Interface CfnRuleGroup.FieldToMatchProperty
- All Superinterfaces:
software.amazon.jsii.JsiiSerializable
- All Known Implementing Classes:
CfnRuleGroup.FieldToMatchProperty.Jsii$Proxy
- Enclosing class:
CfnRuleGroup
- In a rule statement, this is the part of the web request that you want AWS WAF to inspect. Include the single
FieldToMatch
type that you want to inspect, with additional specifications as needed, according to the type. You specify a single request component inFieldToMatch
for each rule statement that requires it. To inspect more than one component of the web request, create a separate rule statement for each component.
Example JSON for a QueryString
field to match:
"FieldToMatch": { "QueryString": {} }
Example JSON for a Method
field to match specification:
"FieldToMatch": { "Method": { "Name": "DELETE" } }
- In a logging configuration, this is used in the
RedactedFields
property to specify a field to redact from the logging records. For this use case, note the following: - Even though all
FieldToMatch
settings are available, the only valid settings for field redaction areUriPath
,QueryString
,SingleHeader
, andMethod
. - In this documentation, the descriptions of the individual fields talk about specifying the web request component to inspect, but for field redaction, you are specifying the component type to redact from the logs.
- If you have request sampling enabled, the redacted fields configuration for logging has no impact on sampling. The only way to exclude fields from request sampling is by disabling sampling in the web ACL visibility configuration.
Example:
// The code below shows an example of how to instantiate this type. // The values are placeholders you should change. import software.amazon.awscdk.services.wafv2.*; Object all; Object allQueryArguments; Object method; Object queryString; Object singleHeader; Object singleQueryArgument; Object uriPath; FieldToMatchProperty fieldToMatchProperty = FieldToMatchProperty.builder() .allQueryArguments(allQueryArguments) .body(BodyProperty.builder() .oversizeHandling("oversizeHandling") .build()) .cookies(CookiesProperty.builder() .matchPattern(CookieMatchPatternProperty.builder() .all(all) .excludedCookies(List.of("excludedCookies")) .includedCookies(List.of("includedCookies")) .build()) .matchScope("matchScope") .oversizeHandling("oversizeHandling") .build()) .headers(HeadersProperty.builder() .matchPattern(HeaderMatchPatternProperty.builder() .all(all) .excludedHeaders(List.of("excludedHeaders")) .includedHeaders(List.of("includedHeaders")) .build()) .matchScope("matchScope") .oversizeHandling("oversizeHandling") .build()) .ja3Fingerprint(JA3FingerprintProperty.builder() .fallbackBehavior("fallbackBehavior") .build()) .jsonBody(JsonBodyProperty.builder() .matchPattern(JsonMatchPatternProperty.builder() .all(all) .includedPaths(List.of("includedPaths")) .build()) .matchScope("matchScope") // the properties below are optional .invalidFallbackBehavior("invalidFallbackBehavior") .oversizeHandling("oversizeHandling") .build()) .method(method) .queryString(queryString) .singleHeader(singleHeader) .singleQueryArgument(singleQueryArgument) .uriPath(uriPath) .build();
- See Also:
-
Nested Class Summary
Nested ClassesModifier and TypeInterfaceDescriptionstatic final class
A builder forCfnRuleGroup.FieldToMatchProperty
static final class
An implementation forCfnRuleGroup.FieldToMatchProperty
-
Method Summary
Modifier and TypeMethodDescriptionbuilder()
default Object
Inspect all query arguments.default Object
getBody()
Inspect the request body as plain text.default Object
Inspect the request cookies.default Object
Inspect the request headers.default Object
Available for use with Amazon CloudFront distributions and Application Load Balancers.default Object
Inspect the request body as JSON.default Object
Inspect the HTTP method.default Object
Inspect the query string.default Object
Inspect a single header.default Object
Inspect a single query argument.default Object
Inspect the request URI path.Methods inherited from interface software.amazon.jsii.JsiiSerializable
$jsii$toJson
-
Method Details
-
getAllQueryArguments
Inspect all query arguments.- See Also:
-
getBody
Inspect the request body as plain text.The request body immediately follows the request headers. This is the part of a request that contains any additional data that you want to send to your web server as the HTTP request body, such as data from a form.
