---
title: "change-box-block-external-network"
slug: "change-box-block-external-network"
updated: 2026-09-17T09:48:02Z
published: 2026-09-17T09:48:02Z
canonical: "api.ncloud-docs.com/change-box-block-external-network"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://api.ncloud-docs.com/llms.txt
> Use this file to discover all available pages before exploring further.

# change-box-block-external-network

Available in VPC

Set whether to block external network connections from a box. This is an infrastructure change that takes some time, so it will be processed asynchronously.

## Request

This section describes the request format. The method and URI are as follows:

| Method | URI |
| --- | --- |
| POST | /api/v1/box/change-box-block-external-network |

### Request headers

For information about the headers common to all Datafence APIs, see [Datafence request headers](/docs/en/datafence-overview#%EC%9A%94%EC%B2%AD%ED%97%A4%EB%8D%94).

### Request body

You can include the following data in the body of your request:

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `fenceId` | Integer | Required | Datafence number - See [get-datafence](/docs/en/get-datafence). |
| `boxId` | Integer | Required | Box number - See [get-box-list](/docs/en/get-box-list). |
| `isBlock` | Boolean | Required | Whether external network is blocked - `true` \| `false` - `true`: blocked - `false`: allowed |

### Request example

The request example is as follows:

```
curl --location --request POST 'https://datafence.apigw.ntruss.com/api/v1/box/change-box-block-external-network' \
--header 'x-ncp-apigw-timestamp: {Timestamp}' \
--header 'x-ncp-iam-access-key: {Access Key}' \
--header 'x-ncp-apigw-signature-v2: {API Gateway Signature}' \
--data '{
  "fenceId": 26,
  "boxId": 74,
  "isBlock": true
}'
```

## Response

This section describes the response format.

### Response body

The response body includes the following data:

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `message` | String | - | API processing result message |

### Response status codes

For information about the HTTP status codes common to all Datafence APIs, see [Datafence API response status codes](/docs/en/datafence-overview#%EC%9D%91%EB%8B%B5%EC%83%81%ED%83%9C%EC%BD%94%EB%93%9C).

### Response example

The response example is as follows:

```
{
  "message": "Box network setting modification requested."
}
```