ah ya vi como, para los ke no sepan ahi va:
Cautious system administrators may want only a few select system users to be able to connect to their proftpd server--all other users are to be denied access. The LOGIN command group is designed for just this scenario:
<Limit LOGIN>
AllowUser barb
AllowUser dave
AllowGroup ftpuser
DenyAll
</Limit>
la fuente es:
http://www.castaglia.org/proftpd/doc...WTO-Limit.html