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=======================
Authentication backends
=======================
.. module:: django.contrib.auth.backends
:synopsis: Django's built-in authentication backend classes.
This document details the authentication backends that come with Django. For
information on how to use them and how to write your own authentication
backends, see the :ref:`Other authentication sources section
<authentication-backends>` of the :doc:`User authentication guide
</topics/auth>`.
Available authentication backends
=================================
The following backends are available in :mod:`django.contrib.auth.backends`:
.. class:: ModelBackend
This is the default authentication backend used by Django. It
authenticates using usernames and passwords stored in the
:class:`~django.contrib.auth.models.User` model.
.. class:: RemoteUserBackend
.. versionadded:: 1.1
Use this backend to take advantage of external-to-Django-handled
authentication. It authenticates using usernames passed in
:attr:`request.META['REMOTE_USER'] <django.http.HttpRequest.META>`. See
the :doc:`Authenticating against REMOTE_USER </howto/auth-remote-user>`
documentation.
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