Vsftpd passive mode and Active Mode

Vsftp files and directories
Main Program of/usr/sbin/vsftp
/Etc/rc. d/init. d/vsftp Startup Script
/Etc/vsftpd. conf vsftp configuration file
/Etc/pamd/vsftpd PAM Authentication File
/Etc/vsftpd. ftpuser prohibit ftp users
/Etc/vsftpd. user_list list of users that are prohibited or permitted to use ftp

/Var/FTP Anonymous home directory
/Varftp/pub FTP Anonymous upload main directory

Start vsftp
Standalone Mode
Used for environments with frequent ftp access. The vsftp process always runs the listening port.
Service vsftp START | stop | restart | status
/Etc/rc. d/init. d/vsftpd START | stop | restart
Or add Listen = yes to/etc/vsftpd. conf to run with standalone.
Run in the inet. d daemon
Used to run vsftp In the inet. d daemon when FTP traffic is small
Run the script in/etc/inet. d/vsftp.

Vsftp configuration file/etc/vsftpd. conf

Active Mode settings
Port_enable = Yes enable active mode
Connect_from_port_20 = yes whether to enable the default port 20 listener when active mode is enabled
Ftp_date_port = % portnumber % the previous option uses the No parameter to specify the data transmission Port

Passive Mode
Pasv_enable = Yes enable Passive Mode
Pasv_min_port = % Number % passive mode lowest Port
Pasv_max_port = % Number % maximum port in passive mode

Anonymous upload settings
Anonymous_enable = Yes enable Anonymous Account
Anon_world_readable_only = No disable anonymous global browsing
Anon_upload_enable = Yes anonymous upload Enabled
Anon_mkdir_write_enable = Yes allows anonymous users to create directories
Write_enable = yes. The global write permission is enabled.

Restrict local users to access the file system
Chroot_local_user = Yes restrict local user browsing to its FTP root directory

Restrict some users to access the file system
Chroot_list_enable = Yes enable list (it cannot be enabled together with the previous command)
Chroot_list_file = % file path % restrict user list files

Connection restrictions
Max_client = % Number % maximum number of connections
Max_per_ip = % Number % maximum number of connections per IP
Anon_max_rate = % Number % anonymous user maximum rate unit: kbit/s
Local_max_rate = % Number % Local User Maximum rate unit: kbps

User_config_dir = % file path %/% username % set the connection rate for different users

% Username % file content: local_max_rate = % Number %

User home directory settings

The local user's home directory is defined in the/etc/passwd file.
FTP user: ________ is the definition line.

The FTP home directory for global redirection of localuser
Local_root = % PATH %

Security Settings
Hide_ids = Yes hides the UID and gid of a user.

Change Original banner
Ftpd_banner = % message %
Or
Banner_file = % file path %

Virtual FTP site settings
First, create two conf files.
# Cp/etc/vsftpd. CONF/etc/vsftp/vsftp2.conf
Create a home directory for ftp2
# Mkdir/var/ftp2
# Useradd-D/var/ftp2-M ftp2

# Service vsftpd restart