---
title: How to connect to the default MQTT network
description: This page explains how to connect to the default MQTT network
tags: iot iot-hub mqtt mqtt-network
dates:
  validation: 2025-07-16
  posted: 2019-09-01
  validation_frequency: 12
---
import Requirements from '@macros/iam/requirements.mdx'


The default network, which is automatically created with a hub, is a **MQTT network**. The default network, cannot be deleted.

<Requirements />

- A Scaleway account logged into the [console](https://console.scaleway.com)
- [Owner](/iam/concepts/#owner) status or [IAM permissions](/iam/concepts/#permission) allowing you to perform actions in the intended Organization
- [Created an IoT Hub](/iot-hub/how-to/create-hub/)

1. [Add a Hub device](/iot-hub/how-to/add-device/) if you haven't already done so.

    To keep this tutorial simple, choose to `Allow Insecure` connections. Insecure connections allow connections to the hub without encryption layer.
2. Configure the physical device (or client) to connect through the network, using the following parameters:
    - **Host**: The network endpoint.
    - **Port**: Use `1883` for plaintext or `8883` for TLS.
    - **MQTT Username**: The *device ID* from the device you created earlier.
    - If your client asks for a password, just pass in an empty string.

    <Message type="note">
        If you have configured your device to force mTLS (`Deny Insecure` connections), you will also need to provide the device certificate and private key, so that during the TLS handshake, the hub will be able to verify the device identity.
    </Message>
3. Connect and exchange messages.

    Some networks support topic prefixes, but the default networks do not. The whole "topic space" is available to MQTT clients.

Read our [introduction blog post](https://www.scaleway.com/en/blog/scaleway-iot-hub-introduction-to-mqtt-topics/) to understand more about MQTT topics.