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doc-exports/docs/obs/perms-cfg/obs_40_0036.html
zhangyue 6ae4b62d6f OBS PREMISSION DOC 
Reviewed-by: Sabelnikov, Dmitriy <dmitriy.sabelnikov@t-systems.com>
Co-authored-by: zhangyue <zhangyue164@huawei.com>
Co-committed-by: zhangyue <zhangyue164@huawei.com>
2025-04-25 08:19:55 +00:00

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Restricting Access to a Bucket for Specific IP Addresses

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 Buckets.
  2. In the bucket list, click the bucket name you want to go to the Objects page.
  3. In the navigation pane, choose Permissions > Bucket Policies.
  4. On the Bucket Policies page, click Create.
  5. Configure a bucket policy.

    Figure 1 Configuring a bucket policy
    Table 1 Parameters for configuring a bucket policy

    Parameter

    Description

    Policy view

    Select Visual Editor or JSON based on your own habits. Visual Editor is used here.

    Policy Name

    Enter a policy name.

    Effect

    Select Deny.

    Principal
    • Select All accounts.

    Resources
    • Method 1:
      • Select Entire bucket (including the objects in it).
    • Method 2:
      • Select Current bucket and Specified objects.
      • Set the resource path to * to indicate all objects in the bucket.

    Actions
    • Choose Customize.
    • Select * (indicating all actions).

    Conditions (Optional)
    • Key: Select SourceIp.
    • Condition Operator: Select IpAddress
    • Value: Enter 114.115.1.0/24.
      NOTE:
      • The IP address specified here is only for reference. Configure it based on the site requirements.
      • Use commas (,) to separate multiple IP addresses.

    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. Confirm and click Create.

Verification

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