Security & Authentication
Firewalls, providers, encoders, voters, authenticators, JWT, OAuth2, access control
1What is the main role of a firewall in Symfony's Security component?
What is the main role of a firewall in Symfony's Security component?
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A firewall in Symfony defines a security zone for a part of the application. It determines how users are authenticated (form, token, API key) and which URLs are protected. Each firewall can have its own authentication configuration and user provider.
2What is a User Provider in Symfony Security?
What is a User Provider in Symfony Security?
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A User Provider is responsible for loading user information from a data source (database, LDAP, external API). It implements the UserProviderInterface and provides methods to load a user by identifier or refresh user data from the session.
3Which interface must a User class implement to be used with Symfony Security?
Which interface must a User class implement to be used with Symfony Security?
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The User class must implement UserInterface which defines essential methods: getUserIdentifier() for the unique identifier, getRoles() for roles, and eraseCredentials() to erase sensitive data. PasswordAuthenticatedUserInterface is also required for password authentication.
How to define role-based access control in security.yaml?
What is the difference between authentication and authorization in Symfony Security?
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