Edit file File name : pure-ftpd Content :#%PAM-1.0 # Sample PAM configuration file for Pure-FTPd. # Install it in /etc/pam.d/pure-ftpd or add to /etc/pam.conf auth required pam_listfile.so item=user sense=deny file=/etc/ftpusers onerr=succeed auth required pam_shells.so auth required pam_nologin.so account required pam_stack.so service=system-auth password required pam_stack.so service=system-auth session required pam_stack.so service=system-auth Save