WAF / Client / create_rule

create_rule#

WAF.Client.create_rule(**kwargs)#

Note

This is AWS WAF Classic documentation. For more information, see AWS WAF Classic in the developer guide.

For the latest version of AWS WAF, use the AWS WAFV2 API and see the AWS WAF Developer Guide. With the latest version, AWS WAF has a single set of endpoints for regional and global use.

Creates a Rule, which contains the IPSet objects, ByteMatchSet objects, and other predicates that identify the requests that you want to block. If you add more than one predicate to a Rule, a request must match all of the specifications to be allowed or blocked. For example, suppose that you add the following to a Rule:

  • An IPSet that matches the IP address 192.0.2.44/32

  • A ByteMatchSet that matches BadBot in the User-Agent header

You then add the Rule to a WebACL and specify that you want to blocks requests that satisfy the Rule. For a request to be blocked, it must come from the IP address 192.0.2.44 and the User-Agent header in the request must contain the value BadBot.

To create and configure a Rule, perform the following steps:

  • Create and update the predicates that you want to include in the Rule. For more information, see CreateByteMatchSet, CreateIPSet, and CreateSqlInjectionMatchSet.

  • Use GetChangeToken to get the change token that you provide in the ChangeToken parameter of a CreateRule request.

  • Submit a CreateRule request.

  • Use GetChangeToken to get the change token that you provide in the ChangeToken parameter of an UpdateRule request.

  • Submit an UpdateRule request to specify the predicates that you want to include in the Rule.

  • Create and update a WebACL that contains the Rule. For more information, see CreateWebACL.

For more information about how to use the AWS WAF API to allow or block HTTP requests, see the AWS WAF Developer Guide.

See also: AWS API Documentation

Request Syntax

response = client.create_rule(
    Name='string',
    MetricName='string',
    ChangeToken='string',
    Tags=[
        {
            'Key': 'string',
            'Value': 'string'
        },
    ]
)
Parameters:

  • Name (string) –

    [REQUIRED]

    A friendly name or description of the Rule. You can’t change the name of a Rule after you create it.

  • MetricName (string) –

    [REQUIRED]

    A friendly name or description for the metrics for this Rule. The name can contain only alphanumeric characters (A-Z, a-z, 0-9), with maximum length 128 and minimum length one. It can’t contain whitespace or metric names reserved for AWS WAF, including “All” and “Default_Action.” You can’t change the name of the metric after you create the Rule.

  • ChangeToken (string) –

    [REQUIRED]

    The value returned by the most recent call to GetChangeToken.

  • Tags (list) –

    • (dict) –

      Note

      This is AWS WAF Classic documentation. For more information, see AWS WAF Classic in the developer guide.

      For the latest version of AWS WAF, use the AWS WAFV2 API and see the AWS WAF Developer Guide. With the latest version, AWS WAF has a single set of endpoints for regional and global use.

      A tag associated with an AWS resource. Tags are key:value pairs that you can use to categorize and manage your resources, for purposes like billing. For example, you might set the tag key to “customer” and the value to the customer name or ID. You can specify one or more tags to add to each AWS resource, up to 50 tags for a resource.

      Tagging is only available through the API, SDKs, and CLI. You can’t manage or view tags through the AWS WAF Classic console. You can tag the AWS resources that you manage through AWS WAF Classic: web ACLs, rule groups, and rules.

      • Key (string) – [REQUIRED]

      • Value (string) – [REQUIRED]

Return type:

dict

Returns:

Response Syntax

{
    'Rule': {
        'RuleId': 'string',
        'Name': 'string',
        'MetricName': 'string',
        'Predicates': [
            {
                'Negated': True|False,
                'Type': 'IPMatch'|'ByteMatch'|'SqlInjectionMatch'|'GeoMatch'|'SizeConstraint'|'XssMatch'|'RegexMatch',
                'DataId': 'string'
            },
        ]
    },
    'ChangeToken': 'string'
}

Response Structure

  • (dict) –

    • Rule (dict) –

      The Rule returned in the CreateRule response.

