Custom authentication in laravel 5.4?

Question

Laravel

You need to do custom authentication.
After entering the login and password, the data is sent to a third-party service (otrs), where the user is authenticated. Then, if successful, certain data is returned and written to the session.
I can't figure out how to override the default authentication.
How do I indicate that the user has authenticated?

Answer 1

Not authorization, but authentication. The documentation says that .

Answer 2

The most adequate variant - OAuth2. There are a lot of packages for this.