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Edge Security Acceleration:DescribeDcdnWafRule

Last Updated:Sep 11, 2025

Call the DescribeDcdnWafRule operation to retrieve the details of a specified protection rule.

Operation description

Note

A single user can call this operation up to 20 times per second.

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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

dcdn:DescribeDcdnWafRule

get

*All Resource

*

None None

Request parameters

Parameter

Type

Required

Description

Example

RuleId

integer

Yes

The ID of the protection rule. Only one rule ID is supported.

1000001

Response elements

Element

Type

Description

Example

object

RequestId

string

The request ID.

66A98669-CC6E-4F3E-80A6-3014697B11AE

Rule

object

The information about the protection rule.

RuleStatus

string

The status of the protection rule. Valid values:

  • on: enabled

  • off: disabled

on

DefenseScene

string

The type of the mitigation policy. The following scenarios are supported:

  • waf_group: basic web protection

  • custom_acl: custom mitigation policies

  • whitelist: whitelist

custom_acl

PolicyId

integer

The ID of the mitigation policy.

200001

GmtModified

string

The time when the rule was last modified. The time follows the ISO 8601 standard in the yyyy-MM-ddTHH:mm:ssZ format. The time is displayed in UTC.

2021-12-29T17:08:45Z

RuleId

integer

The ID of the protection rule.

100001

RuleName

string

The name of the protection rule.

rule_1

RuleConfig

string

The configuration of the protection rule.

{"action":"monitor","actionExternal":"{}","ccStatus":1,"conditions":[{"key":"URL","opValue":"eq","targetKey":"request_uri","values":"/example"},{"key":"Header","opValue":"eq","subKey":"trt","targetKey":"header.trt","values":"3333"}],"effect":"service","name":"aaa333","origin":"custom","ratelimit":{"interval":5,"status":{"code":404,"count":2,"stat":{"mode":"count","value":2.0}},"target":"remote_addr","threshold":2,"ttl":1800}}

Examples

Success response

JSON format

{
  "RequestId": "66A98669-CC6E-4F3E-80A6-3014697B11AE",
  "Rule": {
    "RuleStatus": "on",
    "DefenseScene": "custom_acl",
    "PolicyId": 200001,
    "GmtModified": "2021-12-29T17:08:45Z",
    "RuleId": 100001,
    "RuleName": "rule_1",
    "RuleConfig": "{\"action\":\"monitor\",\"actionExternal\":\"{}\",\"ccStatus\":1,\"conditions\":[{\"key\":\"URL\",\"opValue\":\"eq\",\"targetKey\":\"request_uri\",\"values\":\"/example\"},{\"key\":\"Header\",\"opValue\":\"eq\",\"subKey\":\"trt\",\"targetKey\":\"header.trt\",\"values\":\"3333\"}],\"effect\":\"service\",\"name\":\"aaa333\",\"origin\":\"custom\",\"ratelimit\":{\"interval\":5,\"status\":{\"code\":404,\"count\":2,\"stat\":{\"mode\":\"count\",\"value\":2.0}},\"target\":\"remote_addr\",\"threshold\":2,\"ttl\":1800}}"
  }
}

Error codes

HTTP status code

Error code

Error message

Description

400 InvalidParameter The specified parameter is invalid. A parameter is set to an invalid value.

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.