編輯 /etc/pam.d/vsftpd:

取消註釋所有 將配置虛擬使用者新增兩行中的required改為sufficient即可

#%PAM-1.0
auth sufficient /lib64/security/pam_userdb.so db=/etc/vsftpd/ftpuser
account sufficient /lib64/security/pam_userdb.so db=/etc/vsftpd/ftpuser

session    optional     pam_keyinit.so    force revoke
auth       required     pam_listfile.so item=user sense=deny file=/etc/vsftpd/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