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26.2.5.2. Log In Options and Access Controls
The following is a list of directives which control the login behavior and access control mechanisms.
anonymous_enable
— When enabled, anonymous users are allowed to log in. The usernamesanonymous
andftp
are accepted.The default value isYES
.Refer to Section 26.2.5.3, “Anonymous User Options” for a list of directives affecting anonymous users.banned_email_file
— If thedeny_email_enable
directive is set toYES
, this directive specifies the file containing a list of anonymous email passwords which are not permitted access to the server.The default value is/etc/vsftpd.banned_emails
.banner_file
— Specifies the file containing text displayed when a connection is established to the server. This option overrides any text specified in theftpd_banner
directive.There is no default value for this directive.cmds_allowed
— Specifies a comma-delimited list of FTP commands allowed by the server. All other commands are rejected.There is no default value for this directive.deny_email_enable
— When enabled, any anonymous user utilizing email passwords specified in the/etc/vsftpd.banned_emails
are denied access to the server. The name of the file referenced by this directive can be specified using thebanned_email_file
directive.The default value isNO
.ftpd_banner
— When enabled, the string specified within this directive is displayed when a connection is established to the server. This option can be overridden by thebanner_file
directive.By defaultvsftpd
displays its standard banner.local_enable
— When enabled, local users are allowed to log into the system.The default value isYES
.Refer to Section 26.2.5.4, “Local User Options” for a list of directives affecting local users.pam_service_name
— Specifies the PAM service name forvsftpd
.The default value isftp
. On Red Hat Enterprise Linux 5.10, this option is set tovsftpd
in the configuration file.tcp_wrappers
— When enabled, TCP wrappers are used to grant access to the server. If the FTP server is configured on multiple IP addresses, theVSFTPD_LOAD_CONF
option can be used to load different configuration files based on the IP address being requested by the client.The default value isNO
. On Red Hat Enterprise Linux 5.10, this option is set toYES
in the configuration file.Refer to Section 48.5, “TCP Wrappers and xinetd” for more information about TCP wrappers.userlist_deny
— When used in conjunction with theuserlist_enable
directive and set toNO
, all local users are denied access unless the username is listed in the file specified by theuserlist_file
directive. Because access is denied before the client is asked for a password, setting this directive toNO
prevents local users from submitting unencrypted passwords over the network.The default value isYES
.userlist_enable
— When enabled, the users listed in the file specified by theuserlist_file
directive are denied access. Because access is denied before the client is asked for a password, users are prevented from submitting unencrypted passwords over the network.The default value isNO
. On Red Hat Enterprise Linux 5.10, this option is set toYES
in the configuration file.userlist_file
— Specifies the file referenced byvsftpd
when theuserlist_enable
directive is enabled.The default value is/etc/vsftpd.user_list
and is created during installation.