一、下载软件：
在www.proftpd.org上获取最新稳定版本软件包：proftpd-1.3.1a.tar.gz

二、安装软件：
具体步骤如下：
#cd /opt/soft                                  #进入下载目录
#tar -zxvf proftpd-1.3.1a.tar.gz            #解开软件包
# ./configure --prefix=/usr/local/proftpd
# make
# make install

三、建立相关用户
1、建立用户组
#/usr/sbin/groupadd ftpdown
#/usr/sbin/useradd -g ftpdown -d /opt  -s /sbin/nologin ftpdown1
2、设置用户密码：
#passwd ftpdown1


四、proftpd配置文件解析
# This is a basic ProFTPD configuration file (rename it to
# 'proftpd.conf' for actual use.  It establishes a single server
# and a single anonymous login.  It assumes that you have a user/group
# "nobody" and "ftp" for normal operation and anon.

ServerName            "ProFTPD Default Installation"
ServerType            standalone
DefaultServer            on

# Port 21 is the standard FTP port.
Port        21         #端口设置

# Don't use IPv6 support by default.
UseIPv6                off

# Umask 022 is a good standard umask to prevent new dirs and files
# from being group and world writable.
Umask    022        #新文件的权限掩码

# 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 under which the server will run.
User                nobody
Group                nobody

# To cause every FTP user to be "jailed" (chrooted) into their home
# directory, uncomment this line.
DefaultRoot ~

# Normally, we want files to be overwriteable.
AllowOverwrite       on          #允许覆写
AllowStoreRestart          on          #允许断点续上传
AllowRetrieveRestart        on         #允许断点续下载
AllowForeignAddress       on          #要允许 FXP ，则为on


# Bar use of SITE CHMOD by default
<Limit ALL>
AllowAll
</Limit>