Vendor-Specific Attributes (VSA): Return vendor-specific attributes (e.g. MikroTik, Cisco, Ubiquiti) in Access-Accept responses based on user roles, groups, or scopes
Configurable OTP mode: Use standard challenge-response or style
Configurable OTP challenge message via otp_challenge_message in config
Asynchronous/multi-request support: Multiple RADIUS requests are handled concurrently for high performance