ビルトイン認証の利用
If you don't use a centralized, external system for your users' identity, you can use built-in authentication to allow GitHub Enterprise Server to manage accounts and perform local authentication.
ビルトイン認証の設定
When you use the default authentication method, all authentication details are stored on GitHub Enterprise Serverインスタンス.
Inviting people to use your instance
When you use built-in authentication for GitHub Enterprise Server, you can invite people by email address to create a user account on your instance.
認証のないサインアップの無効化
If you're using built-in authentication for GitHub Enterprise Serverインスタンス, you can block unauthenticated people from creating new user accounts on your instance.