There is no command to limit the simultaneous connection of users

[a9v8i]

Hello, please put a switch to control the number of simultaneous connection sessions of users to dropbear.

[mkj]

Do you mean authenticated users or pre-auth?

[a9v8i]

Hello, yes, I mean users who are authenticated and their sessions cannot be controlled on dropbear.

This feature exists in ssh itself, which is limited by MaxSessions, but there is no such feature in dropbear.