      • RuleId (string) –

        A unique identifier for a Rule. You use RuleId to get more information about a Rule (see GetRule), update a Rule (see UpdateRule), insert a Rule into a WebACL or delete a one from a WebACL (see UpdateWebACL), or delete a Rule from AWS WAF (see DeleteRule).

        RuleId is returned by CreateRule and by ListRules.

      • Name (string) –

        The friendly name or description for the Rule. You can’t change the name of a Rule after you create it.

      • MetricName (string) –

        A friendly name or description for the metrics for this Rule. The name can contain only alphanumeric characters (A-Z, a-z, 0-9), with maximum length 128 and minimum length one. It can’t contain whitespace or metric names reserved for AWS WAF, including “All” and “Default_Action.” You can’t change MetricName after you create the Rule.

      • Predicates (list) –

        The Predicates object contains one Predicate element for each ByteMatchSet, IPSet, or SqlInjectionMatchSet object that you want to include in a Rule.

        • (dict) –

          Note

          This is AWS WAF Classic documentation. For more information, see AWS WAF Classic in the developer guide.

          For the latest version of AWS WAF, use the AWS WAFV2 API and see the AWS WAF Developer Guide. With the latest version, AWS WAF has a single set of endpoints for regional and global use.

          Specifies the ByteMatchSet, IPSet, SqlInjectionMatchSet, XssMatchSet, RegexMatchSet, GeoMatchSet, and SizeConstraintSet objects that you want to add to a Rule and, for each object, indicates whether you want to negate the settings, for example, requests that do NOT originate from the IP address 192.0.2.44.

          • Negated (boolean) –

            Set Negated to False if you want AWS WAF to allow, block, or count requests based on the settings in the specified ByteMatchSet, IPSet, SqlInjectionMatchSet, XssMatchSet, RegexMatchSet, GeoMatchSet, or SizeConstraintSet. For example, if an IPSet includes the IP address 192.0.2.44, AWS WAF will allow or block requests based on that IP address.

            Set Negated to True if you want AWS WAF to allow or block a request based on the negation of the settings in the ByteMatchSet, IPSet, SqlInjectionMatchSet, XssMatchSet, RegexMatchSet, GeoMatchSet, or SizeConstraintSet. For example, if an IPSet includes the IP address 192.0.2.44, AWS WAF will allow, block, or count requests based on all IP addresses except 192.0.2.44.

          • Type (string) –

            The type of predicate in a Rule, such as ByteMatch or IPSet.

          • DataId (string) –

            A unique identifier for a predicate in a Rule, such as ByteMatchSetId or IPSetId. The ID is returned by the corresponding Create or List command.

    • ChangeToken (string) –

      The ChangeToken that you used to submit the CreateRule request. You can also use this value to query the status of the request. For more information, see GetChangeTokenStatus.

Exceptions

  • WAF.Client.exceptions.WAFStaleDataException

  • WAF.Client.exceptions.WAFInternalErrorException

  • WAF.Client.exceptions.WAFDisallowedNameException

  • WAF.Client.exceptions.WAFInvalidParameterException

  • WAF.Client.exceptions.WAFLimitsExceededException

  • WAF.Client.exceptions.WAFTagOperationException

  • WAF.Client.exceptions.WAFTagOperationInternalErrorException

  • WAF.Client.exceptions.WAFBadRequestException

Examples

The following example creates a rule named WAFByteHeaderRule.

response = client.create_rule(
    ChangeToken='abcd12f2-46da-4fdb-b8d5-fbd4c466928f',
    MetricName='WAFByteHeaderRule',
    Name='WAFByteHeaderRule',
)

print(response)

Expected Output:

{
    'ChangeToken': 'abcd12f2-46da-4fdb-b8d5-fbd4c466928f',
    'Rule': {
        'MetricName': 'WAFByteHeaderRule',
        'Name': 'WAFByteHeaderRule',
        'Predicates': [
            {
                'DataId': 'MyByteMatchSetID',
                'Negated': False,
                'Type': 'ByteMatch',
            },
        ],
        'RuleId': 'WAFRule-1-Example',
    },
    'ResponseMetadata': {
        '...': '...',
    },
}