Rate limit the requests to a login page from any IP address, user agent pair - Amazon WAF, Amazon Firewall Manager, Amazon Shield Advanced, and Amazon Shield network security director
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You can now use the updated experience to access Amazon WAF functionality anywhere in the console. For more details, see Working with the updated console experience.

Rate limit the requests to a login page from any IP address, user agent pair

To limit the number of requests to the login page on your website for IP address, user agent pairs that exceed your limit, set the request aggregation to Custom keys and provide the aggregation criteria.

The following JSON listing shows an example of this rule configuration. In this example, we've set the limit to 100 requests in any five minute period per IP address, user agent pair. 

{
  "Name": "test-rbr",
  "Priority": 0,
  "Action": {
    "Block": {}
  },
  "VisibilityConfig": {
    "SampledRequestsEnabled": true,
    "CloudWatchMetricsEnabled": true,
    "MetricName": "test-rbr"
  },
  "Statement": {
    "RateBasedStatement": {
      "Limit": 100,
      "EvaluationWindowSec": 300,
      "AggregateKeyType": "CUSTOM_KEYS",
      "CustomKeys": [
        {
          "Header": {
            "Name": "User-Agent",
            "TextTransformations": [
              {
                "Priority": 0,
                "Type": "NONE"
              }
            ]
          }
        },
        {
          "IP": {}
        }
      ],
      "ScopeDownStatement": {
        "ByteMatchStatement": {
          "FieldToMatch": {
            "UriPath": {}
          },
          "PositionalConstraint": "STARTS_WITH",
          "SearchString": "/login",
          "TextTransformations": [
            {
              "Type": "NONE",
              "Priority": 0
            }
          ]
        }
      }
    }
  }
}