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    Web Application Firewall:ModifyCloudResource

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    Web Application Firewall:ModifyCloudResource

    Last Updated:Mar 12, 2026

    Modifies the configuration of a cloud resource 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

    Call DescribeInstance to query the ID of the WAF instance.

    waf_v3prepaid_public_cn-***
    ResourceManagerResourceGroupId

    string

    No

    The ID of the resource group.

    rg-acfm***q
    Listen

    object

    Yes

    The listener configuration.

    TLSVersion

    string

    No

    The Transport Layer Security (TLS) version. This parameter applies only when you use the HTTPS protocol. Valid values:

    • tlsv1

    • tlsv1.1

    • tlsv1.2

    tlsv1.2
    EnableTLSv3

    boolean

    No

    Indicates whether TLS 1.3 is supported. This parameter applies only when you use the HTTPS protocol. Valid values:

    • true: TLS 1.3 is supported.

    • false: TLS 1.3 is not supported.

    true
    CipherSuite

    integer

    No

    The type of the cipher suite to add. This parameter applies only when you use the HTTPS protocol. Valid values:

    • 1: adds all cipher suites.

    • 2: adds strong cipher suites. This value is available only when TLSVersion is set to tlsv1.2.

    • 99: adds custom cipher suites.

    1
    CustomCiphers

    array

    No

    The custom cipher suites.

    string

    No

    The custom cipher suites 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 type of the cloud service. Valid values:

    • clb4: Layer 4 Classic Load Balancer (CLB).

    • clb7: Layer 7 CLB.

    • ecs: Elastic Compute Service (ECS).

    • nlb: Network Load Balancer (NLB).

    clb7
    ResourceInstanceId deprecated

    string

    No

    The ID of the cloud service instance.

    lb-***
    Port deprecated

    integer

    No

    The listening port of the cloud service instance that is added 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 ID of the certificate.

    123-cn-hangzhou
    AppliedType

    string

    No

    The type of the certificate for the HTTPS protocol. Valid values:

    • default: a default certificate.

    • extension: an extension certificate.

    default
    Http2Enabled

    boolean

    No

    Indicates whether HTTP/2 is enabled. This parameter applies only when you use the HTTPS protocol. Valid values:

    • true: enables HTTP/2.

    • false (default): disables HTTP/2.

    true
    Redirect

    object

    No

    The forwarding configuration.

    RequestHeaders

    array<object>

    No

    The custom header fields used to mark traffic that is processed by WAF.

    object

    No

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

    Note

    If the custom header field already exists in the request, the original value is overwritten with the specified value.

    Key

    string

    No

    The custom request header field.

    key1
    Value

    string

    No

    The value of the custom request header field.

    value1
    XffHeaderMode

    integer

    No

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

    • 0: WAF obtains the real IP address of the client from the request. Use this value when no Layer 7 proxy resides before WAF.

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

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

    0
    XffHeaders

    array

    No

    The custom header fields that are used to obtain the client IP address.

    Note

    This parameter is required only when XffHeaderMode is set to 2.

    string

    No

    The name of the custom header field.

    Note

    This parameter is required only when XffHeaderMode is set to 2.

    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

    Indicates whether persistent connections are enabled. Valid values:

    • true (default): enables persistent connections.

    • false: disables persistent connections.

    true
    KeepaliveRequests

    integer

    No

    The maximum number of requests that can be served through one persistent connection. Valid values: 60 to 1000.

    1000
    KeepaliveTimeout

    integer

    No

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

    15
    XffProto

    boolean

    No

    Indicates whether the X-Forwarded-Proto header is used to pass the protocol used by WAF. Valid values:

    • true (default): passes the protocol.

    • false: does not pass the protocol.

    true
    MaxBodySize

    integer

    No

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

    2
    RegionId

    string

    Yes

    The region of the WAF instance. Valid values:

    • cn-hangzhou: the Chinese mainland.

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

    cn-hangzhou
    CloudResourceId

    string

    No

    The ID of the cloud resource that is added to WAF.

    Note

    Call CreateCloudResource to add a cloud resource. The resource ID is included 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 ID of the cloud resource that is added to WAF.

    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 .
    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.