AWS WAF does not support inspecting the entire contents of the web request body if the body exceeds the limit for the resource type. When a web request body is larger than the limit, the underlying host service only forwards the contents that are within the limit to AWS WAF for inspection.
- For Application Load Balancer and AWS AppSync , the limit is fixed at 8 KB (8,192 bytes).
- For CloudFront, API Gateway, Amazon Cognito, App Runner, and Verified Access, the default limit is 16 KB (16,384 bytes), and you can increase the limit for each resource type in the web ACL
AssociationConfig
, for additional processing fees.
For information about how to handle oversized request bodies, see the
Body
object configuration.- See Also:
-
getCookies
Inspect the request cookies.You must configure scope and pattern matching filters in the
Cookies
object, to define the set of cookies and the parts of the cookies that AWS WAF inspects.Only the first 8 KB (8192 bytes) of a request's cookies and only the first 200 cookies are forwarded to AWS WAF for inspection by the underlying host service. You must configure how to handle any oversize cookie content in the
Cookies
object. AWS WAF applies the pattern matching filters to the cookies that it receives from the underlying host service.- See Also:
-
getHeaders
Inspect the request headers.You must configure scope and pattern matching filters in the
Headers
object, to define the set of headers to and the parts of the headers that AWS WAF inspects.Only the first 8 KB (8192 bytes) of a request's headers and only the first 200 headers are forwarded to AWS WAF for inspection by the underlying host service. You must configure how to handle any oversize header content in the
Headers
object. AWS WAF applies the pattern matching filters to the headers that it receives from the underlying host service.- See Also:
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getJa3Fingerprint
Available for use with Amazon CloudFront distributions and Application Load Balancers.Match against the request's JA3 fingerprint. The JA3 fingerprint is a 32-character hash derived from the TLS Client Hello of an incoming request. This fingerprint serves as a unique identifier for the client's TLS configuration. AWS WAF calculates and logs this fingerprint for each request that has enough TLS Client Hello information for the calculation. Almost all web requests include this information.
You can use this choice only with a string match
ByteMatchStatement
with thePositionalConstraint
set toEXACTLY
.You can obtain the JA3 fingerprint for client requests from the web ACL logs. If AWS WAF is able to calculate the fingerprint, it includes it in the logs. For information about the logging fields, see Log fields in the AWS WAF Developer Guide .
Provide the JA3 fingerprint string from the logs in your string match statement specification, to match with any future requests that have the same TLS configuration.
- See Also:
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getJsonBody
Inspect the request body as JSON.The request body immediately follows the request headers. This is the part of a request that contains any additional data that you want to send to your web server as the HTTP request body, such as data from a form.
AWS WAF does not support inspecting the entire contents of the web request body if the body exceeds the limit for the resource type. When a web request body is larger than the limit, the underlying host service only forwards the contents that are within the limit to AWS WAF for inspection.
- For Application Load Balancer and AWS AppSync , the limit is fixed at 8 KB (8,192 bytes).
- For CloudFront, API Gateway, Amazon Cognito, App Runner, and Verified Access, the default limit is 16 KB (16,384 bytes), and you can increase the limit for each resource type in the web ACL
AssociationConfig
, for additional processing fees.
For information about how to handle oversized request bodies, see the
JsonBody
object configuration.- See Also:
-
getMethod
Inspect the HTTP method.The method indicates the type of operation that the request is asking the origin to perform.
- See Also:
-
getQueryString
Inspect the query string.This is the part of a URL that appears after a
?
character, if any.- See Also:
-
getSingleHeader
Inspect a single header.Provide the name of the header to inspect, for example,
User-Agent
orReferer
. This setting isn't case sensitive.Example JSON:
"SingleHeader": { "Name": "haystack" }
Alternately, you can filter and inspect all headers with the
Headers
FieldToMatch
setting.- See Also:
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getSingleQueryArgument
Inspect a single query argument.Provide the name of the query argument to inspect, such as UserName or SalesRegion . The name can be up to 30 characters long and isn't case sensitive.
Example JSON:
"SingleQueryArgument": { "Name": "myArgument" }
- See Also:
-
getUriPath
Inspect the request URI path.This is the part of the web request that identifies a resource, for example,
/images/daily-ad.jpg
.- See Also:
-
builder
-