Current File : //etc/pam.d/proftpd

#%PAM-1.0
session    optional     pam_keyinit.so force revoke
auth       required     pam_listfile.so item=user sense=deny file=/etc/ftpusers onerr=succeed
auth       required     pam_shells.so
auth       include      password-auth
account    include      password-auth
session    required     pam_loginuid.so
session    include      password-auth