Configure Vsftpd virtual users in CentOS6.6

Configure Vsftpd virtual users in CentOS6.6
# Install a software packageyum-yinstallvsftpddb4*# Disable SELinuxvim/etc/sysconfig/selinuxSELINUX=permissive# Enter the command line to immediately apply the SELinux Configurationgetenforce0# Firewall allows port 22iptables-AINPUT-mstate--stateNEW-mtcp-ptcp--dport21-jACCEPT# Create a virtual user login file, base behavior user, even number of behavior passwords, can only be written in this way, otherwise the system does not recognizevim/etc/vsftpd/logins.txtuploadpassworddownloadpasswordadminftppassword# Generate a password authentication Filedb_load-T-thash-f/etc/vsftpd/logins.txt/etc/vsftpd/vsftpd_logins.dbchmod600/etc/vsftpd/vsftpd_logins.db# Create a virtual user authentication Filevim/etc/pam.d/vsftpd.vuauthrequired/lib64/security/pam_userdb.sodb=/etc/vsftpd/vsftpd_loginsaccountrequired/lib64/security/pam_userdb.sodb=/etc/vsftpd/vsftpd_logins# The 64-bit system is/lib64/security/pam_userdb, and the 32-bit system is/lib/security/pam_userdb.# Creating a virtual useruseradd-d/home/virtualuser-s/sbin/nologinvirtualuserchmod777/home/virtualuser# Grant 777 permissions or the user cannot access# Modifying the master configuration filevim/etc/vsftpd/vsftpd.confanonymous_enable=NO# Of course, you can set it to YES and allow anonymous users to log on, but it is not recommended.local_enable=YES# It must be set to YES because the virtual user is mapped to a local user for access.local_write=NO# Local users are not allowed to writeguest_enable=YES# Enable virtual usersguest_username=virtualuser# Ing virtual userspam_service_name=vsftpd.vu# Ftp authentication Fileuser_config_dir=/etc/vsftpd/vsftpd_user_conf# Assign different permissions to different users# Create a virtual user configuration foldermkdir/etc/vsftpd/vsftpd_user_confcd/etc/vsftpd/vsftpd_user_conftouchuploaddownloadadminftpThe login name must be the same as the logins.txt file.# Download users can only download:vimdownloadlocal_root=/home/virtualuseranon_world_readable_only=NO# The upload user can only upload configurations:vimuploadlocal_root=/home/virtualuserdownload_enable=NOwrite_enable=YESanon_upload_enable=YES# Adminftp user ownership Configuration:vimadminlocal_root=/home/virtualuserdownload_enable=YESwrite_enable=YESanon_upload_enable=YESanon_mkdir_write_enable=YESanon_other_write_enable=YES# Start the service, test the virtual user, and verify the effect;servicevsftpdstartchkconfigvsftpdonftplocalhost