Still on Drupal 7? Security support for Drupal 7 ended on 5 January 2025. Please visit our Drupal 7 End of Life resources page to review all of your options.
Sometimes you want to directly share information between two applications without a user getting in the way. For these scenarios, you can use the OAuth 2.0 client credentials flow.
The Registration Limit module limits/blocks registration of new user accounts
when the user's IP address was recently used in former logins to existing
accounts.