"Linux Rookie 2" Vsftpd

1. What is FTP

2. Install FTP

Yum Install Vsftpd-y

Systemctl Start VSFTPD

Systemctl Stop Firewalld

Systemctl Enable VSFTPD

Setenforce 0

LFTP IP can be logged in and displayed, indicating that the installation method succeeds

3.VSFTPD File Information

/var/ftp Default Publishing directory

/etc/vsftpd Configuration Directory

Configuration parameters for 4.VSFTPD services

1) Anonymous user settings

Anonymous_enable=yes|no Anonymous User Login Restrictions

< anonymous user uploads >

Vim/etc/vsftpd/vsftpd.conf

Write_enable=yes

Anon_upload_enable=yes

Chgrp ftp/var/ftp/pub

chmod 775/var/ftp/pub

< anonymous user home directory modification >

Anon_root=/directory

< anonymous user upload file default permissions modification >

Anon_umask=xxx

< anonymous user creation directory >

Anon_mkdir_write_enable=yes|no

< anonymous user downloads >

Anon_world_readable_only=yes | No (setting parameter value no means anonymous user can download)

< anonymous user Delete >

Anon_other_write_enable=yes|no

< user identity modification used by anonymous users >

Chown_uploads=yes

Chown_username=student

< Max upload rate >

anon_max_rate=102400

< maximum number of links >

Max_clients=2 allows up to two hosts to be connected

2) Local User settings

Local_enable=yes|no Local User logon restrictions

Write_enable=yes|no Local User Write permission restrictions

< local user home directory modification >

Local_root=/directory

< restrict local user browsing/directory >

All users are locked in their home directory

Chroot_local_user=yes

Chmod u-w/home/*

User blacklist establishment

Chroot_local_user=no

Chroot_list_enable=yes

Chroot_list_file=/etc/vsftpd/chroot_list

User Whitelist Creation

Chroot_local_user=yes

Chroot_list_enable=yes

Chroot_list_file=/etc/vsftpd/chroot_list

< restrict local User login >

Vim/etc/vsftpd/ftpusers User blacklist

Vim/etc/vsftpd/user_list User Temporary blacklist

User White list settings

Userlist_deny=no

/etc/vsftpd/user_list parameter settings, this file becomes the user whitelist, only the user who appears in the list can log in to FTP

<ftp settings for virtual users >

Create a virtual account identity

Vim/etc/vsftpd/userfile file name arbitrary

Ftpuser1

123

Ftpuser2

123

Ftpuser3

123

Db load-t-T hash-f/etc/vsftpd/userfile userfile.db

VIM/ETC/PAM.D/CKVSFTPD file name arbitrary

Account Required Pam_userdb.so Db=/etc/vsftpd/userfile

Auth Required Pam_userdb.so Db=/etc/vsftpd/userfile

Vim/etc/vsftpd/vsftpd.conf

Pam_service_name=ckvsftpd

Guest_enable=yes

Virtual Account Identity Designation

Guest_username=ftpuser

Chmod u-w/home/ftpuser

Virtual Account Home Directory designation

Vim/etc/vsftpd/vsftp.cong

local_root=/ftpuserhome/$USER

user_sub_token= $USER

Mkdir/ftpuserhome

Chgrp Ftpuser/ftpuserhome

Chmod G+s/ftpuserhome

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"Linux Rookie 2" Vsftpd