Which authentication method is recommended for a relatively small and limited number of users?

The recommended authentication method for a relatively small and limited number of users is the use of local users. This approach allows for straightforward management and administration of access credentials without the need for external dependency on servers or complex infrastructure.

For smaller environments, where the number of users is modest, managing local user accounts directly on the SonicWall firewall simplifies configuration and ensures that the setup remains efficient and easy to control. Each user can have an individual account with specific credentials stored directly on the device, which can lead to quicker access and reduced complexity, as there's no need for extensive server or network configuration.

Other methods like RADIUS, LDAP, and Active Directory are typically better suited for larger organizations or scenarios where centralized management of numerous users is required. These methods involve additional layers of setup and maintenance that might be unnecessary for smaller setups, where the overhead might not justify their benefits.