# Login Authentication
This feature folllows MQTT protocol username/password authenticaton 5.4.1 Authentication of Clients by the Server (opens new window). It can be used by the Server for authentication and authorization.
User Login authorization configuration allows users to authenticate using a simple username and password.
# Configuration Items
| Name | Type | Description |
|---|---|---|
username | String | Username |
password | String | Password |
Write the username and password in the format below and save it to the nanomq_pwd.conf file.
username:password
Example
# # Write "username":"password" in this way.
admin: public
client: public
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TIP
The User Name MUST be a UTF-8 encoded string as defined in MQTT Standard.
In this configuration, there are two users, admin and client, both with the password public. So user admin and client are allowed to work with NanoMQ when allow_anonymous is false unless explicitly denied by the system.
And include it in nanomq.conf, as described in the Access Control Introduction.
Example:
password = {include "/etc/nanomq_pwd.conf"}
# Configure in KV Format
Users wishing to use the KV configuration format can refer to the following structure and write their configurations into the nanomq_old.conf file. The relevant settings will take effect after NanoMQ is restarted.
username=admin
password=public
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