Deny

Overview

The Deny Traffic Policy action enables you to reject incoming requests on your endpoints before they make it to your upstream service.

Configuration Reference

This is the Traffic Policy configuration reference for this action.

Action Type

deny

Configuration Fields

Parameter	Type	Description
status_code	int	Response status code. Default is 999.

Behavior

When this action is executed, the upstream server is never reached and a response is immediately returned and no further actions or rules in the policy configuration will be executed.

Custom Content

The deny traffic policy action will not send back a response body to the client. To send back a response body, use the custom-response action.

Examples

Deny traffic with a 404 status code

The following Traffic Policy configuration will deny all inbound traffic with a 404 on your endpoint.

Example Traffic Policy Document

YAML

---
on_http_request:
  - actions:
      - type: "deny"
        config:
          status_code: 404

JSON

{
  "on_http_request": [
    {
      "actions": [
        {
          "type": "deny",
          "config": {
            "status_code": 404
          }
        }
      ]
    }
  ]
}

Example Request

$ curl https://example.ngrok.app

HTTP/2 404 Not Found

In this example, we attempt to connect to example.ngrok.app using the curl command and ngrok immediately closes the connection with a 404 status code.

Action Result Variables

The following variables are made available for use in subsequent expressions and CEL interpolations after the action has run. Variable values will only apply to the last action execution, results are not concatenated.

This action does not set any variables after it has been executed.