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Add note to rate limiting parameters
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‎src/content/docs/waf/rate-limiting-rules/parameters.mdx‎

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@@ -36,27 +36,27 @@ Set of parameters defining how Cloudflare tracks the request rate for the rule.
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Use one or more of the following characteristics:
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| Dashboard value | API value | Notes |
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| ----------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
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| N/A(implicitly included) | `cf.colo.id`(mandatory) | [Do not use in expressions](#do-not-use-cfcoloid-as-a-field-in-expressions) |
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| IP | `ip.src` | [Incompatible with **IP with NAT support**](#incompatible-characteristics) |
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| IP with NAT support | `cf.unique_visitor_id` | [Incompatible with **IP**](#incompatible-characteristics) |
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| **Header value of** (enter header name) | `http.request.headers["<header_name>"]` | [Use lowercased header name in API](#use-a-lowercased-header-name-for-api-users) and [Missing field versus empty value](#missing-field-versus-empty-value) |
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| **Cookie value of** (enter cookie name) | `http.request.cookies["<cookie_name>"]` | [Recommended configurations](#recommended-configurations-when-using-cookie-value-of) and [Missing field versus empty value](#missing-field-versus-empty-value) |
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| **Query value of** (enter parameter name) | `http.request.uri.args["<query_param_name>"]` | [Missing field versus empty value](#missing-field-versus-empty-value) |
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| Dashboard value | API value | Notes |
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| ----------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
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| N/A(implicitly included) | `cf.colo.id`(mandatory) | [Do not use in expressions](#do-not-use-cfcoloid-as-a-field-in-expressions) |
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| IP | `ip.src` | [Incompatible with **IP with NAT support**](#incompatible-characteristics) |
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| IP with NAT support | `cf.unique_visitor_id` | [Incompatible with **IP**](#incompatible-characteristics) |
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| **Header value of** (enter header name) | `http.request.headers["<header_name>"]` | [Use lowercased header name in API](#use-a-lowercased-header-name-for-api-users) and [Missing field versus empty value](#missing-field-versus-empty-value) |
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| **Cookie value of** (enter cookie name) | `http.request.cookies["<cookie_name>"]` | [Recommended configurations](#recommended-configurations-when-using-cookie-value-of) and [Missing field versus empty value](#missing-field-versus-empty-value) |
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| **Query value of** (enter parameter name) | `http.request.uri.args["<query_param_name>"]` | [Missing field versus empty value](#missing-field-versus-empty-value) |
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| **Host** | `http.host` |
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| **Path** | `http.request.uri.path` |
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| **AS Num** | `ip.geoip.asnum` |
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| **Country** | `ip.geoip.country` |
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| **JA3 Fingerprint** | `cf.bot_management.ja3_hash` |
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| **JA4** | `cf.bot_management.ja4` |
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| **JSON string value of** (enter key) | `lookup_json_string(http.request.body.raw, "<key>")` | [Missing field versus empty value](#missing-field-versus-empty-value) and [`lookup_json_string()` function reference](/ruleset-engine/rules-language/functions/#lookup_json_string) |
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| **JSON integer value of** (enter key) | `lookup_json_integer(http.request.body.raw, "<key>")` | [Missing field versus empty value](#missing-field-versus-empty-value) and [`lookup_json_integer()` function reference](/ruleset-engine/rules-language/functions/#lookup_json_integer) |
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| **Form input value of** (enter field name) | `http.request.body.form["<input_field_name>"]` | [Missing field versus empty value](#missing-field-versus-empty-value) |
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| **JWT claim of** (enter token configuration ID, claim name) | `lookup_json_string(http.request.jwt.claims["<token_configuration_id>"][0], "<claim_name>")` | [Missing field versus empty value](#missing-field-versus-empty-value) and [JWT Validation reference](/api-shield/security/jwt-validation/transform-rules/) |
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| **JSON string value of** (enter key) | `lookup_json_string(http.request.body.raw, "<key>")` | [Missing field versus empty value](#missing-field-versus-empty-value) and [`lookup_json_string()` function reference](/ruleset-engine/rules-language/functions/#lookup_json_string) |
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| **JSON integer value of** (enter key) | `lookup_json_integer(http.request.body.raw, "<key>")` | [Missing field versus empty value](#missing-field-versus-empty-value) and [`lookup_json_integer()` function reference](/ruleset-engine/rules-language/functions/#lookup_json_integer) |
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| **Form input value of** (enter field name) | `http.request.body.form["<input_field_name>"]` | [Missing field versus empty value](#missing-field-versus-empty-value) |
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| **JWT claim of** (enter token configuration ID, claim name) | `lookup_json_string(http.request.jwt.claims["<token_configuration_id>"][0], "<claim_name>")` | [Requirements for claims in JWT](#requirements-for-using-claims-inside-a-json-web-token-jwt), [missing field versus empty value](#missing-field-versus-empty-value) and [JWT Validation reference](/api-shield/security/jwt-validation/transform-rules/) |
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| **Body** | `http.request.body.raw` |
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| **Body size** (select operator, enter size) | `http.request.body.size` |
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| **Custom** (enter expression) | Enter a custom expression. You can use a function such as `substring()` or `lower()`, or enter a more complex expression. | [Functions](/ruleset-engine/rules-language/functions/) |
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| **Custom** (enter expression) | Enter a custom expression. You can use a function such as `substring()` or `lower()`, or enter a more complex expression. | [Functions](/ruleset-engine/rules-language/functions/) |
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The available characteristics depend on your Cloudflare plan. Refer to [Availability](/waf/rate-limiting-rules/#availability) for more information.
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- Create a [custom rule](/waf/custom-rules/) that blocks requests with more than one value for the cookie.
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- Validate the cookie value at the origin before performing any demanding server operations.
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### Requirements for using claims inside a JSON Web Token (JWT)
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To use claims inside a JSON Web Token (JWT), you must first set up a [token validation configuration](/api-shield/security/jwt-validation/configure/) in API Shield.
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## Configuration restrictions
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- If the rule expression [includes IP lists](/waf/tools/lists/use-in-expressions/), you must enable the **Also apply rate limiting to cached assets** parameter.

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