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    Web Application Firewall:ModifyCloudResource

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    Web Application Firewall:ModifyCloudResource

    Last Updated:Jul 31, 2026

    Modifies the configuration of a cloud service that is connected to WAF.

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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-waf:ModifyCloudResource

    update

    DefenseResource

    acs:yundun-waf:{#regionId}:{#accountId}:defenseresource/{#Resource}

    DefenseResource

    acs:yundun-waf:{#regionId}:{#accountId}:defenseresource/{#ResourceInstanceId}-{#Port}-{#Product}

    		 None None

    Request parameters

    Parameter

    Type

    Required

    Description

    Example
    InstanceId

    string

    Yes

    The ID of the WAF instance.

    Note

    You can call DescribeInstance to query the ID of the current WAF instance.

    waf_v3prepaid_public_cn-***
    ResourceManagerResourceGroupId

    string

    No

    The ID of the Alibaba Cloud resource group.

    rg-acfm***q
    Listen

    object

    Yes

    The listening configuration.

    TLSVersion

    string

    No

    The TLS version to add. This parameter is used only when HttpsPorts is not empty, which indicates that the domain name uses the HTTPS protocol. Valid values:

    • tlsv1: Supports TLS 1.0 and later. Provides the highest compatibility and the lowest security.

    • tlsv1.1: Supports TLS 1.1 and later. Provides good compatibility and good security.

    • tlsv1.2: Supports TLS 1.2 and later. Provides good compatibility and the highest security.

    • tlsv1.3: Supports only TLS 1.3. Provides the highest security and the lowest compatibility.

    tlsv1.2
    EnableTLSv3

    boolean

    No

    Specifies whether TLS 1.3 is supported. Valid values:

    • true: TLS 1.3 is supported.

    • false: TLS 1.3 is not supported.

    Note

    This parameter is used only when HttpsPorts is not empty, which indicates that the domain name uses the HTTPS protocol. When TLSVersion is set to tlsv1.3, this value must be true.

    true
    CipherSuite

    integer

    No

    The type of cipher suite to add. This parameter is used only when HttpsPorts is not empty, which indicates that the domain name uses the HTTPS protocol. Valid values:

    • 1: all cipher suites.

    • 2: strong cipher suites. This value can be selected only when TLSVersion is set to tlsv1.2.

    • 99: custom cipher suites. This value can be selected only when TLSVersion is not set to tlsv1.3.

    1
    CustomCiphers

    array

    No

    The custom cipher suites.

    string

    No

    The specific custom cipher suite to add. This parameter is used only when CipherSuite is set to 99.

    ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:AES128-GCM-SHA256:AES256-GCM-SHA384
    ResourceProduct deprecated

    string

    No

    The cloud service type.

    Valid values:

    • clb7 :

      Layer 7 CLB.

    • ecs :

      ECS.

    • clb4 :

      Layer 4 CLB.

    • nlb :

      NLB.

    clb7
    ResourceInstanceId deprecated

    string

    No

    The instance ID of the resource.

    lb-***
    Port deprecated

    integer

    No

    The port of the cloud service connected to WAF.

    80
    Protocol

    string

    Yes

    The protocol type.

    Valid values:

    • http :

      HTTP.

    • https :

      HTTPS.

    http
    Certificates

    array<object>

    No

    The certificate information.

    object

    No

    The certificate information.

    CertificateId

    string

    No

    The certificate ID.

    123-cn-hangzhou
    AppliedType

    string

    No

    The certificate type for the HTTPS protocol. Valid values:

    • default: default certificate.

    • extension: extended certificate.

    default
    Http2Enabled

    boolean

    No

    Specifies whether to enable HTTP/2. This parameter is used only when HttpsPorts is not empty, which indicates that the domain name uses the HTTPS protocol. Valid values:

    • true: HTTP/2 is enabled.

    • false (default): HTTP/2 is not enabled.

    true
    Redirect

    object

    No

    The forwarding configuration.

    RequestHeaders

    array<object>

    No

    The traffic mark fields and values of the domain name, which are used to mark traffic processed by WAF.

    object

    No

    The value of this parameter is in the format of [{"k":"key","v":"value"}]. key specifies the custom request header field, and value specifies the value set for the field.

    Note

    If the custom header field already exists in the request, the system overwrites the value of the custom field in the request with the specified traffic mark value.

