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    Anti-DDoS:ModifyPort

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    Anti-DDoS:ModifyPort

    Last Updated:Jan 30, 2026

    Modifies a port forwarding rule.

    Operation description

    This operation can be used with Terraform. For more information, see What is Terraform.

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    RAM authorization

    The table below describes the authorization required to call this API. You can define it in a Resource Access Management (RAM) policy. The table's columns are detailed below:

    • Action: The actions can be used in the Action element of RAM permission policy statements to grant permissions to perform the operation.

    • API: The API that you can call to perform the action.

    • Access level: The predefined level of access granted for each API. Valid values: create, list, get, update, and delete.

    • Resource type: The type of the resource that supports authorization to perform the action. It indicates if the action supports resource-level permission. The specified resource must be compatible with the action. Otherwise, the policy will be ineffective.

      • For APIs with resource-level permissions, required resource types are marked with an asterisk (*). Specify the corresponding Alibaba Cloud Resource Name (ARN) in the Resource element of the policy.

      • For APIs without resource-level permissions, it is shown as All Resources. Use an asterisk (*) in the Resource element of the policy.

    • Condition key: The condition keys defined by the service. The key allows for granular control, applying to either actions alone or actions associated with specific resources. In addition to service-specific condition keys, Alibaba Cloud provides a set of common condition keys applicable across all RAM-supported services.

    • Dependent action: The dependent actions required to run the action. To complete the action, the RAM user or the RAM role must have the permissions to perform all dependent actions.

    Action

    Access level

    Resource type

    Condition key

    Dependent action

    yundun-ddoscoo:ModifyPort

    update

    *All Resource

    *

    		 None None

    Request parameters

    Parameter

    Type

    Required

    Description

    Example
    FrontendPort

    string

    Yes

    The forwarding port. Valid values: 0 to 65535.

    55
    FrontendProtocol

    string

    Yes

    The type of the forwarding protocol. Valid values:

    • tcp: TCP protocol.

    • udp: UDP protocol.

    tcp
    InstanceId

    string

    Yes

    The ID of the Anti-DDoS Proxy instance to which the port forwarding rule belongs.

    Note

    You can call DescribeInstanceIds to query the IDs of all Anti-DDoS Proxy instances.

    ddoscoo-cn-st21zbyq****
    BackendPort

    string

    Yes

    The origin server port. Valid values: 0 to 65535.

    55
    RealServers

    array

    Yes

    The IP addresses of origin servers.

    string

    No

    The IP address of the origin server.

    1.XX.XX.1
    ProxyEnable

    integer

    No

    Indicates whether the traffic diversion switch is on. Valid values:

    • 0: off.

    • 1: on.

    0

    Response elements

    Element

    Type

    Description

    Example

    object

    RequestId

    string

    The request ID, which is used to locate and troubleshoot issues.

    39499F01-19D9-4EA4-A0E9-C6014BA5CDBE

    Examples

    Success response

    JSON format

    {
  "RequestId": "39499F01-19D9-4EA4-A0E9-C6014BA5CDBE"
}

    Error codes

    See Error Codes for a complete list.

    Release notes

    See Release Notes for a complete list.