#### Remote Authentication Support ([#2328](https://github.com/netbox-community/netbox/issues/2328))
Several new configuration parameters provide support for authenticating an incoming request based on the value of a specific HTTP header. This can be leveraged to employ remote authentication via an nginx or Apache plugin, directing NetBox to create and configure a local user account as needed. The configuration parameters are:
*`REMOTE_AUTH_ENABLED` - Enables remote authentication (disabled by default)
*`REMOTE_AUTH_HEADER` - The name of the HTTP header which conveys the username
*`REMOTE_AUTH_AUTO_CREATE_USER` - Enables the automatic creation of new users (disabled by default)
*`REMOTE_AUTH_DEFAULT_GROUPS` - A list of groups to assign newly created users
*`REMOTE_AUTH_DEFAULT_PERMISSIONS` - A list of permissions to assign newly created users
If further customization of remote authentication is desired (for instance, if you want to pass group/permission information via HTTP headers as well), NetBox allows you to inject a custom [Django authentication backend](https://docs.djangoproject.com/en/stable/topics/auth/customizing/) to retain full control over the authentication and configuration of remote users.
This release introduces support for custom plugins, which can be used to extend NetBox's functionality beyond what the core product provides. For example, plugins can be used to:
* Add new Django models
* Provide new views with custom templates
* Inject custom template into object views
* Introduce new API endpoints
* Add custom request/response middleware
For NetBox plugins to be recognized, the `PLUGINS_ENABLED` configuration parameter must be set to true. (Plugin support is disabled by default). Plugins can be configured under the `PLUGINS_CONFIG` parameter. More information can be found the in the [plugins documentation](https://netbox.readthedocs.io/en/stable/plugins/).
* The `_choices` API endpoints have been removed. Instead, use an `OPTIONS` request to a model's endpoint to view the available values for all fields. ([#3416](https://github.com/netbox-community/netbox/issues/3416))
* [#4081](https://github.com/netbox-community/netbox/issues/4081) - The `family` field has been removed from the Aggregate, Prefix, and IPAddress models
