Simple y cortito. Recién necesitaba restringir el acceso a usuarios por ssh, así que una rápida revisada al man de sshd_config me dio la respuesta: AllowUsers This keyword can be followed by a list of user name patterns, separated by spaces. If specified, login is allowed only for user names that match one of the patterns. Only user names are valid; a numerical user ID is not recognized. By default, login is allowed for all users. If the pattern takes the form USER@HOST then USER and HOST are separately checked, restricting logins to particu- lar users from particular hosts. The allow/deny directives are processed in the following order: DenyUsers, AllowUsers, DenyGroups, and finally AllowGroups. See PATTERNS in ssh_config(5) for more information on patterns. Entonces, esto es así: Si sólo queremos que se puedan loggear determinados usuarios…
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