sudo apt-get install proftpd

sudo vim /etc/shells

/bin/false

sudo groupadd ftp
sudo useradd ftpuser1 -p pass -g ftp -d /home/ftp -s /bin/false

cd /home/ftp
sudo mkdir download
sudo mkdir upload
cd /home
sudo chmod 755 ftp
cd /home/ftp
sudo chmod 755 download
sudo chmod 777 upload

sudo vim /etc/proftpd/proftpd.conf
#
# /etc/proftpd/proftpd.conf -- This is a basic ProFTPD configuration file.
# To really apply changes reload proftpd after modifications.
#
# Includes DSO modules
Include /etc/proftpd/modules.conf
# Set off to disable IPv6 support which is annoying on IPv4 only boxes.
UseIPv6 off # 我们不需要IPv6，所以off
ServerName "xiaoyigeng's FTP Server" # 修改服务器名
ServerType standalone # 服务器运行模式，这里填standalone，也可以选
inetd
DeferWelcome on # 用户登陆时是否显示欢迎信息
MultilineRFC2228 on
DefaultServer on
ShowSymlinks on
TimeoutNoTransfer 600
TimeoutStalled 600 # 可以降到100
TimeoutIdle 1200 # 发呆超时
DisplayLogin welcome.msg # 如果上边DeferWelcom设置成on，则显示
welcome.msg中的内容
DisplayFirstChdir .message # 更改目录时显示的内容
ListOptions "-l"
DenyFilter \*.*/
# Use this to jail all users in their homes 
DefaultRoot /home/ftp # ftp用户被限制在这个目录中
# Users require a valid shell listed in /etc/shells to login.
# Use this directive to release that constrain.
# RequireValidShell off # 匿名用户要选on
# Port 21 is the standard FTP port.
Port 21 # 服务运行的端口
# In some cases you have to specify passive ports range to by-pass
# firewall limitations. Ephemeral ports can be used for that, but
# feel free to use a more narrow range.
# PassivePorts 49152 65534 # PASV模式下用到的端口
# If your host was NATted, this option is useful in order to
# allow passive tranfers to work. You have to use your public
# address and opening the passive ports used on your firewall as well.
# MasqueradeAddress 1.2.3.4
# To prevent DoS attacks, set the maximum number of child processes
# to 30. If you need to allow more than 30 concurrent connections
# at once, simply increase this value. Note that this ONLY works
# in standalone mode, in inetd mode you should use an inetd server
# that allows you to limit maximum number of processes per service
# (such as xinetd)
MaxInstances 30
# Set the user and group that the server normally runs at.
User nobody # 服务器运行在nobody用户下
Group nobody # 服务器运行在nobody组下
# Umask 022 is a good standard umask to prevent new files and dirs
# (second parm) from being group and world writable.
Umask 022 022 # 默认新建文件的权限
# Normally, we want files to be overwriteable.
AllowOverwrite on # 文件可以被覆盖
# Uncomment this if you are using NIS or LDAP to retrieve passwords:
# PersistentPasswd off
# Be warned: use of this directive impacts CPU average load!
# Uncomment this if you like to see progress and transfer rate with ftpwho
# in downloads. That is not needed for uploads rates.
#
# UseSendFile off
# Choose a SQL backend among MySQL or PostgreSQL.
# Both modules are loaded in default configuration, so you have to specify the backend 
# or comment out the unused module in /etc/proftpd/modules.conf.
# Use 'mysql' or 'postgres' as possible values.
#
#<IfModule mod_sql.c>
# SQLBackend mysql
#</IfModule>
TransferLog /var/log/proftpd/xferlog # 传送文件日志
SystemLog /var/log/proftpd/proftpd.log # 系统运行日志
<IfModule mod_tls.c>
TLSEngine off
</IfModule>
<IfModule mod_quota.c>
QuotaEngine on
</IfModule>
<IfModule mod_ratio.c>
Ratios on
</IfModule></p> <p># Delay engine reduces impact of the so-called Timing Attack described in
# <a href="http://security.lss.hr/index.php?page=details&ID=LSS-2004-10-02">http://security.lss.hr/index.php?page=details&ID=LSS-2004-10-02</a>
# It is on by default. 
<IfModule mod_delay.c>
DelayEngine on
</IfModule>
<IfModule mod_ctrls.c>
ControlsEngine on
ControlsMaxClients 2
ControlsLog /var/log/proftpd/controls.log
ControlsInterval 5
ControlsSocket /var/run/proftpd/proftpd.sock
</IfModule>
<IfModule mod_ctrls_admin.c>
AdminControlsEngine on
</IfModule>
# A basic anonymous configuration, no upload directories.
# <Anonymous ~ftp>
# User ftp
# Group nogroup
# # We want clients to be able to login with "anonymous" as well as "ftp"
# UserAlias anonymous ftp
# # Cosmetic changes, all files belongs to ftp user
# DirFakeUser on ftp
# DirFakeGroup on ftp
# 
# RequireValidShell off
# 
# # Limit the maximum number of anonymous logins
# MaxClients 10
# 
# # We want 'welcome.msg' displayed at login, and '.message' displayed
# # in each newly chdired directory.
# DisplayLogin welcome.msg
# DisplayFirstChdir .message
# 
# # Limit WRITE everywhere in the anonymous chroot
# <Directory *>
# <Limit WRITE>
# DenyAll
# </Limit>
# </Directory>
# 
# # Uncomment this if you're brave.
# # <Directory incoming>
# # # Umask 022 is a good standard umask to prevent new files and dirs
# # # (second parm) from being group and world writable.
# # Umask 022 022
# # <Limit READ WRITE>
# # DenyAll
# # </Limit>
# # <Limit STOR>
# # AllowAll
# # </Limit>
# # </Directory>
# 
# </Anonymous>
# Valid Logins # 以下部分为设置用户权限部分
<Limit LOGIN>
AllowUser ftpuser1
DenyAll
</Limit>
<Directory /home/ftp>
Umask 022 022
AllowOverwrite off
<Limit MKD STOR DELE XMKD RNRF RNTO RMD XRMD>
DenyAll
</Limit>
</Directory>
<Directory /home/ftp/download/>
Umask 022 022
AllowOverwrite off
<Limit MKD STOR DELE XMKD RNEF RNTO RMD XRMD>
DenyAll
</Limit>
</Directory>
<Directory /home/ftp/upload/>
Umask 022 022
AllowOverwrite on
<Limit READ RMD DELE>
DenyAll
</Limit>
<Limit STOR CWD MKD>
AllowAll
</Limit>
</Directory>

sudo /etc/init.d/proftpd start
sudo /etc/init.d/proftpd stop
sudo /etc/init.d/proftpd restart