What authentication method is ideal for a small amount of users?

The local database authentication method is ideal for a small number of users due to its simplicity and ease of management. In this approach, user credentials are stored directly on the SonicWall device itself, which allows for quick access and straightforward configuration. This method does not require additional infrastructure, making it suitable for small setups where the number of users is minimal.

In scenarios with a limited user base, maintaining a local database streamlines authentication processes without the overhead of integrating external services or protocols. Organizations with fewer users can easily add, modify, or remove accounts directly from the device's administrative interface, enhancing efficiency and control without the need for complex server configurations or dependencies.

Other methods like RADIUS or LDAP are designed for larger environments where centralized user management and scalability are essential. They typically require additional setup, such as configuring external servers, which may be unnecessary for small environments. Multicast, on the other hand, is not related to user authentication but is used for network communication and data distribution, making it irrelevant in this context.