    Key

    string

    No

    The specified custom request header field.

    key1
    Value

    string

    No

    The value set for the custom request header field.

    value1
    XffHeaderMode

    integer

    No

    The method that WAF uses to obtain the originating IP address of the client. Valid values:

    • 0: The client access traffic is not forwarded by any other Layer 7 proxy before reaching WAF.

    • 1: WAF reads the first value in the X-Forwarded-For (XFF) header as the client IP address.

    • 2: WAF reads the value of a custom header field that you specify as the client IP address.

    0
    XffHeaders

    array

    No

    The list of custom fields used to obtain the client IP address, in the format of ["header1","header2",……].

    Note

    This parameter is required only when XffHeaderMode is set to 2, which indicates that WAF reads the value of a custom header field that you specify as the client IP address.

    string

    No

    The list of custom fields used to obtain the client IP address, in the format of ["header1","header2",……].

    Note

    This parameter is required only when XffHeaderMode is set to 2, which indicates that WAF reads the value of a custom header field that you specify as the client IP address.

    header1
    ReadTimeout

    integer

    No

    The read timeout period. Unit: seconds. Valid values: 1 to 3600.

    1
    WriteTimeout

    integer

    No

    The write timeout period. Unit: seconds. Valid values: 1 to 3600.

    1
    Keepalive

    boolean

    No

    Specifies whether to enable persistent connections. Valid values:

    • true (default): Persistent connections are enabled.

    • false: Persistent connections are not enabled.

    true
    KeepaliveRequests

    integer

    No

    The number of requests that can reuse a persistent connection. Valid values: 60 to 1000.

    Note

    After persistent connections are enabled, this parameter specifies how many requests can reuse a persistent connection.

    1000
    KeepaliveTimeout

    integer

    No

    The idle timeout period for persistent connections. Valid values: 10 to 3600. Default value: 3600. Unit: seconds.

    Note

    Specifies how long an idle persistent connection can remain open before it is released.

    15
    XffProto

    boolean

    No

    Specifies whether to use X-Forward-For-Proto to pass the protocol used by WAF. Valid values:

    • true (default): The protocol used by WAF is passed.

    • false: The protocol used by WAF is not passed.

    true
    MaxBodySize

    integer

    No

    The maximum request body size. Valid values: 2 to 10. Default value: 2. Unit: GB.

    2
    RegionId

    string

    Yes

    The region where the WAF instance resides. Valid values:

    • cn-hangzhou: the Chinese mainland.

    • ap-southeast-1: outside the Chinese mainland.

    cn-hangzhou
    CloudResourceId

    string

    No

    The ID of the connected resource, which is automatically generated by WAF during cloud native mode connection.

    Note

    You can call CreateCloudResource to connect a resource and then view the resource ID in the response.

    lb-***-80-clb7

    Response elements

    Element

    Type

    Description

    Example

    object

    RequestId

    string

    The request ID.

    D7861F61-5B61-46CE-A47C-***
    CloudResource

    string

    The connected resource ID.

    lb-xxx-80-clb7

    Examples

    Success response

    JSON format

    {
  "RequestId": "D7861F61-5B61-46CE-A47C-***",
  "CloudResource": "lb-xxx-80-clb7"
}

    Error codes

    HTTP status code

    Error code

    Error message

    Description
    400 Waf.Pullin.CertExpired Certificate expired, certificate ID:%s . Certificate expired, certificate ID:%s.
    400 Waf.Pullin.CertNotExist Certificate does not exist in SSL Certificate Center, certificate type:%s, certificate ID:%s. Certificate does not exist in SSL Certificate Center, certificate type:%s, certificate ID:%s.
    400 Waf.Pullin.OnlyBeOneDefaultCert There can be only one default certificate. There can be only one default certificate.
    400 Waf.Control.CloudProductInfoNotMartch The value of the cloud product, port, instance, and input parameter to which the resource ID of the cloud product is connected to WAF does not match. The value of the cloud product, port, instance, and input parameter to which the resource ID of the cloud product is connected to WAF does not match.
    400 Waf.Control.CloudProductInfoEmpty The resource Id of the cloud product accessing WAF is null or null values exist in the three input parameters of the cloud product name, port, and cloud product instance. The resource Id of the cloud product accessing WAF is null or null values exist in the three input parameters of the cloud product name, port, and cloud product instance.
    400 Waf.Control.DefenseResourceEmpty CloudResourceId parameter is illegal. CloudResourceId parameter is illegal

    See Error Codes for a complete list.

    Release notes

    See Release Notes for a complete list.