# Cross Domain Authentication

## Presentation

Cross Domain Authentication (CDA)

## Configuration

Go in Manager, `General Parameters` » `Cookies` » `Multiple domains` and set to `On`.

To use this feature only locally, edit `lemonldap-ng.ini` in section [all]:

    [all]
    cda = 1

Attention

If your handler is being served by Nginx, you have to uncomment the following lines in your nginx configuration file:

    # If CDA is used, uncomment this
    auth_request_set $cookie_value $upstream_http_set_cookie;
    add_header Set-Cookie $cookie_value;

### Handlers

Choose “CDA” as type for each virtualHost concerned by CDA (ie not in main domain).