#%PAM-1.0
auth       sufficient   /lib/security/pam_userdb.so db=/etc/vsftpd/vsftpd_login
account sufficient /lib/security/pam_userdb.so db=/etc/vsftpd/vsftpd_login

session    optional     pam_keyinit.so    /lib/security/force revoke
auth       required     /lib/security/pam_listfile.so item=user sense=deny file=/etc/ftpusers onerr=succeed
auth       required     /lib/security/pam_shells.so
auth       include      system-auth
account       include      system-auth
session         include      system-auth
session    required    /lib/security/pam_loginuid.so