gentoo系统安装ProFTPdftp服务器

emerge -s proftpd # 查找看下有没有proftpd 

emerge -av proftpd # 加了a参数会征求下你的意见

结果我的报错了，可能其他人没有这种错误，

!!! The ebuild selected to satisfy "proftpd" has unmet requirements.

- net-ftp/proftpd-1.3.4c::gentoo USE="caps ipv6 mysql ncurses pcre ssl tcpd (uclibc) -acl -authfile -ban -case -clamav -copy -ctrls -deflate -diskuse -doc -dso -exec -ident -ifsession -ifversion -kerberos -ldap -memcache (-nls) -openssl (-pam) -postgres -qos -radius -ratio -readme -rewrite (-selinux) -sftp -shaper -sitemisc -softquota -sqlite -test -trace -vroot -xinetd" LINGUAS="-bg_BG -en_US -fr_FR -it_IT -ja_JP -ko_KR -ru_RU -zh_CN -zh_TW"

  The following REQUIRED_USE flag constraints are unsatisfied:

    ssl? ( openssl )

  The above constraints are a subset of the following complete expression:

    ban? ( ctrls ) sftp? ( openssl ) shaper? ( ctrls ) ssl? ( openssl )

打开/etc/make.conf, USE中加入openssl 标记，再运行emerge -av proftpd，ok

配置：在/etc/proftpd/有一个proftpd.conf.sample里面配置例子文件，复制到/etc/proftpd/proftpd.conf，对proftpd.conf文件进行相关配置，如下：

# This is a sample ProFTPD configuration file for Gentoo Linux (rename

# it to 'proftpd.conf' for actual use). It establishes a single server

# and a single anonymous login.

ServerName "ftp Server"

ServerType standalone

DefaultServer on

RequireValidShell off

#AuthPAM on

#AuthPAMConfig ftp

RequireValidShell off

# Listen on the standard FTP port 21.

Port 21

# New directories and files should not be group or world writable.

Umask 022

# 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.

MaxInstances 30

# The server will run under ftp/ftp.

User ftp

Group ftp

# Every FTP sessions is "jailed" into the user's home directory.

DefaultRoot ~

# Generally files are overwritable.

AllowOverwrite on

# Disallow the use of the SITE CHMOD command.

  DenyAll

SystemLog                       /var/log/proftpd.syslog

TransferLog                     /var/log/proftpd.transferlog

# A basic anonymous FTP account without an upload directory.

  User ftp

  Group ftp

  # Clients can login with the username "anonymous" and "ftp".

  UserAlias anonymous ftp

  # Limit the maximum number of parallel anonymous logins to 10.

  MaxClients 10

  # Prohibit the WRITE command for the anonymous users.

    DenyAll

    Order               deny,allow

    Allow               from all

配置好之后，可以使用/usr/sbin/proftpd -t 对配置文件进行检查，如果不正确，则会提示错误的信息

上述的配置没有对访问进行限制，任何人都可以访问，

检查配置正确之后，启动ftp服务器

/etc/init.d/proftpd start

显示： * Starting ProFTPD ...  表示启动成功

测试

打开浏览器或计算机（我的电脑xp）在地址栏输入ftp://主机IP/ 即可看到ftp根目录的信息，默认的根目录在

/home/ftp

创建只能访问ftp不能访问主机普通用户（ftp服务器默认可以通过普通的账号和密码来访问该帐户的家目录）

useradd asan -g groupname -d ftpdir(目录) -s /sbin/nologin  #后面的shell很重要，如果你整成为/bin/bash或其他存在的shell，则该账户就能够通过ssh连接上主机。

在配置文件中 中改为如下

    Order               deny,allow

    #Allow               from all

    DenyUser            !asan

再次访问ftp服务器时，就会要求用户名和密码，输入即可访问，如果出现文件无法下载的情况，请检查创建帐户的目录里面的文件是否属于该用户且可读。