/etc/rc.d/init.d/vsftpd — The initialization script (initscript) used by the systemctl command to start, stop, or reload vsftpd. See Section 12.2.4, “Starting and Stopping vsftpd ” for more information about using this script.

/etc/pam.d/vsftpd — The Pluggable Authentication Modules (PAM) configuration file for vsftpd. This file specifies the requirements a user must meet to login to the FTP server. For more information on PAM, refer to the Using Pluggable Authentication Modules (PAM) chapter of the Fedora 20 Managing Single Sign-On and Smart Cards guide.

/etc/vsftpd/vsftpd.conf — The configuration file for vsftpd. See Section 12.2.5, “ vsftpd Configuration Options” for a list of important options contained within this file.

/etc/vsftpd/ftpusers — A list of users not allowed to log into vsftpd. By default, this list includes the root, bin, and daemon users, among others.

/etc/vsftpd/user_list — This file can be configured to either deny or allow access to the users listed, depending on whether the userlist_deny directive is set to YES (default) or NO in /etc/vsftpd/vsftpd.conf. If /etc/vsftpd/user_list is used to grant access to users, the usernames listed must not appear in /etc/vsftpd/ftpusers.

/var/ftp/ — The directory containing files served by vsftpd. It also contains the /var/ftp/pub/ directory for anonymous users. Both directories are world-readable, but writable only by the root user.