Interface CfnWebACL.IJA4FingerprintProperty
Available for use with Amazon CloudFront distributions and Application Load Balancers.
Namespace: Amazon.CDK.AWS.WAFv2
Assembly: Amazon.CDK.Lib.dll
Syntax (csharp)
public interface CfnWebACL.IJA4FingerprintPropertySyntax (vb)
Public Interface CfnWebACL.IJA4FingerprintPropertyRemarks
Match against the request's JA4 fingerprint. The JA4 fingerprint is a 36-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 <code>ByteMatchStatement</code> with the <code>PositionalConstraint</code> set to <code>EXACTLY</code> .
You can obtain the JA4 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 JA4 fingerprint string from the logs in your string match statement specification, to match with any future requests that have the same TLS configuration.
ExampleMetadata: fixture=_generated
Examples
// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
using Amazon.CDK.AWS.WAFv2;
var jA4FingerprintProperty = new JA4FingerprintProperty {
FallbackBehavior = "fallbackBehavior"
};Synopsis
Properties
| FallbackBehavior | The match status to assign to the web request if the request doesn't have a JA4 fingerprint. |
Properties
FallbackBehavior
The match status to assign to the web request if the request doesn't have a JA4 fingerprint.
string FallbackBehavior { get; }Property Value
Remarks
You can specify the following fallback behaviors: