Grafana Mimir Authentication

Hello

I would like to configure authentication for Grafana Mimir.

I would like to realize authtication for every tenant, so i would like to know how to do it?

In the documentation i have only this information : bearer authentication with only one token. it is not enough.

Perhaps i need to use specific authentication on my reverse proxy like ldap or other.

Could you give me more information.

Regards
Ludovic