anonymous users by referring to Granting Permissions to Anonymous Users.

  6. Click OK. The bucket policy is created.

Verification

Initiate an access request from an IP address within the range of 114.115.1.0/24. The access is denied. Initiate an access request from an IP address outside the range of 114.115.1.0/24. The access is allowed.

Related Scenarios

To allow only a specified IP address to access the OBS bucket, set Condition Operator to NotIpAddress and specify the allowed IP address as the Value.

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