hi,all, i have a question to trouble you.

a workstation named AAA, and open the ftp services to permit user download and upload files. i have root password.

a pc install windows 2k named BBB, someone install a serv-u ftp ( a ftp server software ) to transfer data. i don't have the administrators password.

On BBB:
user can use: ftp AAA to transfer data, i permit.

but i don't permit on AAA to use ftp BBB to transfer data.

i can delete the ftp command or chmod 500, but someone could also upload a ftp command. or rename ftp to another name.

so, i want to know how to deny someone use ftp on AAA ?
anyone can help me.